Method for determining emulsified asphalt non-stick wheel temperature range and application

Abstract

The application provides a method for determining the non-stick wheel temperature range of emulsified asphalt and application, and particularly relates to the technical field of emulsified asphalt. The method comprises the following steps: A, evaporating the emulsified asphalt to obtain an evaporation residue, and then short-term aging the evaporation residue to obtain a short-term aging sample; B, respectively testing the rheological properties of the evaporation residue and the short-term aging sample by using a dynamic shear rheometer to obtain a first rut factor G* / sinδ and determine a high-temperature grade; and C, performing a temperature scanning test on the evaporation residue by using the dynamic shear rheometer to obtain a second rut factor G* / sinδ and obtain a non-stick wheel temperature range. According to the characteristics of the binder emulsified asphalt, the rheological properties and the temperature scanning are quantitatively characterized by using the dynamic shear rheometer, a scientific method for determining the non-stick wheel temperature range is established, a guidance method is provided for the binder construction, the test cost is reduced, and the work efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of emulsified asphalt, in particular to a method for determining the temperature range of emulsified asphalt not sticking to the wheel and application thereof. BACKGROUND

[0002] As the interlayer material of asphalt pavement, the bonding layer needs to have strong shear resistance and bonding performance, and also needs to have excellent high-temperature rheological performance to resist the influence of asphalt mixture paving on the bonding layer, ensure the integrity of the asphalt interlayer function in the actual operation process of the road, and fully play the excellent road performance of the asphalt pavement. However, the conventional bonding layer cannot avoid the damage to the integrity of the bonding layer caused by the passing of construction vehicles and sticking to the bonding layer. Based on this, various new non-wheel-sticking bonding layers have been introduced into the pavement engineering of highways and urban roads.

[0003] However, at the present stage, the research on the non-wheel-sticking bonding layer is mostly concentrated on research and application. The non-wheel-sticking construction temperature of the bonding layer is generally determined according to the experience of construction personnel, and cannot establish a direct quantitative relationship with the material of the bonding layer, and cannot provide effective suggestions for the determination of the non-wheel-sticking construction temperature of the bonding layer.

[0004] Therefore, the present application is proposed. SUMMARY

[0005] One of the purposes of the present application is to provide a method for determining the temperature range of emulsified asphalt not sticking to the wheel, which aims to solve the technical problem that the construction temperature of the bonding layer in the prior art can only be determined according to the experience of construction personnel, cannot establish a direct quantitative relationship with the bonding layer, and cannot provide effective suggestions for the determination of the construction temperature of the bonding layer.

[0006] The second purpose of the present application is to provide a method for determining the temperature range of emulsified asphalt not sticking to the wheel in the calculation of the construction temperature of emulsified asphalt.

[0007] To solve the above technical problems, the present application adopts the following technical scheme:

[0008] The first aspect of the present application provides a method for determining the temperature range of emulsified asphalt not sticking to the wheel, comprising the following steps:

[0009] A. Evaporating emulsified asphalt to obtain an evaporation residue, and then short-term aging the evaporation residue to obtain a short-term aged sample;

[0010] B. Using a dynamic shear rheometer to perform rheological property tests on the evaporation residue and the short-term aged sample respectively to obtain a first rut factor G* / sinδ, and determine the high-temperature grade of the emulsified asphalt;

[0011] C. using a dynamic shear rheometer to perform a temperature scanning test on the evaporation residue to obtain a second rutting factor G* / sin delta, and obtaining an emulsified asphalt non-sticking wheel temperature interval.

[0012] Further, the emulsified asphalt non-sticking wheel temperature interval is obtained by the second rutting factor G* / sin delta and the non-sticking wheel upper limit value and the non-sticking wheel lower limit value.

[0013] Further, the non-sticking wheel upper limit value is 10 Kpa, and the non-sticking wheel lower limit value is 18 Kpa.

[0014] Further, the non-sticking wheel upper limit value is obtained by the second rutting factor G* / sin delta and the non-sticking wheel upper limit value, and the non-sticking wheel lower limit value is obtained by the second rutting factor G* / sin delta and the non-sticking wheel lower limit value.

[0015] Further, the non-sticking wheel lower limit value and the non-sticking wheel upper limit value constitute the emulsified asphalt non-sticking wheel temperature interval.

