Comprehensive evaluation method for macro-micro coupling compatibility of normal-temperature cured resin asphalt

Abstract

The invention discloses a comprehensive evaluation method for macro-micro coupling compatibility of normal-temperature cured resin asphalt, which comprises the following steps of: acquiring a plurality of macro-micro indexes of the normal-temperature cured resin asphalt through a viscosity test, fluorescence microscope observation, a tensile test and dynamic thermomechanical analysis, and performing consistency analysis on the indexes before and after curing by adopting a Kendall rank correlation coefficient. The method comprises the following steps: screening out key indexes, carrying out weighting treatment on each sub-index by combining an entropy weight TOPSIS method, calculating the relative proximity of the normal-temperature cured resin asphalt, dividing compatibility grades, and carrying out pavement performance test on a mixture obtained by mixing a liquid resin asphalt mixture and aggregate which meet requirements to verify an evaluation result. According to the method, coupling analysis of microscopic phase state parameters and macroscopic performance indexes is innovatively realized, the problems that a traditional evaluation method is poor in applicability and the result deviates from the actual performance are solved, the comprehensive evaluation accuracy of the asphalt compatibility is greatly improved, and the engineering application efficiency and the quality control level are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of road engineering materials and performance evaluation thereof, and particularly relates to a macro-micro coupling compatibility comprehensive evaluation method for normal-temperature curing resin asphalt. BACKGROUND

[0002] China's highways have fully entered the "maintenance era", and more than 99% of the highway mileage needs to be maintained. It is urgent to develop green, efficient, low-carbon and durable maintenance materials. Normal-temperature curing resin asphalt materials are gradually applied to the maintenance engineering of small and medium span bridges and tunnels due to their normal-temperature construction, energy saving and emission reduction and excellent road performance. However, the compatibility of epoxy resin and asphalt in commercial normal-temperature curing resin asphalt materials still exists, and an unreasonable phase structure is easily formed, which leads to uneven curing and reduces the use performance.

[0003] At present, the evaluation of the compatibility of normal-temperature curing resin asphalt still mainly follows the evaluation system of traditional modified asphalt, and only starts from a single dimension such as basic performance, morphology characteristics or thermal rheology. However, normal-temperature curing resin asphalt belongs to a thermosetting system, and its chemical reaction mechanism and service behavior are completely different from those of traditional thermoplastic modified asphalt. The applicability of the existing evaluation method to the material is doubtful. At the same time, a single index cannot represent the overall compatibility, dispersion uniformity and comprehensive use performance of the material, which leads to the fact that even if the normal-temperature curing resin asphalt evaluated as "good compatibility" may still exhibit poor use performance in actual application. Therefore, it is urgent to build a multi-dimensional comprehensive evaluation method that can measure the overall compatibility, dispersion uniformity and use performance, so as to effectively improve the quality control level and service reliability of normal-temperature curing resin asphalt. SUMMARY

[0004] The purpose of the present application is to provide a macro-micro coupling compatibility comprehensive evaluation method for normal-temperature curing resin asphalt, so as to solve the problems of poor applicability and deviation of the results from the actual use performance of the traditional evaluation method.

[0005] To achieve the above-mentioned purpose, the technical solution provided by the present application is to provide a macro-micro coupling compatibility comprehensive evaluation method for normal-temperature curing resin asphalt, comprising the following steps: S1, for the liquid resin asphalt mixture, the indexes of initial viscosity, residence time and reaction rate are obtained through a viscosity test, and the index of polydispersity index is obtained through fluorescence microscope observation; After the liquid resin asphalt mixture is cured at normal temperature to obtain a cured product, the indexes of tensile strength, elongation at break and tensile toughness are obtained through a tensile test, and the indexes of glass transition temperature Tg peak number and Cole-Cole curve peak number are obtained through dynamic thermal mechanical analysis; S2, the relevant indexes of the liquid resin asphalt mixture obtained in step S1 and the relevant indexes of the normal temperature cured resin asphalt are sorted according to the advantages and disadvantages respectively, and the Kendall rank correlation of the relevant indexes of the liquid resin asphalt mixture and the relevant indexes of the normal temperature cured resin asphalt is calculated; S3, according to the Kendall rank correlation, screening the significant correlation indexes, and based on the significant correlation indexes, the relative closeness is calculated by the entropy weight TOPSIS method, and the compatibility grade is divided; S4, selecting the liquid resin asphalt mixture which has passed the normal temperature curing test and calculation and whose compatibility grade reaches the requirement as raw material, mixing the raw material with aggregate to obtain the mixture, and correcting the rating results of the mixture through road performance test.

[0006] In order to optimize the above technical scheme, the specific measures adopted also include: The calculation method of the reaction rate in step S1 is to obtain the viscosity-time curve obtained by viscosity test by Excel fitting according to the following formula:

[0007] Wherein, η 0 is the initial viscosity, v is the reaction rate at temperature T (°C), t is the residence time.

