LC3 recycled concrete design method considering strength and environmental influence

Abstract

The invention discloses an LC3 recycled concrete design method considering strength and environmental influence. The method comprises the following steps: acquiring material design quality and environmental influence parameters of various materials in LC3 recycled concrete; a stress-strain constitutive model of the LC3 recycled concrete is constructed, the designed compressive strength of the LC3 recycled concrete is obtained according to the stress-strain constitutive model and the material design quality, and the total carbon emission amount and the total energy consumption amount of the LC3 recycled concrete are calculated according to the material design quality and the environmental influence parameters; and when the designed compressive strength is greater than or equal to the preset compressive strength, and the total carbon emission amount and the total energy consumption amount respectively meet respective corresponding design requirements, taking the material design mass as a material target mass, and preparing the LC3 recycled concrete according to the material target mass. The carbon emission and the energy consumption are reduced while the strength of the concrete is ensured, and the environmental pollution is further reduced by using the recycled aggregate.

Description

Technical Field

[0001] The present invention relates to the field of recycled concrete design technology, and more particularly to a LC 3 Recycled concrete design method, system, terminal and computer-readable storage medium. Background Art

[0002] At present, the low-carbon and sustainable development of the construction industry faces the challenges of a shortage of primary construction resources and a large increase in construction waste. Traditional concrete production relies on cement, which leads to a large amount of carbon dioxide emissions, making traditional concrete prone to environmental pollution.

[0003] The existing technologies that can reduce concrete environmental pollution mainly include the following:

[0004] First, use high-performance concrete: High-performance concrete improves the performance of concrete by optimizing the mix ratio and using high-efficiency water reducers, thereby reducing water and cement usage. It usually has higher compressive strength, crack resistance and durability, and can reduce the amount of cement used, thereby reducing carbon emissions. However, the material cost is high, especially additives such as high-efficiency water reducers. The construction process requirements are high and require professional technicians to operate and ensure quality control.

[0005] Second, use industrial by-products: Using industrial by-products, such as fly ash, slag powder, silica fume, etc. to replace part of the cement can effectively reduce the amount of cement used and reduce carbon emissions in the concrete production process. These by-products can improve the microstructure of concrete, increase its density and impermeability. Reducing carbon dioxide emissions in cement production is helpful for environmental protection. However, the source and quality of raw materials are unstable, which may affect the consistency of concrete performance and the early strength development of concrete.

[0006] Third, use self-healing concrete: Self-healing concrete adds self-healing materials, such as specific types of bacteria or chemicals, to concrete to enable it to self-repair when cracks appear. This type of concrete can automatically heal small cracks, extend the service life of the structure, and reduce maintenance costs. It can reduce resource waste and environmental impact caused by crack repair. However, this new technology has not yet been widely used and has low market acceptance. It is also costly, has a complex production process, and requires precise control of material addition and mixing.

[0007] Therefore, the prior art still needs to be improved and developed. Summary of the invention

[0008] The main purpose of this application is to provide a LC that takes into account both strength and environmental impact. 3The recycled concrete design method aims to solve the problem in existing technology that traditional concrete production relies on cement, which requires the emission of a large amount of carbon dioxide, resulting in greater environmental pollution and low durability.

[0009] The first embodiment of the present application provides a LC system that takes both strength and environmental impact into consideration. 3 The recycled concrete design method includes the following steps: obtaining LC 3 Material design qualities and environmental impact parameters of various materials in recycled concrete; construct LC 3 The stress-strain constitutive model of recycled concrete is obtained according to the stress-strain constitutive model and the material design quality. 3 The design compressive strength of recycled concrete is calculated based on the material design quality and the environmental impact parameters. 3 The total carbon emissions and total energy consumption of recycled concrete; when the designed compressive strength is greater than or equal to the preset compressive strength, and the total carbon emissions and the total energy consumption meet the corresponding design requirements, the material design mass is used as the material target mass to prepare the LC according to the material target mass. 3 Recycled concrete.

[0010] Optionally, in one embodiment of the present application, the LC that takes both strength and environmental impact into consideration 3 The recycled concrete design method further includes: when the designed compressive strength is less than the preset compressive strength, or when any one of the total carbon emissions and the total energy consumption does not meet the corresponding design requirements, adjusting the material design quality to obtain the material redesign quality; obtaining the LC according to the stress-strain constitutive model and the material redesign quality 3 Adjusted compressive strength of recycled concrete and calculation of the LC based on the material redesign quality and the environmental impact parameters 3 The current total carbon emissions and the current total energy consumption of the recycled concrete are adjusted until the compressive strength is greater than or equal to the preset compressive strength, and the current total carbon emissions and the current total energy consumption respectively meet their corresponding design requirements.