[0016] Further, in step B, the rheological property test uses a strain control mode, the angular frequency is 10 rad / s, the starting temperature is 46-58 DEG C, and each time the temperature is increased by 3-6 DEG C.

[0017] Further, in step C, the temperature scanning test uses a strain control mode, the angular frequency is 10 rad / s, the starting temperature is 16-28 DEG C, and each time the temperature is increased by 3-6 DEG C.

[0018] Further, in step A, the evaporation residue is obtained by the following steps:

[0019] The emulsified asphalt is placed on a tray, the tray is first placed in a 30-40 DEG C oven for 11-13 h, and then placed in a 50-60 DEG C environment for 11-13 h, and then the sample is taken out and cooled to obtain the evaporation residue.

[0020] Preferably, the material of the tray is silica gel.

[0021] Further, in step A, the short-term aging is performed by the following steps:

[0022] The evaporation residue is placed in an oven for short-term aging at 162.5-163.5 DEG C for 84-86 min to obtain the aged sample.

[0023] The second aspect of the application provides the application of the determination method in the construction temperature of the emulsified asphalt.

[0024] Compared with the prior art, the application has at least the following beneficial effects:

[0025] The emulsified asphalt non-stick wheel temperature interval determination method provided by the present application is based on the viscoelastic nature of asphalt and analyzes based on the principle of rheology. The internal correlation between the non-stick wheel performance and the rheological performance is explored by a dynamic shear rheometer, and the maximum allowable construction temperature of the non-stick wheel emulsified asphalt is determined by combining the non-stick wheel threshold interval based on the rut factor G* / sin delta. The shortcomings that the construction temperature of the previous bonding layer cannot establish a direct quantitative relationship with the bonding layer and cannot provide effective recommendations for determining the construction temperature of the non-stick wheel bonding layer are solved. According to the characteristics of the bonding layer emulsified asphalt, the rheological properties and temperature scanning are quantitatively characterized by a dynamic shear rheometer, and a scientific non-stick wheel temperature interval determination method is established. The method provides a guidance method for the construction of the bonding layer, and through effective recommendation guidance, it can reduce unnecessary paving tests, reduce test costs, and improve work efficiency.

[0026] The application of the emulsified asphalt non-stick wheel temperature interval determination method provided by the present application in calculating the construction temperature of emulsified asphalt provides a method for determining the construction temperature of the bonding layer, and improves the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0028] Figure 1 The broken line graph for comparing the non-stick wheel lower rut factor and the stick wheel upper rut factor provided for Example 1;

[0029] Figure 2 The broken line graph for comparing the non-stick wheel lower rut factor and the stick wheel upper rut factor provided for Example 2;

[0030] Figure 3 The broken line graph for comparing the non-stick wheel lower rut factor and the stick wheel upper rut factor provided for Example 3. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown herein can be arranged and designed in various different configurations.

[0032] A method for determining a non-stick wheel temperature range of emulsified asphalt according to the first aspect of the present application comprises the following steps:

[0033] A, evaporating the emulsified asphalt to obtain an evaporation residue, and then short-term aging the evaporation residue to obtain a short-term aged sample;

[0034] B, performing rheological property tests on the evaporation residue and the short-term aged sample respectively by using a dynamic shear rheometer to obtain a first rut factor G* / sinδ, and determining a high-temperature grade of the emulsified asphalt;

[0035] C, performing a temperature scanning test on the evaporation residue by using the dynamic shear rheometer to obtain a second rut factor G* / sinδ, and obtaining the non-stick wheel temperature range of the emulsified asphalt.

[0036] The method for determining the non-stick wheel temperature range of the emulsified asphalt provided by the present application is based on the viscoelastic nature of asphalt and the rheological principle. The internal correlation between the non-stick wheel performance and the rheological performance is explored by using the dynamic shear rheometer, and the maximum allowable construction temperature of the non-stick wheel emulsified asphalt is determined by combining the non-stick wheel threshold range based on the rut factor G* / sinδ. The shortcomings of the previous construction temperature of the bonding layer which cannot establish a direct quantitative relationship with the material of the bonding layer and cannot provide effective suggestions for determining the construction temperature of the bonding layer are solved. According to the characteristics of the emulsified asphalt of the bonding layer, the rheological properties and temperature scanning are quantitatively characterized by using the dynamic shear rheometer, and a scientific method for determining the non-stick wheel temperature range is established. The method provides a guidance method for the construction of the bonding layer, and through effective suggestion guidance, it can reduce unnecessary paving tests, reduce test costs, and improve work efficiency.

