Pore water quantification method and device

Abstract

The application relates to a pore water quantitative method and device. The method comprises the following steps: obtaining a first curve of a to-be-measured sample, determining weight proportions of various forms of pore water included in the to-be-measured sample according to the first curve and a kinetic reaction model, and determining the weights of the various forms of pore water according to the weight proportions of the various forms of pore water and the weight loss of the to-be-measured sample. Since the weight proportions of the various forms of pore water included in the to-be-measured sample are determined according to the first curve and the kinetic reaction model, the weights of the various forms of pore water can be determined according to the weight proportions of the various forms of pore water and the weight loss of the to-be-measured sample, and the weights of the various forms of pore water are not obtained by dividing the pore water forms according to the stationary points and the inflection points on the curve as the demarcation points. Therefore, the method can improve the accuracy of the weights of the various forms of pore water in the to-be-measured sample.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical fields of geotechnical engineering, environmental geotechnics, farmland hydrology, groundwater hydrology and porous medium materials, and particularly relates to a pore water quantification method and device. BACKGROUND

[0002] In nature, soil is generally in an unsaturated state, and is a multiphase system composed of a soil skeleton, pore water and pore gas. Pore water exists in various forms, such as free water, capillary water and bound water. Among them, the interaction between free water and the soil body is weak, and free water can be removed under the action of gravity. Therefore, the main capillary water and bound water exist in unsaturated soil. Different types of water have a direct impact on the overall engineering mechanical properties of the soil, such as strength, deformation and seepage characteristics. The content of bound water and capillary water is very important to the engineering properties of special soils such as expansive soil, loess and red clay. These special soils have high clay content, and the common environmental humidity fluctuation can also change the water content in the soil significantly, thereby causing a series of engineering disasters, such as wet expansion and dry shrinkage of expansive soil, and wet collapse of loess. Therefore, the identification and quantification of different forms of water in clay are particularly important.

[0003] In the traditional technology, the test method for the form of pore water in clay mainly adopts thermal analysis method. Thermal analysis method is a technology for accurately measuring physical quantity changes under the condition of program-controlled temperature change. Bound water is difficult to be removed in the heating process due to the strong attraction from soil particles, while capillary water is relatively easy to remove. Based on this, the information of different forms of pore water can be obtained by analyzing the thermal weight loss curve in the heating process.

[0004] At present, the use of thermal weight loss curve in thermal analysis method mainly focuses on directly using the stationary point and inflection point on the curve as the demarcation point to divide the form of pore water. However, the thermal desorption processes of bound water and capillary water are different. Therefore, the division of the form of pore water is not accurate, which further leads to the inaccuracy of the weight of different forms of pore water obtained. SUMMARY

[0005] Therefore, it is necessary to provide a pore water quantification method and device capable of improving the accuracy of the weight of different forms of pore water obtained.

[0006] In a first aspect, the present application provides a pore water quantification method. The method comprises:

[0007] obtaining a first curve of a to-be-tested sample, the first curve being a relationship curve between the percentage of residual weight and temperature obtained by thermogravimetric analysis of the to-be-tested sample based on a thermogravimetric analyzer;

[0008] determining the weight proportion of each form of pore water included in the to-be-tested sample according to the first curve and a kinetic reaction model.

[0009] The weight of each type of pore water is determined according to the weight proportion of each type of pore water and the weight loss of the sample to be measured.

[0010] In one embodiment, the weight proportion of each type of pore water included in the sample to be measured is determined according to the first curve and the kinetic reaction model, including:

[0011] The conversion rate corresponding to each residual weight percentage is obtained by normalizing each residual weight percentage on the first curve.

[0012] The weight proportion of each type of pore water included in the sample to be measured is determined according to the conversion rate corresponding to each residual weight percentage and the kinetic factor of the kinetic model corresponding to each sub-process.

[0013] In one embodiment, the weight proportion of each type of pore water included in the sample to be measured is determined according to the conversion rate corresponding to each residual weight percentage and the kinetic factor of the kinetic model corresponding to each sub-process, including:

[0014] The conversion rate of each sub-process is determined according to the kinetic factor of the kinetic model corresponding to each sub-process. The kinetic factor includes a mechanism function, an activation energy, and a pre-exponential factor.

[0015] The weight proportion of each type of pore water included in the sample to be measured is determined according to the conversion rate of each sub-process and the conversion rate corresponding to each residual weight percentage.

[0016] In one embodiment, the weight proportion of each type of pore water included in the sample to be measured is determined according to the conversion rate of each sub-process and the conversion rate corresponding to each residual weight percentage, including:

[0017] The conversion rate curve corresponding to each sub-process is obtained by differentiating the conversion rate of each sub-process with respect to temperature.

[0018] The weight proportion of each type of pore water included in the sample to be measured is determined according to the conversion rate curve corresponding to each sub-process and the conversion rate corresponding to each residual weight percentage.

[0019] In one embodiment, the weight proportion of each type of pore water included in the sample to be measured is determined according to the conversion rate curve corresponding to each sub-process and the conversion rate corresponding to each residual weight percentage, including:

[0020] The total conversion rate curve corresponding to the total process is obtained by differentiating the conversion rate corresponding to each residual weight percentage with respect to temperature.

[0021] According to the total conversion rate curve and the conversion rate curves corresponding to the sub-processes, the weight proportions of the various morphological pore waters included in the sample under test are determined.

[0022] In one embodiment, the weight of each morphological pore water is determined according to the weight proportion of the morphological pore water and the weight loss of the sample under test, including:

[0023] The product of the weight proportion of each morphological pore water and the weight loss is determined.

[0024] The product of the weight proportion of each morphological pore water and the weight loss is determined as the weight of the corresponding morphological pore water.