[0011] Optionally, in one embodiment of the present application, the stress-strain constitutive model is expressed as:

[0012]

[0013] a=1.4;

[0014] x=ε / ε p , y=σ / σ p ;

[0015] Where x is the strain ratio, ε is the strain, and ε p is the peak strain, y is the stress ratio, σ is the stress, σ p is the peak stress, a and b are constants.

[0016] Optionally, in one embodiment of the present application, the construction of LC 3 The stress-strain constitutive model of recycled concrete includes: obtaining LC 3 Test data of recycled concrete, wherein the test data includes 3 LC made under substitution rate and recycled aggregate substitution rate 3 Peak strain and compressive strength of recycled concrete; Determine model parameters based on the test data; Construct LC based on the model parameters 3 Stress-strain constitutive model of recycled concrete.

[0017] Optionally, in one embodiment of the present application, the LC is obtained according to the stress-strain constitutive model and the material design quality. 3 The design compressive strength of recycled concrete specifically includes: determining the LC according to the material design quality 3 LC of recycled concrete 3 Design replacement rate; According to the stress-strain constitutive model and the LC 3 Design substitution rate and calculate the LC 3 Design compressive strength of recycled concrete.

[0018] Optionally, in one embodiment of the present application, the environmental impact parameter includes the LC 3 The carbon emission values ​​and energy consumption values ​​per unit mass of various materials in recycled concrete specifically include: the LC is calculated based on the material design mass and the environmental impact parameters. 3 The total carbon emissions and energy consumption of recycled concrete; according to the LC 3 The material design mass of various materials in recycled concrete and the corresponding carbon emission values ​​are used to calculate the LC 3 The total carbon emissions of recycled concrete; according to the LC 3 The material design mass of various materials in recycled concrete and the corresponding energy consumption values ​​are used to calculate the LC 3 Total energy consumption of recycled concrete.

[0019] Optionally, in one embodiment of the present application, the design requirements include a total carbon emission threshold corresponding to the total carbon emissions and a total energy consumption threshold corresponding to the total energy consumption; when the total carbon emissions and the total energy consumption respectively meet their corresponding design requirements, the material design quality is used as the material target quality, specifically including: obtaining the total carbon emission threshold and the total energy consumption threshold corresponding to the material design quality; if the total carbon emissions are less than or equal to the total carbon emission threshold, and the total energy consumption is less than or equal to the total energy consumption threshold, then the material design quality is used as the material target quality.

[0020] The second aspect of the present application provides a LC system that takes both strength and environmental impact into consideration. 3 Recycled concrete design system, in which the LC takes into account both strength and environmental impact 3 The recycled concrete design system includes:

[0021] Material quality design acquisition module, used to obtain LC 3 Material design qualities and environmental impact parameters of various materials in recycled concrete;

[0022] Compressive strength and environmental impact calculation module for building LC 3 The stress-strain constitutive model of recycled concrete is obtained according to the stress-strain constitutive model and the material design quality. 3 The design compressive strength of recycled concrete is calculated based on the material design quality and the environmental impact parameters. 3 Total carbon emissions and total energy consumption of recycled concrete;

[0023] A material quality determination module is used to use the material design quality as the material target quality when the design compressive strength is greater than or equal to the preset compressive strength, and the total carbon emission and the total energy consumption meet the corresponding design requirements respectively, so as to prepare the LC according to the material target quality. 3 Recycled concrete.

[0024] The third aspect of the present application provides a terminal, the terminal comprising: a memory, a processor, and an LC system that takes both strength and environmental impact into consideration and is stored in the memory and can be run on the processor. 3 Recycled concrete design procedure, LC that takes into account both strength and environmental impact 3 When the recycled concrete design program is executed by the processor, the LC that takes both strength and environmental impact into consideration as described in the above embodiment is realized. 3 Steps in the recycled concrete design methodology.

[0025] A fourth aspect of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores an LC having both strength and environmental impact. 3 Recycled concrete design procedure, LC that takes into account both strength and environmental impact 3 When the recycled concrete design program is executed by the processor, the LC that takes into account both strength and environmental impact as described in the above embodiment is realized. 3 Steps in the recycled concrete design methodology.

[0026] Beneficial effects of this application:

[0027] The present application provides a LC that takes into account both strength and environmental impact. 3 Recycled concrete design and system, this application embodiment adopts LC 3 Replace part of cement, and part of natural aggregate with recycled aggregate, and 3 The material quality of recycled concrete is designed to meet the requirements and ensure LC 3 LC under substitution rate 3 Recycled concrete has higher compressive strength, which reduces environmental pollution and improves the durability of concrete.