[0008] Further, the initial viscosity η 0 in step S1 is the viscosity value when the viscosity test is performed for one minute; the residence time t is the time for the viscosity of the liquid resin asphalt mixture to increase to , and the residence time t is at least 40 min.

[0009] The viscosity-time curve takes viscosity as the ordinate and the starting time as the abscissa, and every 3-6 minutes is a viscosity recording time point.

[0010] Further, the calculation method of the polydispersity index PDI in step S1 includes: Ten fluorescence microscope photos of the liquid resin asphalt mixture are randomly selected, the particle size distribution of the asphalt particles in the photos is counted, and the PDI of the asphalt particles in the normal temperature cured resin asphalt mixture is calculated by the following formula:

[0011]

[0012]

[0013] Wherein,D n the number average diameter of the bitumen in the continuous phase of the liquid resin bitumen mixture, D w the weight average diameter of the bitumen in the continuous phase of the liquid resin bitumen mixture, n i the particle size of the bitumen in the continuous phase of the liquid resin bitumen mixture D i the number of particles.

[0014] In the step S1, the IV type tensile dumbbell specimen is prepared, and the tensile test of the cured resin bitumen solidification product is carried out at room temperature by using the universal testing machine to obtain the tensile strength.

[0015] Further, the curves of the loss tangent, the storage modulus and the loss modulus of the sample obtained after the dynamic mechanical analysis test in the step S1 are obtained with the temperature, and the peak number of the loss tangent-temperature curve is taken as the peak number, and the Cole-Cole curve is drawn with the storage modulus and the loss modulus as the horizontal and vertical coordinates. T g the peak number, and the Cole-Cole curve is drawn with the storage modulus and the loss modulus as the horizontal and vertical coordinates.

[0016] The rank correlation between the mixture index and the solidification product index in the step S2 is expressed as:

[0017] wherein, τ the Kendall rank correlation coefficient, n the sample capacity, Σ i the total number of transpositions.

[0018] The performance characterization method of the mixture in the step S4 comprises: the Marshall stability test, the asphalt mixture 70°C rutting test, the asphalt mixture low-temperature beam bending test, the asphalt mixture immersion Marshall test and the freeze-thaw splitting test.

[0019] Further, the relative proximity of the normal-temperature cured resin bitumen is sorted from large to small in the step S3, and five levels of compatibility grades are divided according to the preset threshold interval: excellent [0.7, 1), good [0.5, 0.7), medium [0.4, 0.5), poor [0.3, 0.4) and bad [0, 0.3); the relative proximity of the normal-temperature cured resin bitumen less than 0.3, i.e. in the bad level, belongs to the normal-temperature cured resin bitumen not meeting the standard.

[0020] Compared with the prior art, the beneficial effects of the present application are: 1. The macro-micro index coupling mechanism is created, 12 data of micro phase state parameters (polydispersity index PDI, Cole-Cole curve peak number) and macro performance indexes (tensile strength, retention time, etc.) are synchronously collected, the key indexes are screened through Kendall rank correlation coefficient, and the scientificity and accuracy of evaluation are greatly improved.

[0021] 2. The application is closely related to the performance of the mixture, the mixture is used for road performance verification and compatibility rating of the normal temperature curing resin asphalt mixture, the compatibility rating reliability and effectiveness of the normal temperature curing resin asphalt are improved.

[0022] 3. The evaluation process of the application is standardized, the automatic calculation module embedded in Excel is developed, the five-level rating results can be output by only inputting test data, the non-professional personnel can also operate, the method has system universality, can be applied to similar materials through extended verification, and the engineering efficiency is significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The flow chart of the normal temperature curing resin asphalt macro-micro coupling compatibility comprehensive evaluation method of the application.

[0024] Figure 2 The viscosity-time curve of the application.

[0025] Figure 3 The Cole-Cole curve of the application.

[0026] Figure 4 The loss tangent-temperature curve of the application. DETAILED DESCRIPTION

[0027] The above content of the application will be further described in the form of specific embodiments, but this should not be understood as the scope of the above-mentioned subject matter of the application is limited to the following examples, and the technology realized based on the above-mentioned content of the application belongs to the scope of the application.