[0037] In step A, the evaporation residue is obtained by low-temperature evaporation of the emulsified asphalt. The evaporation residue eliminates the interference of water, can reflect the most real material components of the emulsified asphalt, and by using the optimized low-temperature evaporation method, the influence of the traditional high-temperature evaporation method on the aging of the components of the emulsified asphalt can be minimized. The short-term aged sample can simulate the real aging degree caused by the volatilization and oxidation of light oil due to heating after the construction of the emulsified asphalt in the actual project. Therefore, by performing rheological property tests on the evaporation residue and the short-term aged sample, different rut factors under two working conditions can be obtained, and according to the provisions in JTGE20-2011, the temperature grade corresponding to the high-temperature failure temperature of the emulsified asphalt under the most unfavorable working condition is obtained as the high-temperature grade. The temperature scanning of the evaporation residue can obtain the rut factor at a lower temperature, which is conducive to fitting the rut factor rule range and determining the non-stick wheel temperature range, and can objectively reflect the construction temperature characteristics of the emulsified asphalt in the actual project, ensuring that it does not undergo phase change and does not stick to the wheel, and finding the accurate phase change point.

[0038] In step B, the first rut factor G* / sinδ is a high temperature stability characterization index, the larger the rut factor, the better the high temperature stability performance, and the evaporation residue value at ≥1 KPa reflects the basic requirements of the material on asphalt during transportation, storage and handling; the second rut factor >2.2 KPa after short-term aging of the sample represents the performance requirements of the asphalt after short-term aging during the mixing, paving and rolling processes to prevent rutting of the asphalt pavement, and the temperature corresponding to the first rut factor G* / sinδ=1 KPa and the second rut factor =2.2 KPa is the failure temperature, and the lower value is the high temperature grade of the material.

[0039] 2.2KPa corresponds to the temperature, and the lower value is the failure temperature, and the lower value is the high temperature grade of the material.

[0040] Further, the emulsified asphalt non-stick wheel temperature interval is obtained by the second rut factor G* / sinδ and the upper limit value and the lower limit value of the non-stick wheel.

[0041] In step C, the second rut factor G* / sinδ is obtained by temperature scanning test data, and the second rut factor G* / sinδ has a corresponding temperature corresponding to the upper limit value and the lower limit value of the non-stick wheel.

[0042] Further, the upper limit value of the non-stick wheel is 10 KPa, and the lower limit value of the non-stick wheel is 18 KPa. The second rut factor G* / sinδ reflects the stability of the material at medium and low temperatures, and its value is greater than 18 KPa, which has the property of non-stick wheel, because its flow deformation is within a controllable range, and its cohesive force is greater than the adhesive force generated by the external environment.

[0043] Further, the upper limit value of the emulsified asphalt non-stick wheel temperature is obtained by the second rut factor G* / sinδ and the upper limit value of the non-stick wheel, and the lower limit value of the emulsified asphalt non-stick wheel temperature is obtained by the second rut factor G* / sinδ and the lower limit value of the non-stick wheel.

[0044] Further, the lower limit value and the upper limit value of the emulsified asphalt non-stick wheel temperature form an emulsified asphalt non-stick wheel temperature interval.

[0045] Further, in step B, the rheological property test adopts a strain control mode, the angular frequency is 10 rad / s, the starting temperature is 46-58°C, and each time it is increased by 3-6°C.

[0046] The rheological property test is to obtain high temperature rheological properties of the material, and establish the correlation between the rut factor and the non-stick wheel. When the starting temperature of the test is lower than 46℃, the temperature is raised slowly, and the test time is too long. When the starting temperature is higher than 58℃, the rut factor curve of the common emulsified asphalt cannot be well reflected, and the high temperature grade of the emulsified asphalt with poor high temperature performance cannot be obtained. In some embodiments of the present application, the starting temperature is typically but not limited to 46℃, 49℃, 52℃, 55℃ or 58℃. Considering the experimental time and experimental accuracy, the temperature gradient is set to 3℃-6℃, and in some embodiments of the present application, the temperature gradient is typically but not limited to 3℃, 4℃, 5℃ or 6℃.