[0025] In a second aspect, the present application also provides a pore water quantification device. The device includes:

[0026] An acquisition module is configured to acquire a first curve of a sample under test, the first curve being a relationship curve between the percentage of residual weight and temperature obtained by thermogravimetric analysis of the sample under test by a thermogravimetric analyzer;

[0027] A first determination module is configured to determine the weight proportions of various morphological pore waters included in the sample under test according to the first curve and a kinetic reaction model.

[0028] A second determination module is configured to determine the weight of each morphological pore water according to the weight proportion of the morphological pore water and the weight loss of the sample under test.

[0029] In a third aspect, the present application provides a computer device including a memory and a processor, the memory storing a computer program, and the processor implementing the steps of the above method when executing the computer program.

[0030] In a fourth aspect, the present application provides a computer readable storage medium having a computer program stored thereon, the computer program being executed by a processor to implement the steps of the above method.

[0031] In a fifth aspect, the present application provides a computer program product including a computer program, the computer program being executed by a processor to implement the steps of the above method.

[0032] The pore water quantitative method and device, first, a first curve of a sample to be measured is obtained, then, according to the first curve and a kinetic reaction model, weight proportions of each pore water form included in the sample to be measured are determined, and finally, according to the weight proportions of each pore water form and a weight loss of the sample to be measured, weights of each pore water form are determined. Since the weight proportions of each pore water form included in the sample to be measured are determined according to the first curve and the kinetic reaction model, and then the weights of each pore water form are determined according to the weight proportions of each pore water form and the weight loss of the sample to be measured, it is not necessary to divide the pore water forms according to the stationary points and the inflection points on the curve as the demarcation points to obtain the weights of each pore water form. Therefore, the method can improve the accuracy of the weights of each pore water form in the sample to be measured. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 A flowchart of a pore water quantitative method provided by an embodiment of the present application;

[0034] Figure 2 An example diagram of a first curve measured by a thermogravimetric analyzer;

[0035] Figure 3 A flowchart of a weight proportion determination method of each pore water form provided by an embodiment of the present application;

[0036] Figure 4 A flowchart of a weight proportion determination method of each pore water form provided by an embodiment of the present application;

[0037] Figure 5 A flowchart of a weight proportion determination method of each pore water form provided by an embodiment of the present application;

[0038] Figure 6 An example diagram of a conversion rate curve corresponding to each sub-process;

[0039] Figure 7 An example diagram of a conversion rate curve corresponding to each sub-process;

[0040] Figure 8 A flowchart of a weight proportion determination method of each pore water form provided by an embodiment of the present application;

[0041] Figure 9 A flowchart of a weight determination method of each pore water form provided by an embodiment of the present application;

[0042] Figure 10 A structural block diagram of a pore water quantitative device provided by an embodiment of the present application;

[0043] Figure 11An internal structure diagram of a computer device in an embodiment. DETAILED DESCRIPTION

[0044] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application is further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0045] The traditional test methods of pore water forms in clay include volumetric flask method, isothermal adsorption method, thermal analysis method, etc. The volumetric flask method has strict requirements for test operation and is prone to large errors. The isothermal adsorption method usually uses the inflection point of the isothermal adsorption curve to determine the bound water content of the soil and determine the boundary line for the classification of bound water types. The inflection point of the curve is generally determined by experience and is easily affected by test conditions, and it is difficult to show the physical differences of different types of water. The thermal analysis method is a technique for accurately measuring physical quantity changes under the condition of program-controlled temperature changes. Thermogravimetric analysis (TGA) is to take mass as the measurement object. The bound water is difficult to be removed in the heating process due to the strong attraction from the soil particles, while the capillary water is relatively easy to remove. Based on this, the information of different forms of pore water can be obtained by analyzing the weight loss curve in the heating process. The thermal analysis method has the advantages of simple operation, small amount of sample, short test time and high precision. However, the current use of thermal analysis curves mainly focuses on using the stationary point and inflection point on the curve as the dividing point to divide the pore water forms. Through thermogravimetric analysis, the thermogravimetric curve of the water-containing sample can be obtained, i.e. the relationship between the remaining mass and the temperature. The traditional method divides different types of pore water by the inflection point or stationary point on the curve, for example, if an inflection point exists on the curve and the corresponding temperature is T, then the water removed before temperature T and the water removed after temperature T are considered as two different types of water. In fact, the actual thermal desorption process of different types of water is overlapping, and a single temperature point cannot be used as the dividing line for different types of water. In addition, different test heating rates will cause the stationary point and inflection point of the thermogravimetric curve to move, resulting in strict requirements for the test conditions and narrow applicability of this method. The method provided in the present application combines the thermal analysis curve with the water holding mechanism of clay for in-depth analysis to more accurately divide the pore water forms, and finally obtain the accurate weight of different forms of pore water.

[0046] Figure 1 A flowchart of a pore water quantitative method provided by an embodiment of the present application is shown in the figure. The method is applied to a computer device and includes the following steps:

[0047] S101, obtain a first curve of the sample to be tested, the first curve being a relationship curve between the remaining weight percentage and the temperature obtained by thermogravimetric analysis of the sample to be tested based on a thermogravimetric analyzer.

[0048] The sample to be measured can be clay. The thermogravimetric analyzer is a testing instrument for recording the relationship between sample weight and temperature.