[0028] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0030] Figure 1 This is the LC that takes both strength and environmental impact into consideration. 3 A flow chart of a preferred embodiment of a recycled concrete design method;

[0031] Figure 2 This is the LC that takes both strength and environmental impact into consideration. 3 LC of recycled concrete design method 3 -Schematic diagram of the RAC stress-strain constitutive model;

[0032] Figure 3 This is the LC that takes both strength and environmental impact into consideration. 3 A flowchart of specific implementation steps of the entire execution process in a preferred embodiment of the recycled concrete design method;

[0033] Figure 4 This is the LC that takes both strength and environmental impact into consideration. 3 A schematic diagram of the structure of a preferred embodiment of a recycled concrete design system;

[0034] Figure 5 This is a schematic diagram of the structure of a preferred embodiment of the terminal of the present application.

[0035] Among them, 20-LC takes into account both strength and environmental impact 3 Recycled concrete design system, 21-material quality design acquisition module, 22-compressive strength and environmental impact calculation module, 23-material quality determination module; 301-memory, 302-processor and 303-communication interface. DETAILED DESCRIPTION

[0036] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0037] In the related technology, a new green and low-carbon limestone calcined clay cement (LC 3 ) and recycled aggregate to prepare concrete (LC 3 -RAC) is one of the effective ways. Recycled concrete not only solves the problem of natural resource shortage and environmental pollution by reusing abandoned concrete structures, but also reduces the energy consumption of natural aggregates. Traditional concrete production relies on cement, resulting in a large amount of carbon dioxide emissions, while LC 3 Cement is produced by replacing part of the cement clinker with calcined clay and limestone powder, which significantly reduces energy and CO2 emissions. 3 The material optimizes the pore structure of cementitious materials and improves durability. Recycled concrete combined with LC 3 The use of materials improves their performance and durability in coastal environments. This application uses green building materials to achieve the recycling of building resources and reduce environmental damage, providing a theoretical and practical basis for the further development and application of green building materials.

[0038] First, the nouns involved in this application are introduced:

[0039] Global Warming Potential (GWP) and Absorption and Dispersion of Light (ADP) are two environmental impact indicators. GWP measures the potential impact of a product on climate change throughout its life cycle, usually expressed in carbon dioxide equivalent (CO2). Energy consumption measures the total energy consumed during production, use and disposal. The following is an introduction to related concepts: GWP: GWP is the abbreviation of Global Warming Potential, which is abbreviated as "global warming potential" in Chinese. It indicates the potential impact of a product on climate change throughout its life cycle; ADP: ADP is the abbreviation of Aggregated Energy Consumption, which is abbreviated as "energy consumption" in Chinese. It is used to measure the total energy consumed by a product during production, use and disposal; G: G is the abbreviation of total GWP, which represents the total global warming potential (carbon emissions); E: E is the abbreviation of total ADP, which represents the total cumulative energy consumption (energy); g i :g i It is the abbreviation of Global Warming Potential per unit mass, which is abbreviated as "global warming potential per unit mass" in Chinese, indicating the global warming potential value of each material per unit mass; i :e i Aggregated Energy Consumption per unit mass is the abbreviation of Aggregated Energy Consumption per unit mass, which means the cumulative energy consumption per unit mass of each material. i :m i It is the abbreviation of Mass ofeach material, which is abbreviated as "material quality" in Chinese, referring to the quality of each material.

[0040] Stress (σ): The magnitude of the force per unit area on an object, expressed as σ = F / A, where F is the force and A is the area under force. Strain (ε): The degree of deformation of an object after being subjected to stress, expressed as ε = ΔL / L, where ΔL is the length change and L is the original length. Compressive strength is used to describe the performance limit (i.e. peak stress) of a material when subjected to compressive force. In other words, compressive strength is stress, but specifically refers to the maximum stress value under compression; strain is used to describe the degree of deformation of a material when subjected to external force.

[0041] The following describes the LC of the embodiment of the present application taking both strength and environmental impact into consideration with reference to the accompanying drawings. 3Recycled concrete design method. In view of the problem mentioned in the above background technology that traditional concrete production relies on cement and requires the emission of a large amount of carbon dioxide, resulting in greater environmental pollution and lower durability, this application provides a LC that takes both strength and environmental impact into consideration. 3 Recycled concrete design method, in which the LC 3 Replace part of cement, and part of natural aggregate with recycled aggregate, and 3 The material quality of recycled concrete is designed to meet the requirements and ensure LC 3 LC under substitution rate 3 Recycled concrete has high compressive strength, which reduces environmental pollution and improves the durability of concrete. This solves the technical problem in related technologies that traditional concrete production relies on cement and requires the emission of a large amount of carbon dioxide, resulting in greater environmental pollution and lower durability.