[0047] Further, in step C, the temperature scanning test adopts a strain control mode, the angular frequency is 10 rad / s, the starting temperature is 16℃-28℃, and each time the temperature is increased by 3℃-6℃.

[0048] The temperature scanning test is to test the rut factor of the emulsified asphalt residue under medium temperature conditions. When the starting temperature of the test is lower than 16℃, the test time is too long, and it is not meaningful. When the starting temperature is higher than 28℃, the medium temperature rut factor curve of the common emulsified asphalt cannot be well reflected, and the rut factor of the emulsified asphalt with poor non-stick wheel performance cannot be obtained. In some embodiments of the present application, the starting temperature is typically but not limited to 16℃, 19℃, 22℃, 25℃ or 28℃. Considering the experimental time and experimental accuracy, the temperature gradient is set to 3℃-6℃, and in some embodiments of the present application, the temperature gradient is typically but not limited to 3℃, 4℃, 5℃ or 6℃.

[0049] Further, in step A, the step of obtaining the evaporation residue is as follows:

[0050] The emulsified asphalt is placed on a tray, the tray is first placed in an oven with a temperature typically but not limited to 30℃, 32℃, 34℃, 36℃, 38℃ or 40℃ for a holding time typically but not limited to 11h, 12h or 13h, and then placed in an environment with a temperature typically but not limited to 50℃, 52℃, 54℃, 56℃, 58℃ or 60℃ for a holding time typically but not limited to 11h, 12h or 13h, and then the sample is taken out and cooled to obtain the evaporation residue;

[0051] Preferably, the material of the tray is silica gel.

[0052] Further, in step A, the step of short-term aging is as follows:

[0053] The evaporation residue is placed in an oven for short-term aging at a temperature typically but not limited to 162.5℃, 163℃ or 163.5℃ for a time typically but not limited to 84min, 85min or 86min to obtain the aged sample.

[0054] The second aspect of the present application provides application of the determination method of the non-sticking wheel temperature range of emulsified asphalt in calculation of emulsified asphalt construction temperature.

[0055] The application provides application of the determination method of the non-sticking wheel temperature range of emulsified asphalt in calculation of emulsified asphalt construction temperature, thereby providing a method for determining the construction temperature of a tack coat layer and improving work efficiency.

[0056] Some embodiments of the present application are described in detail below with reference to examples. In the case of no conflict, the examples described below and the features in the examples can be combined with each other. The raw materials used in the present application can be commercially available, unless otherwise specified.

[0057] Example 1

[0058] The present embodiment provides a determination method of a non-sticking wheel temperature range of emulsified asphalt B, wherein the emulsified asphalt B is a non-sticking wheel emulsified asphalt prepared from No. 30 hard petroleum asphalt, and the specific operation steps of the determination method are as follows:

[0059] 1. The emulsified asphalt B is placed on a silica gel tray, the tray is first placed in a 35℃ oven for 12h, and then is placed in a 50℃ environment for 12h, then the sample is taken out and cooled to room temperature to obtain the evaporation residue of the emulsified asphalt B.

[0060] 2. The evaporation residue of the emulsified asphalt B is placed in a rotary thin film oven for short-term aging, the aging temperature is 163℃, and the aging time is 85 minutes, to obtain a short-term aged sample.

[0061] 3. The dynamic shear rheometer (DSR) is used to respectively test the rheological properties of the evaporation residue and the short-term aged evaporation residue, the strain control mode is used, the frequency is 10 rad / s, the starting temperature is 52℃, and each time the temperature is increased by 6℃, the rut factor is calculated by measuring the complex shear modulus and the phase angle, the results are shown in Table 1, and the high temperature grade of the emulsified asphalt B is determined, the results are shown in Table 2.