[0049] In the embodiments of the present application, the sample to be measured can be placed in a crucible and covered with a small cover with holes, and then the crucible is placed in a thermogravimetric analyzer. The gas is set in the thermogravimetric analyzer, and the gas flow, the heating rate and the temperature range are set. The relationship curve between the residual weight percentage of the sample to be measured and the temperature can be obtained, which is the first curve of the sample to be measured. Since nitrogen gas does not react with the sample to be measured, it will not affect the test results. The gas set in the thermogravimetric analyzer is preferably nitrogen. For example, about 10 mg of the sample to be measured is placed in a 70 μL crucible, covered with a small cover with holes, and placed in a thermogravimetric analyzer. The gas atmosphere is set to nitrogen, the gas flow is 50 mL / min, the heating rate is 9 ℃ / min, and the temperature range is 30-300 ℃. The first curve of the sample to be measured is obtained.

[0050] Reference Figure 2 , Figure 2 The figure is an example of the first curve measured by the thermogravimetric analyzer. The two tested kaolin samples in the figure are balanced at a humidity of 75.5% and 97.6%, respectively. The balance means that the weight of the two tested kaolin samples does not change at this humidity.

[0051] S102, according to the first curve and the kinetic reaction model, determining the weight proportion of each form of pore water included in the sample to be measured.

[0052] The kinetic reaction model refers to a mathematical model describing the relationship between reaction rate, temperature and reactant content. In the embodiments of the present application, the thermal desorption process of different substances can be described, and the kinetic three factors of the analyzed substance can be provided: activation energy, mechanism function and pre-exponential factor. If the kinetic model used is appropriate, the change of environmental conditions such as heating rate will not have too much influence on the kinetic three factors, so that the analysis result will hardly be affected by the movement of the stationary point or inflection point on the thermogravimetric curve. The various forms of pore water can include: strongly bound water, weakly bound water and capillary water.

[0053] In the embodiments of the present application, the computer device can obtain the conversion rate corresponding to each residual weight percentage according to the first curve, determine the conversion rate of each strongly bound water, weakly bound water and capillary water according to the kinetic factors of the kinetic model corresponding to the strongly bound water, weakly bound water and capillary water, and determine the weight proportion of each form of pore water included in the sample to be measured according to the conversion rate corresponding to each residual weight percentage and the conversion rate of the strongly bound water, weakly bound water and capillary water.

[0054] S103, determine the weight of each type of pore water according to the weight proportion of each type of pore water and the weight loss of the sample to be measured.

[0055] In the embodiments of the present application, the weight of each type of pore water can be obtained by multiplying the weight proportion of each type of pore water and the weight loss of the sample to be measured, or the weight of each type of pore water can be obtained by multiplying the product obtained by multiplying the weight proportion of each type of pore water and the weight loss of the sample to be measured by a preset proportionality coefficient.

[0056] In the above pore water quantification method, first, the first curve of the sample to be measured is obtained, then the weight proportion of each type of pore water included in the sample to be measured is determined according to the first curve and the kinetic reaction model, and finally the weight of each type of pore water is determined according to the weight proportion of each type of pore water and the weight loss of the sample to be measured. Since the weight proportion of each type of pore water included in the sample to be measured is determined by the first curve and the kinetic reaction model in the present application, the weight of each type of pore water can be determined according to the weight proportion of each type of pore water and the weight loss of the sample to be measured, without needing to divide the pore water types according to the stationary points and inflection points on the curve as the dividing points to obtain the weight of each type of pore water. Therefore, the present method can improve the accuracy of the weight of each type of pore water in the sample to be measured.

[0057] Figure 3 One of the flowcharts of the weight proportion determination method of each type of pore water provided in the embodiments of the present application, the present embodiment relates to one possible implementation manner of how to determine the weight proportion of each type of pore water included in the sample to be measured according to the first curve and the kinetic reaction model. On the basis of the above embodiments, S103 includes:

[0058] S301, normalize each residual weight percentage on the first curve to obtain the conversion rate corresponding to each residual weight percentage.

[0059] The normalization processing is an operation of changing a numerical value to a decimal number between 0 and 1.

[0060] In the embodiments of the present application, the residual weight percentage obtained after the thermogravimetric analysis of the sample to be measured based on the thermogravimetric analyzer is normalized, and the conversion rate corresponding to each residual weight percentage is obtained after normalization.

[0061] S302, determine the weight proportion of each type of pore water included in the sample to be measured according to the conversion rate corresponding to each residual weight percentage and the kinetic factor of the kinetic model corresponding to each sub-process.

[0062] The various forms of pore water can include strongly bound water, weakly bound water, and capillary water. Sub-process 1 is a thermal desorption process of strongly bound water in the thermal gravimetric analysis process, sub-process 2 is a thermal desorption process of weakly bound water in the thermal gravimetric analysis process, and sub-process 3 is a thermal desorption process of capillary water in the thermal gravimetric analysis process. The kinetic factor of the kinetic model corresponding to sub-process 1 is the kinetic factor of the kinetic model corresponding to strongly bound water, the kinetic factor of the kinetic model corresponding to sub-process 2 is the kinetic factor of the kinetic model corresponding to weakly bound water, and the kinetic factor of the kinetic model corresponding to sub-process 3 is the kinetic factor of the kinetic model corresponding to capillary water.

[0063] In the embodiments of the present application, the computer device can determine the weight percentage of strongly bound water included in the sample to be measured according to the conversion rate corresponding to each residual weight percentage and the kinetic factor of the kinetic model corresponding to sub-process 1, determine the weight percentage of weakly bound water included in the sample to be measured according to the conversion rate corresponding to each residual weight percentage and the kinetic factor of the kinetic model corresponding to sub-process 2, and determine the weight percentage of capillary water included in the sample to be measured according to the conversion rate corresponding to each residual weight percentage and the kinetic factor of the kinetic model corresponding to sub-process 3.