[0042] In the embodiment of the present application, the difference from ordinary concrete (traditional concrete) is that LC 3 Recycled concrete using LC 3 Cement is replaced and recycled aggregate is used to replace natural aggregate. Both materials can reduce the impact on the environment, but as the replacement rate of recycled aggregate increases, the strength of concrete will decrease. 3 As the replacement rate increases, the strength of concrete will also change accordingly. Therefore, it is necessary to take into account both the strength and the emission of environmentally friendly substances. 3 Designing with recycled concrete. This approach uses innovative material combinations and design techniques to improve the mechanical performance and environmental sustainability of concrete structures.

[0043] This application proposes the following basic scheme or basic ideas:

[0044] (1) Improvement of the constitutive relationship of concrete: In view of the lack of understanding of the mechanical behavior of recycled concrete in the prior art, this application established the LC 3 The stress-strain constitutive model of recycled concrete. This model can accurately describe the LC 3 The mechanical behavior of recycled concrete at different replacement rates provides theoretical support for structural design.

[0045] (2) Quantification of environmental impact: In view of the problem that the existing technology is insufficient in assessing the environmental impact of the entire life cycle of building materials, this application introduces an environmental impact calculation method. This method evaluates the LC 3 The environmental impacts of cement and recycled aggregates during production, use and disposal provide a basis for achieving sustainable use of building materials.

[0046] The overall technical effects of this application are as follows:

[0047] (1) Improve the comprehensive performance of concrete: The constitutive model and flexural design method proposed in this application can significantly improve the LC 3 The mechanical properties of recycled concrete beams, including compressive strength, elastic modulus and flexural capacity, are evaluated while ensuring the durability of the material.

[0048] (2) Promote resource recycling: This application uses recycled aggregates and LC 3 Cement effectively utilizes construction waste and industrial by-products, reduces dependence on natural resources, and meets the requirements of sustainable development.

[0049] (3) Reducing environmental burden: The environmental impact calculation method of this application helps to reduce energy consumption and carbon emissions in the production and use of building materials, and promotes the development of green buildings.

[0050] Specifically, Figure 1 The embodiment of the present application provides an LC that takes both strength and environmental impact into consideration. 3 Schematic diagram of the process flow of the recycled concrete design approach.

[0051] like Figure 1 As shown, this LC that takes both strength and environmental impact into consideration 3 The recycled concrete design approach includes the following steps:

[0052] In step S101, obtain LC 3 Material design qualities and environmental impact parameters of various materials in recycled concrete.

[0053] In one possible implementation, LC 3 The material design quality of various materials in recycled concrete, including water, sand, ordinary aggregate, recycled aggregate, calcined clay, limestone, gypsum, cement, water reducing agent, it can be understood that LC 3 Including calcined clay, limestone, gypsum. By designing the material design mass of each material, LC is calculated 3 LC as cement replacement 3 Replacement rate, replacement rate of recycled aggregate replacing ordinary aggregate.

[0054] In step S102, construct LC 3 The stress-strain constitutive model of recycled concrete is obtained according to the stress-strain constitutive model and the material design quality. 3 The design compressive strength of recycled concrete is calculated based on the material design quality and the environmental impact parameters. 3 Total carbon emissions and total energy consumption of recycled concrete.

[0055] In one possible implementation, LC is obtained 3 Test data of recycled concrete, wherein the test data is included in LC 3 LC made under substitution rate and recycled aggregate substitution rate 3 Peak strain and compressive strength of recycled concrete; Determine model parameters based on the test data; Construct LC based on the model parameters 3 Stress-strain constitutive model of recycled concrete.

[0056] It should be noted that the existing stress-strain models of normal concrete (NCA) and recycled aggregate concrete (RAC) can describe the softening behavior of concrete from the elastic stage to the peak stress and thereafter. However, the existing models are ineffective in predicting LC 3 -RAC stress-strain curves have limitations, especially in describing the softening behavior after the peak. Therefore, this application constructs a new model to more accurately predict LC 3 - RAC conduct.

[0057] Specifically, in establishing LC 3 Stress-strain constitutive model process of recycled concrete.