[0062] Table 1 Rheological property test data

[0063]

[0064] Table 2 High temperature grade

[0065] Asphalt type Emulsified asphalt B Failure temperature (°C) 76.3 High temperature grade (°C) 76

[0066] 4. The evaporation residue of emulsified asphalt B was subjected to temperature scanning mode by using dynamic shear rheometer (DSR), strain control mode was adopted, frequency was taken as 10 rad / s, starting temperature was 22℃, interval rising temperature was 6℃, and rut factor G* / sinδ was calculated according to the test results, the results are shown in Table 3. The rut factor was compared with the lower limit rut factor of non-sticky wheel and the upper limit rut factor of sticky wheel, the comparison results are shown in Table 4, and the non-sticky wheel temperature of emulsified asphalt B was obtained, that is, the maximum allowable construction temperature of the material, the results are shown in Table 4. Figure 1

[0067] Table 3 Temperature scanning test data

[0068] Test temperature (°C) Emulsified asphalt B 22 105.675 28 78.324 34 58.232 40 41.834 46 28.921 52 15.203 58 6.7796 64 2.793 70 1.452 76 1.236 82 0.991 88 0.439

[0069] Table 4 Allowable construction temperature table

[0070] Temperature Emulsified asphalt B No drum lower limit temperature 50 Drum upper limit temperature 55 Allowable maximum construction temperature 50

[0071] Example 2

[0072] The embodiment provides a method for determining the non-sticky wheel temperature range of general emulsified asphalt, the general emulsified asphalt is PC-3 type emulsified asphalt for adhesive layer, and the operation steps of the specific determination method are as follows:

[0073] 1. The general emulsified asphalt is placed on a silica gel tray, the tray is first placed in a 35℃ oven for 12h, and then is placed in a 50℃ environment for 12h, then the sample is taken out and cooled to room temperature to obtain the evaporation residue of the general emulsified asphalt.

[0074] 2. The evaporation residue of the general emulsified asphalt is placed in a rotary film oven for short-term aging, the aging temperature is 163℃, and the aging time is 85 minutes, to obtain the sample after short-term aging.

[0075] 3. Rheological property test is performed on the evaporation residue and the evaporation residue after short-term aging by using a dynamic shear rheometer (DSR), strain control mode is adopted, frequency is taken as 10 rad / s, starting temperature is 52℃, and each time is increased by 6℃, the rut factor is calculated by measuring the complex shear modulus and phase angle, the results are shown in Table 5, and the high-temperature grade of the general emulsified asphalt is determined, the results are shown in Table 6.

[0076] Table 5 Rheological property test data

[0077]

[0078] Table 6 High-temperature grade

[0079] Asphalt type Ordinary emulsified asphalt Failure temperature (°C) 68.1 High temperature grade (°C) 64

[0080] ​4. The evaporation residue of the ordinary emulsified asphalt is subjected to temperature scanning mode by using dynamic shear rheometer (DSR), strain control mode is adopted, frequency is taken as 10 rad / s, starting temperature is 22℃, interval rising temperature is 6℃, and rut factor G* / sinδ is calculated according to the test result, and the result is shown in Table 7. It is compared with the lower limit rut factor of non-sticky wheel and the upper limit rut factor of sticky wheel, and the comparison result is shown in Table 8, so that the non-sticky wheel temperature of the ordinary emulsified asphalt is obtained, that is, the maximum allowable construction temperature of the material, and the result is shown in Table 8. Figure 2

[0081] Table 7 Temperature scanning test data

[0082] Test temperature (°C) Ordinary emulsified asphalt 22 98.831 28 70.382 34 47.835 40 29.389 46 18.031 52 8.327 58 4.062 64 1.872 70 0.905 76 0.542 82 0.201 88 0.098

[0083] Table 8 Allowable construction temperature table

[0084] Temperature Ordinary emulsified asphalt No drum lower limit temperature 46 Drum upper limit temperature 51 Allowable maximum construction temperature 46

[0085] Example 3

[0086] The embodiment provides a method for determining the non-sticky wheel temperature range of emulsified asphalt B, the emulsified asphalt B is non-sticky wheel emulsified asphalt prepared by using No. 30 hard petroleum asphalt, and specific operation steps of the determining method are as follows.

[0087] 1. The step is the same as that in Example 1.

[0088] 2. The step is the same as that in Example 1.