[0064] The weight percentage determination method of various forms of pore water provided in the embodiments of the present application first normalizes each residual weight percentage on the first curve to obtain a conversion rate corresponding to each residual weight percentage, and then determines the weight percentage of each form of pore water included in the sample to be measured according to the conversion rate corresponding to each residual weight percentage and the kinetic factor of the kinetic model corresponding to each sub-process. Therefore, the weight percentage of each form of pore water can be accurately obtained, and the weight accuracy of pore water of different forms can be improved.

[0065] Figure 4 For the flowchart of the weight percentage determination method of various forms of pore water provided in the embodiments of the present application, the present embodiment relates to a possible implementation manner of how to determine the weight percentage of each form of pore water included in the sample to be measured according to the conversion rate corresponding to each residual weight percentage and the kinetic factor of the kinetic model corresponding to each sub-process. On the basis of the above-mentioned embodiments, S302 includes:

[0066] S401, determining the conversion rate of each sub-process according to the kinetic factor of the kinetic model corresponding to each sub-process. The kinetic factor includes a mechanism function, an activation energy, and a pre-exponential factor.

[0067] The kinetic factors include mechanism functions, activation energies and pre-exponential factors. The kinetic factors of the kinetic models corresponding to the sub-processes can include mechanism functions, activation energies and pre-exponential factors of strongly bound water, mechanism functions, activation energies and pre-exponential factors of weakly bound water, and mechanism functions, activation energies and pre-exponential factors of capillary water.

[0068] In the embodiment of the application, the computer device can obtain the conversion rates of the sub-processes corresponding to the strongly bound water, the weakly bound water and the capillary water according to the kinetic factors of the kinetic models corresponding to the strongly bound water, the weakly bound water and the capillary water.

[0069] Specifically, the mechanism functions of the strongly bound water, the weakly bound water and the capillary water are as follows:

[0070] f1(a1) = (1-a1) 2

[0071] f2(a2) = 1-a2

[0072]

[0073] In the above formula, f1(a1) is the mechanism function of the strongly bound water, f2(a2) is the mechanism function of the weakly bound water, f(a3) is the mechanism function of the capillary water, a1 is the conversion rate of the strongly bound water, a2 is the conversion rate of the weakly bound water, and a3 is the conversion rate of the capillary water.

[0074] The conversion rates of the strongly bound water, the weakly bound water and the capillary water can be calculated by the following formula:

[0075]

[0076] In the above formula, the subscripts 1 to 3 of the subscript i respectively correspond to the strongly bound water, the weakly bound water and the capillary water, a i is the conversion rate of a certain sub-process, E ai is the activation energy of a certain sub-process, A i is the pre-exponential factor of a certain sub-process, and f i (a i ) is the mechanism function of a certain sub-process.

[0077] Referring to the following Table 1, the kinetic parameters of the sample under different humidities shown in Table 1 are as follows:

[0078] Table 1

[0079]

[0080] S402, determining the weight proportions of each form of pore water included in the sample to be measured according to the conversion rates of each sub-process and the conversion rates corresponding to each residual weight percentage.

[0081] In the embodiments of the present application, the computer device can obtain the conversion rate curves of the strong bound water, the weak bound water and the capillary water according to the conversion rates of the strong bound water, the weak bound water and the capillary water, and can determine the weight proportions of the strong bound water, the weak bound water and the capillary water included in the sample to be measured according to the conversion rates corresponding to the respective residual weight percentages.

[0082] The method for determining the weight proportions of the various forms of pore water provided in the embodiments of the present application first determines the conversion rates of the respective sub-processes according to the kinetic factors of the kinetic models corresponding to the respective sub-processes, and then determines the weight proportions of the respective forms of pore water included in the sample to be measured according to the conversion rates of the respective sub-processes and the conversion rates corresponding to the respective residual weight percentages. Therefore, the accurate weight proportions of the respective forms of pore water can be obtained, and the weight accuracy of the pore water of different forms is improved.

[0083] Figure 5 FIG. 3 is a flowchart of a method for determining the weight proportions of the various forms of pore water provided in the embodiments of the present application, and the present embodiment relates to a possible implementation manner for determining the weight proportions of the various forms of pore water included in the sample to be measured according to the conversion rates of the respective sub-processes and the conversion rates corresponding to the respective residual weight percentages. On the basis of the above-mentioned embodiments, S402 includes the following steps.

[0084] S501, obtaining the conversion rate curves corresponding to the respective sub-processes by deriving the conversion rates of the respective sub-processes with respect to temperature.

[0085] In the embodiments of the present application, the computer device derives the conversion rates of the strong bound water, the weak bound water and the capillary water with respect to temperature respectively, and obtains the conversion rate curves of the strong bound water, the weak bound water and the capillary water with respect to temperature, i.e., the conversion rate curves corresponding to the respective sub-processes. For reference Figure 6 and Figure 7 , Figure 6 and Figure 7 FIGS. 5 and 6 are example diagrams of the conversion rate curves corresponding to the respective sub-processes, in which Figure 6 The kaolin sample is equilibrated at a humidity of 75.5%. Figure 7 The kaolin sample is equilibrated at a humidity of 97.6%.

[0086] S502, determining the weight proportions of the respective forms of pore water included in the sample to be measured according to the conversion rate curves corresponding to the respective sub-processes and the conversion rates corresponding to the respective residual weight percentages.

[0087] In the embodiments of the present application, the computer device can determine the weight proportions of the strong bound water, the weak bound water and the capillary water included in the sample to be measured according to the conversion rate curves corresponding to the strong bound water, the weak bound water and the capillary water and the conversion rates corresponding to the residual weight percentages.