[0058] First, experimental data collection was performed: 12 groups of LC with different mixing ratios were prepared in this application. 3 -RAC specimen, as shown in Table 1, and the LC 3 -RAC stress-strain data are shown in Table 2. In the experiment, LC with different substitution rates 3 and recycled aggregate (RCA) were used to prepare concrete specimens, which were then tested under uniaxial compression until failure. The experimental data included axial stress, axial strain, lateral strain, etc., which were obtained by instruments such as linear variable displacement transducers (LVDTs) and digital image correlation (DIC) systems.

[0059] Table 1: LC 3 - RAC specimen mix ratio

[0060]

[0061] Among them, NCA is common aggregate, RCA is recycled aggregate, and the units of sand, NCA, RCA, water, calcined clay, limestone, gypsum and cement are kilograms.

[0062] Table 2: LC 3 - Mechanical properties of RAC specimens

[0063]

[0064] Then, parameter determination and regression analysis were performed: Based on the experimental data, the parameters of the new model were determined by regression analysis. The selected model has two parameters a and b, which can describe the rising and falling parts of the stress-strain curve. Parameter a represents the initial tangent slope, reflecting the initial elastic modulus of concrete; parameter b is related to the slope of the falling part of the stress-strain curve. Through regression analysis, different LC 3 and the values ​​of a and b under the RCA substitution rate.

[0065] Secondly, the model was established and verified: Based on the parameters obtained by regression analysis, a model suitable for LC was established. 3 -RAC stress-strain constitutive model. The model is in the form of a mathematical equation that expresses the relationship between stress and strain as a function of parameters a and b. The stress-strain curves predicted by the model are then compared with experimental data to verify the accuracy of the model. The model's predictions agree well with the experimental results, indicating that the model can effectively describe LC 3 - Mechanical behavior of RAC.

[0066] Finally, the model is simplified and applied: Considering the convenience of practical application, the model is simplified. By analyzing the relationship between parameters a and b and the substitution rate, simplified parameter values ​​are proposed. For example, parameter a can be uniformly taken as 1.4, while parameter b can be set according to LC 3 The substitution rate is taken as 3.25 or 1.75 respectively. The simplified model can still maintain a high consistency with the experimental data, thus providing a more practical tool for engineering design and application. Figure 2 , the stress-strain constitutive model is shown as follows.

[0067]

[0068] a=1.4;

[0069]

[0070] In the formula, a and b are constants to be determined, and x = ε / ε p , y=σ / σ p , ε is strain, σ is stress, ε p is the peak stress σ p The corresponding peak strain.

[0071] Therefore, we get LC 3 -RAC stress-strain constitutive model can be used to analyze LC with different substitution rates. 3 The concrete strength of recycled aggregate is calculated. The concrete strength needs to meet the requirements of the concrete strength design specification. The minimum strength is σ0, such as Figure 2As shown by the horizontal line in the middle, the concrete whose peak point of the curve is above σ0 meets the specification requirements and is desirable, otherwise it is undesirable.

[0072] In a possible implementation, the LC is determined according to the material design quality. 3 LC of recycled concrete 3 Design replacement rate; According to the stress-strain constitutive model and the LC 3 Design substitution rate and calculate the LC 3 Design compressive strength of recycled concrete.

[0073] Specifically, by designing the material design quality of various materials, LC is calculated. 3 LC as cement replacement 3 Design the substitution rate to determine the b value in the above stress-strain constitutive model. Since the stress-strain constitutive model is a quadratic function (y = Ax 2 +Bx+C, knowing the values ​​of a and b is equivalent to determining the value of ABC in the quadratic function. According to the vertex coordinate formula (-B / 2A, (4AC-B 2 ) / 4A), thus determining Figure 2 The horizontal coordinate x and vertical coordinate y in the vertex coordinates are then calculated according to LC in Table 2. 3 Peak strain ε at substitution rate p and compressive strength (i.e. peak stress σ p ) parameters, thereby determining LC 3 The current strain ε and current stress σ0 of the recycled concrete are the design compressive strength.

[0074] In a possible implementation, the environmental impact parameter includes the LC 3 Carbon emission values ​​and energy consumption values ​​per unit mass of various materials in recycled concrete. 3 The material design mass of various materials in recycled concrete and the corresponding carbon emission values ​​are used to calculate the LC 3 The total carbon emissions of recycled concrete; according to the LC 3 The material design mass of various materials in recycled concrete and the corresponding energy consumption values ​​are used to calculate the LC 3 Total energy consumption of recycled concrete.

[0075] Specifically, LC 3 In the process of calculating the environmental impact of recycled concrete.