[0028] As shown in Figure 1 The application provides a normal temperature curing resin asphalt macro-micro coupling compatibility comprehensive evaluation method, comprising the following steps: S1, for the liquid resin asphalt mixture, the indexes of initial viscosity, retention time and reaction rate are obtained through viscosity test, and the index of polydispersity index is obtained through fluorescence microscope observation; After the liquid resin asphalt mixture is cured at normal temperature to obtain a cured product, the indexes of tensile strength, elongation at break and tensile toughness are obtained through tensile test, and the index of glass transition temperature is obtained through dynamic thermal mechanical analysis T gThe number of peaks and the number of peaks of the Cole-Cole curve; S2, the relevant indexes of the liquid resin asphalt mixture obtained in step S1 and the relevant indexes of the room temperature cured resin asphalt are respectively sorted according to advantages and disadvantages, and the Kendall rank correlation of the relevant indexes of the liquid resin asphalt mixture and the relevant indexes of the room temperature cured resin asphalt is calculated; S3, according to the Kendall rank correlation, screening the significant correlation indexes, and based on the significant correlation indexes, the relative closeness is calculated by the entropy weight TOPSIS method, and the compatibility grade is divided; S4, selecting the liquid resin asphalt mixture which has passed the room temperature curing test and calculation and has reached the required compatibility grade as raw material, and mixing it with aggregate to obtain the mixture, and testing the mixture by road performance to modify the rating results.

[0029] In some embodiments, the viscosity test test method is: first, the liquid resin asphalt mixture is placed in the sample cylinder of the Brookfield viscometer, then the rotation speed of the Brookfield viscometer is set to 50 rpm, and a 27# rotor is used. Then record the viscosity value every 5 minutes, when the test is started 2 hours or the viscosity of the liquid resin asphalt mixture exceeds 10 Pa·s, the test is ended. The final test result is the average value of 3 parallel experiments.

[0030] The reaction rate is obtained by fitting the viscosity-time curve obtained by the viscosity test according to the Roller formula of formula (1) by using Excel.

[0031] (1) Wherein, η 0 is the initial viscosity, v (min -1 ) is the reaction rate at temperature T (°C), t (min) is the residence time.

[0032] As preferred, the viscosity-time curve takes viscosity as the vertical coordinate, takes the starting time as the horizontal coordinate, and every five minutes is a viscosity recording time point.

[0033] The initial viscosity in step S1 η 0 is the viscosity value when the viscosity test is performed for one minute; the residence time t is the time for the liquid resin asphalt mixture to grow to , and the residence time t is at least 40 min; the viscosity-time curve takes viscosity as the vertical coordinate, takes the starting time as the horizontal coordinate, and every five minutes is a viscosity recording time point.

[0034] The specific operation steps of fluorescence microscope observation are as follows: after mixing the A and B components of the liquid resin asphalt mixture with different compatibility in proportion, dropping them on a glass slide, covering them with a cover glass, and observing them under a fluorescence microscope at room temperature, the magnification is 100x.

[0035] The polydispersity index PDI of the asphalt particles in the liquid resin asphalt mixture is obtained by the following steps: randomly selecting ten fluorescence microscope photos of the liquid resin asphalt mixture, counting the particle size distribution of the asphalt particles in the photos, and calculating the PDI of the asphalt particles in the liquid resin asphalt mixture by formula (2)-(4).

[0036] (2) (3) (4) wherein, D n and D w is the number average diameter and the weight average diameter of the asphalt in the continuous phase of the liquid resin asphalt mixture. n i is the number of particles with the particle size D i of the asphalt in the continuous phase of the liquid resin asphalt mixture. The PDI is a performance of the uniformity of dispersion of the liquid resin asphalt mixture, and the closer the value is to 0, the more uniform the overall dispersion of the material.

[0037] The specific test method of tensile test is as follows: according to ASTM D638-14, type IV tensile dumbbell test pieces are prepared. Secondly, a universal testing machine is used to perform tensile test on the sample at a speed of 10 mm / min at room temperature (25 °C). Five parallel tests are performed on each sample, and finally the tensile strength, elongation at break and tensile toughness of the room temperature cured resin asphalt cured product are obtained.

[0038] The specific test method of dynamic mechanical analysis is as follows: a room temperature cured resin asphalt cured product sample with a size of 30 mm x 10 mm x 2 mm is prepared and tested on a dynamic mechanical analyzer, using a single cantilever loading mode, a test frequency of 1 Hz, a test temperature range of -30 °C to 70 °C, and a heating rate of 3 °C / min. After the test, the curves of the tangent of loss, storage modulus and loss modulus of the sample with temperature are obtained.

[0039] As preferred, T g The peak number is the peak number of the tangent of loss-temperature curve.

[0040] The Cole-Cole curve in step S1 is a curve with storage modulus and loss modulus as the horizontal and vertical coordinates, wherein the storage modulus is taken as the logarithm and plotted as the horizontal coordinate.

[0041] The rank correlation between the mixture index and the cured product index in step S2 is represented by (5): (5) wherein, τ is the Kendall rank correlation coefficient, n is the sample size, Σ i is the total number of transpositions.

[0042] As preferred, the performance index ranking in step S2 adopts natural number marking, 1 representing the best performance, and the larger the number, the worse the performance.