[0088] The weight proportion determination method of various forms of pore water provided in the embodiments of the present application first derives the conversion rate of each sub-process with respect to temperature to obtain the conversion rate curve corresponding to each sub-process, and then determines the weight proportion of each form of pore water included in the to-be-tested sample according to the conversion rate curve corresponding to each sub-process and the conversion rate corresponding to each residual weight percentage. Therefore, the weight proportions of each form of pore water can be accurately obtained, and the weight accuracy of pore water of different forms is improved.

[0089] Figure 8 As a fourth flowchart of the weight proportion determination method of various forms of pore water provided in the embodiments of the present application, the present embodiment relates to a possible implementation manner of how to determine the weight proportion of each form of pore water included in the to-be-tested sample according to the conversion rate curve corresponding to each sub-process and the conversion rate corresponding to each residual weight percentage. On the basis of the above-mentioned embodiments, S502 includes the following steps.

[0090] S801, derive the conversion rate corresponding to each residual weight percentage with respect to temperature to obtain the total conversion rate curve corresponding to the total process.

[0091] In the embodiments of the present application, the conversion rate corresponding to each residual weight percentage with respect to temperature can be derived to obtain the total conversion rate curve corresponding to the total process. The total conversion rate curve is a relationship curve between the conversion rate corresponding to the residual weight percentage and temperature.

[0092] S802, determine the weight proportion of each form of pore water included in the to-be-tested sample according to the total conversion rate curve and the conversion rate curve corresponding to each sub-process.

[0093] In the embodiments of the present application, the weight proportions of strong bound water, weak bound water and capillary water included in the to-be-tested sample can be calculated according to the total conversion rate curve and the conversion rate curves corresponding to the strong bound water, weak bound water and capillary water. Specifically, the weight proportion of each form of pore water included in the to-be-tested sample can be calculated by the following formula:

[0094]

[0095]

[0096] wherein, represents the total conversion rate curve, represents the conversion rate curves of the strong bound water, weak bound water and capillary water, c i represents the weight proportion of each form of pore water included in the to-be-tested sample.

[0097] The weight proportion determination method of each form of pore water provided in the embodiments of the present application first derives the total conversion rate curve corresponding to the total process by deriving the conversion rate corresponding to each residual weight percentage with respect to temperature, and then determines the weight proportion of each form of pore water included in the to-be-tested sample according to the total conversion rate curve and the conversion rate curve corresponding to each sub-process. Therefore, the weight proportions of each form of pore water can be accurately obtained, and the weight accuracy of pore water of different forms is improved.

[0098] Figure 9 The flowchart of the weight determination method of each form of pore water provided in the embodiments of the present application, and the present embodiment relates to a possible implementation manner of how to determine the weight of each form of pore water according to the weight proportion of each form of pore water and the weight loss weight of the to-be-tested sample. On the basis of the above-mentioned embodiments, S103 includes the following steps.

[0099] S901, determining the product result of the weight proportion of each form of pore water and the weight loss weight.

[0100] The weight proportion of each form of pore water can include strong bound water, weak bound water and capillary water. The weight loss weight can be the weight of the total pore water of the to-be-tested sample.

[0101] In the embodiments of the present application, the weight proportion of each form of pore water obtained in step S502 is multiplied by the weight loss weight of the to-be-tested sample, and the product result after multiplication is obtained.

[0102] S902, taking the product result of the weight proportion of each form of pore water and the weight loss weight as the weight of the corresponding form of pore water.

[0103] In the embodiments of the present application, the weight proportion of each form of pore water is multiplied by the weight loss weight of the to-be-tested sample, and the product result after multiplication can be the weight of each form of pore water. Specifically, the weight of each form of pore water can be calculated according to the following formula:

[0104] w i = w x c i

[0105] wherein w is the weight loss weight, c i is the weight proportion of each form of pore water, and w i is the weight of each form of pore water.

[0106] Referring to Table 2 shown below, the strong bound water, weak bound water and capillary water contained in the sample under different humidity are as follows:

[0107] Table 2

[0108]

[0109] The weight determination method of the various forms of pore water provided by the embodiments of the present application determines the product of the weight proportion of each form of pore water and the weight loss, and takes the product of the weight proportion of each form of pore water and the weight loss as the weight of the corresponding form of pore water. The weight of the pore water of different forms in the sample to be measured obtained by this method is more accurate.

[0110] It should be understood that, although each step in the flowchart involved in each of the above embodiments is displayed in sequence according to the arrow, these steps are not necessarily executed in the order indicated by the arrow. Unless otherwise specified herein, the execution of these steps is not strictly limited in sequence, and these steps can be executed in other orders. Moreover, at least part of the steps in the flowchart involved in each of the above embodiments can include multiple steps or stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily sequential, but can be executed alternately or alternately with at least part of other steps or steps or stages in other steps.

[0111] Based on the same inventive concept, the embodiments of the present application also provide a pore water quantification device for implementing the pore water quantification method described above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme described in the above method, so the specific limitations in one or more pore water quantification device embodiments provided below can refer to the limitations of the pore water quantification method described above, and will not be repeated here.

[0112] In one embodiment, as shown in Figure 10 A pore water quantification device 1000 is provided, comprising: an acquisition module 1001, a first determination module 1002, and a second determination module 1003, wherein:

[0113] The acquisition module 1001 is configured to acquire a first curve of the sample to be measured, the first curve being a relationship curve between the residual weight percentage and the temperature obtained by performing thermogravimetric analysis on the sample to be measured based on a thermogravimetric analyzer.

[0114] The first determination module 1002 is configured to determine the weight proportion of each form of pore water included in the sample to be measured according to the first curve and a kinetic reaction model.

[0115] The second determination module 1003 is configured to determine the weight of each form of pore water according to the weight proportion of each form of pore water and the weight loss of the sample to be measured.

[0116] In one embodiment, the first determination module 1002 comprises:

[0117] The first determining sub-module is configured to normalize each residual weight percentage on the first curve to obtain a conversion rate corresponding to each residual weight percentage.