[0076] When conducting a life cycle assessment, multiple environmental impact indicators are usually considered, among which global warming carbon emissions (GWP) and energy consumption (ADP) are two important indicators. GWP measures the potential impact of a product on climate change throughout its life cycle, usually expressed in carbon dioxide equivalent (CO2). Energy consumption measures the total energy consumed during production, use and disposal. The calculation formulas are shown in Equations 2 and 3, and the environmental impact data of various materials per unit mass are shown in Table 3.

[0077] G=∑m i *g i ;

[0078] E=∑m i *e i ;

[0079] Where: G is the total GWP, E is the total ADP, m i is the mass of each material, g i is the GWP value per unit mass of each material, e i It is the ADP value per unit mass of each material.

[0080] Table 3: Environmental impact data of various materials per unit mass

[0081]

[0082] RAC30-LC 3 Take 50% concrete as an example to calculate the environmental impact:

[0083] G1=285.2*0.922+161.4*0.195+80.7*0.012+10.8*0.24+576.32*0.003+749.22*0.024+321.09*0.013

[0084] =321.87;

[0085] E1=285.2*7.194+161.4*4.614+80.7*0.128+10.8*3.357+576.32*0.034+749.22*0.314+321.09*0.123

[0086] =3137.36;

[0087] Calculation without LC 3 Environmental impact of concrete with recycled aggregate substitution:

[0088] G0=509.5*0.922+0*0.195+0*0.012+0*0.24+576.32*0.003+1152.64*0.024+0*0.013=499.15;

[0089] E0=509.5*7.194+0*4.614+0*0.128+0*3.357+576.32*0.034+1152.64*0.314+0*0.123=4046.96.

[0090] It can be seen that both environmental indicators have been significantly reduced, with 0.9G0 and 0.9E0 as indicators (i.e. design requirements), meeting the requirements for reducing environmental impact. 3 Design with recycled concrete.

[0091] RAC30-LC 3 15 and RAC100-LC 3 Taking two concretes with different mix ratios as an example, their compressive strengths are 35.88 and 35.83 MPa respectively, which are regarded as the same compressive strength, and their environmental impacts are calculated.

[0092] RAC30-LC 3 15:

[0093] G2=442.2*0.922+61*0.195+30.5*0.012+4.5*0.24+576.32*0.003+749.22*0.024+321.09*0.013=440.76;

[0095] E2=442.2*7.194+61*4.614+30.5*0.128+4.5*3.357+576.32*0.034+749.22*0.314+321.09*0.123=3736.50;

[0097] RAC100-LC 3 50:

[0098] G3=285.2*0.922+161.4*0.195+80.7*0.012+10.8*0.24+576.32*0.003+0*0.024+1070.31*0.013=299.72;

[0100] E3=285.2*7.194+161.4*4.614+80.7*0.128+10.8*3.357+576.32*0.034+0*0.314+1070.31*0.123=2862.61;

[0102] It can be seen that designing LC with the same strength 3 Recycled concrete can reduce the emission of substances that have an impact on the environment through optimized design.

[0103] In step S104, when the designed compressive strength is greater than or equal to the preset compressive strength, if the total carbon emission and the total energy consumption meet their respective design requirements, the material design quality is used as the material target quality to prepare the LC according to the material target quality. 3 Recycled concrete.

[0104] In a possible implementation, the design requirements include a total carbon emission threshold corresponding to the total carbon emission and a total energy consumption threshold corresponding to the total energy consumption. The total carbon emission threshold and the total energy consumption threshold corresponding to the material design quality are obtained; if the total carbon emission is less than or equal to the total carbon emission threshold, and the total energy consumption is less than or equal to the total energy consumption threshold, the material design quality is used as the material target quality.

[0105] In one possible implementation, see Figure 3 When the designed compressive strength is less than the preset compressive strength, or when any one of the total carbon emissions and the total energy consumption does not meet the corresponding design requirements, the material design quality is adjusted to obtain the material redesign quality; according to the stress-strain constitutive model and the material redesign quality, the LC 3 Adjusted compressive strength of recycled concrete and calculation of the LC based on the material redesign quality and the environmental impact parameters 3 The current total carbon emissions and the current total energy consumption of the recycled concrete are adjusted until the compressive strength is greater than or equal to the preset compressive strength, and the current total carbon emissions and the current total energy consumption respectively meet their corresponding design requirements.

[0106] The following is further implemented according to the LC that takes into account both strength and environmental impact 3 The steps of the recycled concrete design method introduce the entire implementation process, such as Figure 3 As shown:

[0107] Step S1, input m i ;

[0108] Step S2, calculating the compressive strength σ, the total carbon emission G and the total energy consumption E;

[0109] Step S3: If σ≥σ0, execute step S4; otherwise, return to step S1 to readjust m. i ;

[0110] Step S4: If G≤0.9G0 and E≤0.9E0, proceed to step S5; otherwise, return to step S1 and readjust m. i ;

[0111] Step S5, output m that meets the requirements i .