[0089] 3. Rheological property tests are respectively conducted on the evaporation residue and the evaporation residue after short-term aging by using dynamic shear rheometer (DSR), strain control mode is adopted, frequency is taken as 10 rad / s, starting temperature is 52℃, and each time rising temperature is 3℃, rut factor is calculated by measuring complex shear modulus and phase angle, the result is shown in Table 9, and the high-temperature grade of the emulsified asphalt B is determined, and the result is shown in Table 10.

[0090] Table 9 Rheological property test data

[0091]

[0092] Table 10 High-temperature grade

[0093] Asphalt type Emulsified asphalt B Failure temperature (°C) 77.5 High temperature grade (°C) 76

[0094] ​4. The evaporation residue of emulsified asphalt B was subjected to temperature scanning mode by using dynamic shear rheometer (DSR), strain control mode was adopted, frequency was taken as 10 rad / s, starting temperature was 22℃, interval rising temperature was 3℃, and rut factor G* / sinδ was calculated according to the test results, the results were shown in Table 11. It was compared with the lower limit rut factor of non-sticky wheel and the upper limit rut factor of sticky wheel, the comparison results were shown in Table 12, and the non-sticky wheel temperature of emulsified asphalt B was obtained, i.e. the maximum allowable construction temperature of the material, the results were shown in Table 12. Figure 3

[0095] Table 11 Temperature scanning test data

[0096] Test temperature (°C) Emulsified asphalt B Test temperature (°C) Emulsified asphalt B 22 105.675 58 6.796 26 90.512 61 5.024 28 78.324 64 2.793 31 70.254 67 2.035 34 58.232 70 1.452 37 50.681 73 1.362 40 41.834 76 1.236 43 36.040 79 1.098 46 28.921 82 0.991 49 21.650 85 0.684 52 18.203 88 0.439 55 11.840 91 0.271

[0097] Table 12 Allowable construction temperature table

[0098] Temperature Emulsified asphalt B No drum lower limit temperature 52 Drum upper limit temperature 58 Allowable maximum construction temperature 52

[0099] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.​

Claims

1. A method for determining a non-sticking wheel temperature range for emulsified asphalt, characterized by, The method comprises the following steps: A. evaporating the emulsified asphalt to obtain an evaporation residue, and then short-term aging the evaporation residue to obtain a short-term aged sample; B. performing a rheological property test on the evaporation residue and the short-term aged sample respectively by using a dynamic shear rheometer to obtain a first rutting factor G* / sinδ, and determining the high-temperature grade of the emulsified asphalt; C. performing a temperature scanning test on the evaporation residue by using the dynamic shear rheometer to obtain a second rutting factor G* / sinδ, obtaining an upper limit value of the non-stick roller temperature of the emulsified asphalt by the second rutting factor G* / sinδ and an upper limit value of the non-stick roller, obtaining a lower limit value of the non-stick roller temperature of the emulsified asphalt by the second rutting factor G* / sinδ and a lower limit value of the non-stick roller, and obtaining a non-stick roller temperature interval of the emulsified asphalt from the lower limit value and the upper limit value of the non-stick roller temperature of the emulsified asphalt; wherein the upper limit value of the non-stick roller is 10 KPa, and the lower limit value of the non-stick roller is 18 KPa.

2. The determination method according to claim 1, characterized in that, In step B, the rheological property test adopts a strain control mode, an angular frequency of 10 rad / s, a starting temperature of 46-58℃, and an increase of 3-6℃ each time.

3. The determination method according to claim 1, characterized in that, In step C, the temperature scanning test adopts a strain control mode, an angular frequency of 10 rad / s, a starting temperature of 16-28℃, and an increase of 3-6℃ each time.

4. The determination method according to claim 1, characterized in that, In step A, the step of obtaining the evaporation residue is as follows: placing the emulsified asphalt on a tray, first placing the tray in an oven at 30-40℃ for 11-13h, then placing the tray in an environment at 50-60℃ for 11-13h, then taking out the sample and cooling to obtain the evaporation residue; the material of the tray is silica gel.

5. The determination method according to claim 1, characterized in that, In step A, the step of short-term aging is as follows: placing the evaporation residue in an oven at 162.5-163.5℃ for short-term aging for 84-86min to obtain the aged sample.

6. Application of the determination method of any one of claims 1-5 in calculating the construction temperature of emulsified asphalt.

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