[0118] The second determining sub-module is configured to determine a weight proportion of each morphological pore water included in the sample to be measured according to the conversion rate corresponding to each residual weight percentage and a kinetic factor of the kinetic model corresponding to each sub-process.

[0119] In an embodiment, the second determining sub-module includes:

[0120] The first determining unit is configured to determine a conversion rate of each sub-process according to a kinetic factor of the kinetic model corresponding to each sub-process, wherein the kinetic factor includes a mechanism function, an activation energy, and a pre-exponential factor.

[0121] The second determining unit is configured to determine a weight proportion of each morphological pore water included in the sample to be measured according to the conversion rate of each sub-process and the conversion rate corresponding to each residual weight percentage.

[0122] In an embodiment, the second determining unit includes:

[0123] The first determining sub-unit is configured to derive a conversion rate curve corresponding to each sub-process by deriving the conversion rate of each sub-process with respect to temperature.

[0124] The second determining sub-unit is configured to determine a weight proportion of each morphological pore water included in the sample to be measured according to the conversion rate curve corresponding to each sub-process and the conversion rate corresponding to each residual weight percentage.

[0125] In an embodiment, the second determining sub-unit is specifically configured to derive a total conversion rate curve corresponding to a total process by deriving the conversion rate corresponding to each residual weight percentage with respect to temperature; and determine the weight proportion of each morphological pore water included in the sample to be measured according to the total conversion rate curve and the conversion rate curve corresponding to each sub-process.

[0126] In an embodiment, the second determining module 1003 includes:

[0127] The acquisition sub-module is configured to acquire a first curve of the sample to be measured, wherein the first curve is a relationship curve between a residual weight percentage and temperature obtained by performing thermogravimetric analysis on the sample to be measured by using a thermogravimetric analyzer.

[0128] The third determining sub-module is configured to determine a weight proportion of each morphological pore water included in the sample to be measured according to the first curve and a kinetic reaction model; and the sub-process is a thermal desorption process of the corresponding morphological pore water in the thermogravimetric analysis process.

[0129] The third determining sub-module is configured to determine the weight of each morphological pore water according to the weight proportion of each morphological pore water and a weight loss of the sample to be measured.

[0130] Each module in the above pore water quantification device can be implemented wholly or partially by software, hardware, and combinations thereof. The above modules can be embedded in or independent of a processor in a computer device in hardware form, or can be stored in a memory in a computer device in software form, so as to be called and executed by the processor to perform the operations corresponding to the above modules.

[0131] In an embodiment, a computer device is provided, which can be a server, and an internal structure diagram thereof can be as shown in Figure 11 The computer device includes a processor, a memory, and a network interface connected through a system bus. The processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for running the operating system and the computer program in the non-volatile storage medium. The database of the computer device is configured to store data. The network interface of the computer device is configured to communicate with an external terminal through a network connection. The computer program is executed by the processor to implement a pore water quantification method.

[0132] Those skilled in the art can understand that Figure 11 The structure shown in the above embodiment is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the computer device to which the scheme of the present application is applied. Specifically, the computer device can include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0133] In an embodiment, a computer device is provided, which includes a memory and a processor, and the memory stores a computer program. The processor executes the computer program to implement the following steps:

[0134] obtaining a first curve of the sample to be measured, the first curve being a relationship curve between the residual weight percentage and the temperature obtained by performing thermogravimetric analysis on the sample to be measured based on a thermogravimetric analyzer;

[0135] determining the weight proportion of each type of pore water included in the sample to be measured according to the first curve and a kinetic reaction model;

[0136] determining the weight of each type of pore water according to the weight proportion of each type of pore water and the weight loss of the sample to be measured.

[0137] In an embodiment, the processor executes the computer program to further implement the following steps:

[0138] normalizing each residual weight percentage on the first curve to obtain a conversion rate corresponding to each residual weight percentage;

[0139] determining the weight percentage of each of the morphological pore water included in the sample to be tested according to the conversion rate corresponding to each of the remaining weight percentages and the kinetic factor of the kinetic model corresponding to each of the sub-processes.

[0140] In one embodiment, the processor, when executing the computer program, further implements the following steps:

[0141] determining the conversion rate of each of the sub-processes according to the kinetic factor of the kinetic model corresponding to each of the sub-processes; the kinetic factor includes a mechanism function, an activation energy and a pre-exponential factor;

[0142] determining the weight percentage of each of the morphological pore water included in the sample to be tested according to the conversion rate of each of the sub-processes and the conversion rate corresponding to each of the remaining weight percentages.

[0143] In one embodiment, the processor, when executing the computer program, further implements the following steps:

[0144] deriving the conversion rate curve corresponding to each of the sub-processes by differentiating the conversion rate of each of the sub-processes with respect to temperature;

[0145] determining the weight percentage of each of the morphological pore water included in the sample to be tested according to the conversion rate curve corresponding to each of the sub-processes and the conversion rate corresponding to each of the remaining weight percentages.

[0146] In one embodiment, the processor, when executing the computer program, further implements the following steps:

[0147] deriving the total conversion rate curve corresponding to the total process by differentiating the conversion rate corresponding to each of the remaining weight percentages with respect to temperature;

[0148] determining the weight percentage of each of the morphological pore water included in the sample to be tested according to the total conversion rate curve and the conversion rate curve corresponding to each of the sub-processes.

[0149] In one embodiment, the processor, when executing the computer program, further implements the following steps:

[0150] determining the product of the weight percentage of each of the morphological pore water and the weight of the weight loss;

[0151] taking the product of the weight percentage of each of the morphological pore water and the weight of the weight loss as the weight of the corresponding morphological pore water.