[0112] Next, the LC system that takes both strength and environmental impact into consideration according to the embodiment of the present application is described with reference to the accompanying drawings. 3 Recycled concrete design system.

[0113] Figure 4 It is an LC that takes both strength and environmental impact into consideration in the embodiment of the present application. 3 Block diagram of the recycled concrete design system.

[0114] like Figure 4 As shown, this LC that takes both strength and environmental impact into consideration 3 The recycled concrete design system 20 includes: a material quality design acquisition module 21 , a compressive strength and environmental impact calculation module 22 and a material quality determination module 23 .

[0115] Specifically, the material quality design acquisition module 21 is used to obtain LC 3 Material design qualities and environmental impact parameters of various materials in recycled concrete;

[0116] Compressive strength and environmental impact calculation module 22 for building LC 3 The stress-strain constitutive model of recycled concrete is obtained according to the stress-strain constitutive model and the material design quality. 3 The design compressive strength of recycled concrete is calculated based on the material design quality and the environmental impact parameters. 3 Total carbon emissions and total energy consumption of recycled concrete;

[0117] The material quality determination module 23 is used to use the material design quality as the material target quality when the designed compressive strength is greater than or equal to the preset compressive strength, and the total carbon emission and the total energy consumption meet the corresponding design requirements respectively, so as to prepare the LC according to the material target quality. 3 Recycled concrete.

[0118] Figure 5The terminal may include: a memory 301, a processor 302, and a computer program stored in the memory 301 and executable on the processor 302. When the processor 302 executes the program, the LC that takes into account both strength and environmental impact provided in the above embodiment is realized. 3 Recycled concrete design methods.

[0119] Furthermore, the terminal also includes: a communication interface 303, used for communication between the memory 301 and the processor 302; the memory 301, used to store a computer program that can be run on the processor 302; the memory 301 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0120] If the memory 301, the processor 302 and the communication interface 303 are implemented independently, the communication interface 303, the memory 301 and the processor 302 can be connected to each other through a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component (PCI) bus or an Extended Industry Standard Architecture (EIS) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 5 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0121] Optionally, in a specific implementation, if the memory 301, the processor 302 and the communication interface 303 are integrated on a chip, the memory 301, the processor 302 and the communication interface 303 can communicate with each other through an internal interface. The processor 302 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0122] This embodiment also provides a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, the above-mentioned method for correcting the heading angle inversion is implemented.

[0123] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0124] In addition, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "N" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. Any process or method description in the flowchart or otherwise described herein may be understood to represent a module, fragment or portion of a code including one or N executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes additional implementations, in which the functions may not be performed in the order shown or discussed, including in a substantially simultaneous manner or in a reverse order according to the functions involved, which should be understood by a technician in the technical field to which the embodiments of the present application belong.

[0125] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable storage medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, a "computer-readable storage medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples (non-exhaustive list) of computer-readable storage media include the following: an electrical connection with one or N wirings (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable storage medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways as necessary and then storing it in a computer memory.

[0126] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0127] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0128] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0129] It should be understood that the application of the present application is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. An LC that takes both strength and environmental impact into account 3 The recycled concrete design method is characterized by: The LC that takes into account both strength and environmental impact 3 Recycled concrete design methods include: Get LC 3 Material design qualities and environmental impact parameters of various materials in recycled concrete; Construction of LC 3 The stress-strain constitutive model of recycled concrete is obtained according to the stress-strain constitutive model and the material design quality. 3 The design compressive strength of recycled concrete is calculated based on the material design quality and the environmental impact parameters. 3 Total carbon emissions and total energy consumption of recycled concrete; When the designed compressive strength is greater than or equal to the preset compressive strength, and the total carbon emission and the total energy consumption meet their respective design requirements, the material design mass is used as the material target mass, and the LC is prepared according to the material target mass. 3 Recycled concrete.

2. The LC according to claim 1 that takes both strength and environmental impact into consideration 3 The recycled concrete design method is characterized by: The LC that takes into account both strength and environmental impact 3 Recycled concrete design methods also include: When the designed compressive strength is less than the preset compressive strength, or when any one of the total carbon emissions and the total energy consumption does not meet the corresponding design requirements, the material design quality is adjusted to obtain the material redesign quality; According to the stress-strain constitutive model and the material quality is redesigned, the LC 3 Adjusted compressive strength of recycled concrete and calculation of the LC based on the material redesign quality and the environmental impact parameters 3 The current total carbon emissions and the current total energy consumption of the recycled concrete are adjusted until the compressive strength is greater than or equal to the preset compressive strength, and the current total carbon emissions and the current total energy consumption respectively meet their corresponding design requirements.