[0152] In one embodiment, a computer readable storage medium is provided, and the computer readable storage medium has stored thereon a computer program, and the computer program, when executed by a processor, implements the following steps:

[0153] obtaining a first curve of a sample to be tested, the first curve being a curve of the relationship between the remaining weight percentage and the temperature obtained by performing thermogravimetric analysis on the sample to be tested based on a thermogravimetric analyzer;

[0154] determining the weight proportion of each of the morphological pore water included in the sample to be measured according to the first curve and the kinetic reaction model;

[0155] determining the weight of each of the morphological pore water according to the weight proportion of each of the morphological pore water and the weight loss of the sample to be measured.

[0156] In one embodiment, the computer program, when executed by the processor, further implements the following steps:

[0157] normalizing each of the residual weight percentages on the first curve to obtain a conversion rate corresponding to each of the residual weight percentages;

[0158] determining the weight proportion of each of the morphological pore water included in the sample to be measured according to the conversion rate corresponding to each of the residual weight percentages and the kinetic factor of the kinetic model corresponding to each of the sub-processes.

[0159] In one embodiment, the computer program, when executed by the processor, further implements the following steps:

[0160] deriving the conversion rate of each of the sub-processes according to the kinetic factor of the kinetic model corresponding to each of the sub-processes; the kinetic factor includes a mechanism function, an activation energy and a pre-exponential factor;

[0161] determining the weight proportion of each of the morphological pore water included in the sample to be measured according to the conversion rate of each of the sub-processes and the conversion rate corresponding to each of the residual weight percentages.

[0162] In one embodiment, the computer program, when executed by the processor, further implements the following steps:

[0163] deriving a conversion rate curve corresponding to each of the sub-processes by deriving the conversion rate of each of the sub-processes with respect to temperature;

[0164] determining the weight proportion of each of the morphological pore water included in the sample to be measured according to the conversion rate curve corresponding to each of the sub-processes and the conversion rate corresponding to each of the residual weight percentages.

[0165] In one embodiment, the computer program, when executed by the processor, further implements the following steps:

[0166] deriving a total conversion rate curve corresponding to the total process by deriving the conversion rate corresponding to each of the residual weight percentages with respect to temperature;

[0167] determining the weight proportion of each of the morphological pore water included in the sample to be measured according to the total conversion rate curve and the conversion rate curve corresponding to each of the sub-processes.

[0168] In one embodiment, the computer program, when executed by the processor, further implements the following steps:

[0169] The product of the weight percentage of each type of pore water and the weight loss is determined.

[0170] The product of the weight percentage of each type of pore water and the weight loss is determined.

[0171] In one embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, implements the following steps:

[0172] A first curve of the sample to be measured is obtained, the first curve being a curve of the relationship between the percentage of residual weight and temperature obtained after thermogravimetric analysis of the sample to be measured by a thermogravimetric analyzer;

[0173] The weight percentage of each type of pore water included in the sample to be measured is determined according to the first curve and the kinetic reaction model.

[0174] The weight of each type of pore water is determined according to the weight percentage of each type of pore water and the weight loss of the sample to be measured.

[0175] In one embodiment, the computer program, when executed by a processor, further implements the following steps:

[0176] Each percentage of residual weight on the first curve is normalized to obtain a conversion rate corresponding to each percentage of residual weight.

[0177] The weight percentage of each type of pore water included in the sample to be measured is determined according to the conversion rate corresponding to each percentage of residual weight and the kinetic factor of the kinetic model corresponding to each sub-process.

[0178] In one embodiment, the computer program, when executed by a processor, further implements the following steps:

[0179] The conversion rate of each sub-process is determined according to the kinetic factor of the kinetic model corresponding to each sub-process; the kinetic factor includes a mechanism function, an activation energy, and a pre-exponential factor.

[0180] The weight percentage of each type of pore water included in the sample to be measured is determined according to the conversion rate of each sub-process and the conversion rate corresponding to each percentage of residual weight.

[0181] In one embodiment, the computer program, when executed by a processor, further implements the following steps:

[0182] The conversion rate of each sub-process is determined according to the conversion rate of each sub-process and the conversion rate corresponding to each percentage of residual weight.

[0183] The weight percentage of each type of pore water included in the sample to be measured is determined according to the conversion rate corresponding to each percentage of residual weight and the conversion rate corresponding to each sub-process.

[0184] In one embodiment, the computer program, which is executed by the processor, further implements the following steps:

[0185] Derivatives of the conversion rate with respect to temperature for each of the remaining weight percentages are obtained to obtain a total conversion rate curve corresponding to the total process;

[0186] According to the total conversion rate curve and the conversion rate curves corresponding to each of the sub-processes, the weight proportions of each of the morphological pore waters included in the sample to be measured are determined.

[0187] In one embodiment, the computer program, which is executed by the processor, further implements the following steps:

[0188] The product of the weight proportion of each of the morphological pore waters and the weight loss is determined.

[0189] The product of the weight proportion of each of the morphological pore waters and the weight loss is determined.

[0190] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when the computer program is executed, the processes of the above-mentioned embodiments of the methods can be included. Any reference to memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (Read-Only Memory, ROM), magnetic tape, floppy disk, flash memory, optical storage, high-density embedded non-volatile memory, resistive memory (ReRAM), magnetoresistive random access memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric memory (Ferroelectric Random Access Memory, FRAM), phase change memory (Phase Change Memory, PCM), graphene memory, etc. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, etc. As an illustration but not limitation, RAM can be in various forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), etc. The database involved in the embodiments provided in the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, etc., without being limited thereto. The processor involved in the embodiments provided in the present application can be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., without being limited thereto.

[0191] Any combination of the technical features of the above embodiments can be made. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0192] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A method for quantifying pore water, characterized by, The method comprises: obtaining a first curve of a sample to be tested, the first curve being a curve between residual weight percentage and temperature obtained after thermogravimetric analysis of the sample to be tested by a thermogravimetric analyzer; determining weight proportions of each of various forms of pore water included in the sample to be tested according to the first curve and a kinetic reaction model; determining the weight of each of the various forms of pore water according to the weight proportions of each of the various forms of pore water and a weight loss of the sample to be tested. The determining of the weight proportions of each of the various forms of pore water included in the sample to be tested according to the first curve and the kinetic reaction model comprises: normalizing each of the residual weight percentages on the first curve to obtain conversion rates corresponding to each of the residual weight percentages; determining the conversion rates of each of the sub-processes according to kinetic factors of the kinetic reaction model corresponding to each of the sub-processes; the kinetic factors include a mechanism function, an activation energy and a pre-exponential factor; determining the weight proportions of each of the various forms of pore water included in the sample to be tested according to the conversion rates of each of the sub-processes and the conversion rates corresponding to each of the residual weight percentages. The various forms of pore water include strongly bound water, weakly bound water and capillary water; and the various sub-processes include a thermal desorption process of the strongly bound water in the thermogravimetric analysis, a thermal desorption process of the weakly bound water in the thermogravimetric analysis and a thermal desorption process of the capillary water in the thermogravimetric analysis.

2. The method of claim 1, wherein, The determining of the weight proportions of each of the various forms of pore water included in the sample to be tested according to the conversion rates of each of the sub-processes and the conversion rates corresponding to each of the residual weight percentages comprises: deriving the conversion rate curves corresponding to each of the sub-processes by deriving the conversion rates of each of the sub-processes with respect to temperature; determining the weight proportions of each of the various forms of pore water included in the sample to be tested according to the conversion rate curves corresponding to each of the sub-processes and the conversion rates corresponding to each of the residual weight percentages.

3. The method of claim 2, wherein, The determining of the weight proportions of each of the various forms of pore water included in the sample to be tested according to the conversion rates of each of the sub-processes and the conversion rates corresponding to each of the residual weight percentages comprises: deriving a total conversion rate curve corresponding to a total process by deriving the conversion rates corresponding to each of the residual weight percentages with respect to temperature; determining the weight proportions of each of the various forms of pore water included in the sample to be tested according to the total conversion rate curve and the conversion rate curves corresponding to each of the sub-processes.

4. The method according to any one of claims 1 to 3, characterized in that, The determining of the weight of each of the various forms of pore water according to the weight proportions of each of the various forms of pore water and the weight loss of the sample to be tested comprises: determining the product results of the weight proportions of each of the various forms of pore water and the weight loss; taking the product results of the weight proportions of each of the various forms of pore water and the weight loss as the weight of the corresponding form of pore water.

5. A pore water quantification device, characterized by, The device comprises: an obtaining module configured to obtain a first curve of a sample to be tested, the first curve being a curve between residual weight percentage and temperature obtained after thermogravimetric analysis of the sample to be tested by a thermogravimetric analyzer; a first determining module configured to determine weight proportions of each of various forms of pore water included in the sample to be tested according to the first curve and a kinetic reaction model; and a second determining module configured to determine the weight of each of the various forms of pore water according to the weight proportions of each of the various forms of pore water and a weight loss of the sample to be tested. The second determining module is configured to determine the weight of each of the morphological pore water according to the weight proportion of each of the morphological pore water and the weight loss of the sample to be measured. The first determining module comprises: The first determining sub-module is configured to normalize each of the residual weight percentages on the first curve to obtain a conversion rate corresponding to each of the residual weight percentages. The first determining unit is configured to determine the conversion rate of each of the sub-processes according to a kinetic factor of the kinetic reaction model corresponding to each of the sub-processes; the kinetic factor comprises a mechanism function, an activation energy and a pre-exponential factor. The second determining unit is configured to determine the weight proportion of each of the morphological pore water included in the sample to be measured according to the conversion rate of each of the sub-processes and the conversion rate corresponding to each of the residual weight percentages. Each of the morphological pore water can comprise strong bound water, weak bound water and capillary water; each of the sub-processes comprises a thermal desorption process of strong bound water in a thermogravimetric analysis process, a thermal desorption process of weak bound water in the thermogravimetric analysis process and a thermal desorption process of capillary water in the thermogravimetric analysis process.

6. The apparatus of claim 5, wherein, The second determining unit comprises: The first determining sub-unit is configured to derive a conversion rate curve corresponding to each of the sub-processes by differentiating the conversion rate of each of the sub-processes with respect to temperature. The second determining sub-unit is configured to determine the weight proportion of each of the morphological pore water included in the sample to be measured according to the conversion rate curve corresponding to each of the sub-processes and the conversion rate corresponding to each of the residual weight percentages.

7. The apparatus of claim 6, wherein, The second determining sub-unit is specifically configured to derive a total conversion rate curve corresponding to a total process by differentiating the conversion rate corresponding to each of the residual weight percentages with respect to temperature; and determine the weight proportion of each of the morphological pore water included in the sample to be measured according to the total conversion rate curve and the conversion rate curve corresponding to each of the sub-processes. 8.A computer device, comprising a memory and a processor, wherein the memory stores a computer program, and the computer device is configured to perform the method according to any one of claims 1-7. The processor executes the computer program to implement the steps of the method of any one of claims 1 to 4.

9. A computer readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the steps of the method of any one of claims 1 to 4.

10. A computer program product comprising a computer program, characterized in that, The computer program is executed by the processor to implement the steps of the method of any one of claims 1 to 4.

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