3. The LC according to claim 1 or 2, which takes both strength and environmental impact into consideration. 3 The recycled concrete design method is characterized by: The stress-strain constitutive model is expressed as: x=e / e p ,y=σ / σ p ; Where x is the strain ratio, ε is the strain, and ε p is the peak strain, y is the stress ratio, σ is the stress, σ p is the peak stress, a and b are constants.

4. The LC according to claim 1 that takes both strength and environmental impact into consideration 3 The recycled concrete design method is characterized by: The constructed LC 3 The stress-strain constitutive model of recycled concrete includes: Get LC 3 Test data of recycled concrete, wherein the test data includes 3 LC made under substitution rate and recycled aggregate substitution rate 3 Peak strain and compressive strength of recycled concrete; Determining model parameters according to the test data; According to the model parameters, LC 3 Stress-strain constitutive model of recycled concrete.

5. The LC according to claim 3 that takes both strength and environmental impact into consideration 3 The recycled concrete design method is characterized by: The LC is obtained according to the stress-strain constitutive model and the material design quality. 3 The design compressive strength of recycled concrete includes: According to the material design quality, determine the LC 3 LC of recycled concrete 3 Design replacement rate; According to the stress-strain constitutive model and the LC 3 Design substitution rate and calculate the LC 3 Design compressive strength of recycled concrete.

6. The LC according to claim 1 that takes both strength and environmental impact into consideration 3 The recycled concrete design method is characterized by: The environmental impact parameters include the LC 3 Carbon emission and energy consumption per unit mass of various materials in recycled concrete; The LC is calculated based on the material design quality and the environmental impact parameters. 3 The total carbon emissions and energy consumption of recycled concrete include: According to the LC 3 The material design mass of various materials in recycled concrete and the corresponding carbon emission values ​​are used to calculate the LC 3 Total carbon emissions from recycled concrete; According to the LC 3 The material design mass of various materials in recycled concrete and the corresponding energy consumption values ​​are used to calculate the LC 3 Total energy consumption of recycled concrete.

7. The LC according to claim 6, which takes both strength and environmental impact into consideration 3 The recycled concrete design method is characterized by: The design requirements include a total carbon emission threshold corresponding to the total carbon emission and a total energy consumption threshold corresponding to the total energy consumption; when the total carbon emission and the total energy consumption meet their respective corresponding design requirements, the material design quality is used as the material target quality, specifically including: Obtaining a total carbon emission threshold and a total energy consumption threshold corresponding to the material design quality; If the total carbon emission is less than or equal to the total carbon emission threshold, and the total energy consumption is less than or equal to the total energy consumption threshold, the material design quality is used as the material target quality.

8. An LC that takes both strength and environmental impact into account 3 The recycled concrete design system is characterized by: The LC that takes into account both strength and environmental impact 3 The recycled concrete design system includes: Material quality design acquisition module, used to obtain LC 3 Material design quality and environmental impact parameters of various materials in recycled concrete; compressive strength and environmental impact calculation modules for building LC 3 The stress-strain constitutive model of recycled concrete is obtained according to the stress-strain constitutive model and the material design quality. 3 The design compressive strength of recycled concrete is calculated based on the material design quality and the environmental impact parameters. 3 Total carbon emissions and total energy consumption of recycled concrete; A material quality determination module is used to use the material design quality as the material target quality when the design compressive strength is greater than or equal to the preset compressive strength, and the total carbon emission and the total energy consumption meet the corresponding design requirements respectively, so as to prepare the LC according to the material target quality. 3 Recycled concrete.

9. A terminal, characterized in that: The terminal includes: a memory, a processor, and an LC system that takes both strength and environmental impact into consideration and is stored in the memory and can be run on the processor. 3 Recycled concrete design procedure, LC that takes into account both strength and environmental impact 3 When the recycled concrete design program is executed by the processor, the LC that takes into account both strength and environmental impact as described in any one of claims 1 to 7 is realized. 3 Steps in the recycled concrete design methodology.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores an LC having both strength and environmental impact taken into consideration. 3 Recycled concrete design procedure, LC that takes into account both strength and environmental impact 3 When the recycled concrete design program is executed by the processor, the LC that takes into account both strength and environmental impact as described in any one of claims 1 to 7 is realized. 3 Steps in the recycled concrete design methodology.

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