[0043] As preferred, step S3 ranks the relative proximity of the ambient-cured resin asphalt from large to small, and divides the five-level compatibility grades according to the preset threshold interval: excellent [0.7, 1), good [0.5, 0.7), medium [0.4, 0.5), poor [0.3, 0.4), and poor [0, 0.3); the relative proximity of the ambient-cured resin asphalt less than 0.3, i.e. in the poor grade, belongs to the ambient-cured resin asphalt not meeting the standard.

[0044] In step S4, both the liquid resin asphalt mixture and the ambient-cured resin asphalt are referred to as binders, the liquid resin asphalt mixture is the binder state before curing, and the ambient-cured resin asphalt is the binder state after curing; the road performance test in step S4 uses the binder state before curing, i.e. the mixture formed after mixing the liquid resin asphalt mixture and the aggregate (stone).

[0045] As preferred, the test in step S4 tests the mechanical properties and durability of the mixture from high temperature, low temperature and water stability for road performance: the Marshall stability test is used to evaluate the load-carrying capacity and high-temperature rutting resistance of the mixture; the asphalt mixture 70°C rutting test is used to obtain the rutting depth and dynamic stability under the condition of 70°C, and is used to evaluate the high-temperature permanent deformation resistance; the asphalt mixture low-temperature beam bending test is used to measure the bending strength, fracture strain and stiffness modulus under the specified low temperature and loading rate, and is used to evaluate the low-temperature cracking resistance; the asphalt mixture immersion Marshall test and freeze-thaw splitting test: through the residual stability and freeze-thaw splitting strength ratio, etc., the water damage resistance and freeze-thaw damage resistance are evaluated.

[0046] The mixture test in step S4 is carried out in accordance with the “JTG E20 2011 Highway Engineering Asphalt and Asphalt Mixture Test Procedures”.

[0047] In a specific embodiment, three kinds of normal temperature curing resin asphalt with different compatibilities are selected: normal temperature curing resin asphalt with dichloropropane as asphalt solvent (dichloropropane group), normal temperature curing resin asphalt with trichloroethylene as asphalt solvent (trichloroethylene group), and normal temperature curing resin asphalt without adding compatibilizer (no compatibilizer group).

[0048] S1, the initial viscosity, residence time and reaction rate of the liquid resin asphalt mixture are obtained by viscosity test on the three groups of normal temperature curing resin asphalt; the polydispersity index of the mixture is obtained by observing the mixture under a fluorescence microscope; the liquid resin asphalt mixture is subjected to normal temperature curing to obtain a cured product, and the tensile strength, elongation at break and tensile toughness of the normal temperature curing resin asphalt cured product are obtained by tensile test; the glass transition temperature is obtained by dynamic mechanical analysis T g The number of peaks and the number of peaks of Cole-Cole curve; the obtained values of each index are shown in Table 1: Table 1 Basic performance indicators of normal temperature curing resin asphalt

[0049] S2, the initial viscosity, residence time, reaction rate, tensile strength, elongation at break, tensile toughness, T g The number of peaks and the number of peaks of Cole-Cole curve are sorted according to the performance, and the rank correlation between the mixture indicators and the cured product indicators is calculated; As a preferred, the basic performance indicators of the three groups of samples are ranked as 1 for the best performance and 3 for the worst performance. And the Kendall rank correlation coefficient between the mixture indicators and the cured product indicators is calculated, and the groups marked with "*" represent the groups with significant, and the results are shown in Table 2: Table 2 Consistency analysis results of indicators before and after curing of normal temperature curing resin asphalt

[0050] S3, the indicators with high correlation in step S2 are used as sub-indicators for compatibility comprehensive evaluation, the weight coefficients of each index are calculated by entropy weight TOPSIS method, the weighted decision matrix is constructed and the relative closeness is calculated, the relative closeness is sorted from large to small, and five levels of compatibility grades are divided according to the preset threshold interval: excellent [0.7, 1), good [0.5, 0.7), medium [0.4, 0.5), poor [0.3, 0.4), and poor [0, 0.3); the relative closeness of the normal temperature curing resin asphalt is less than 0.3, i.e. in the poor level, which belongs to the normal temperature curing resin asphalt that does not meet the requirements.

[0051] The compatibility condition grade division standard is shown in Table 3: Table 3 Compatibility condition grade classification standard

[0052] The TOPSIS comprehensive evaluation results of the compatibility of different ambient-curing resin asphalts are shown in Table 4: Table 4 Comprehensive evaluation results of the compatibility of ambient-curing resin asphalts

[0053] S4, the ambient-curing resin asphalt mixture with a compatibility condition grade meeting the standard in step S3 is mixed with aggregate to obtain a mixture, and road performance tests are performed to obtain the final compatibility ranking of the ambient-curing resin asphalt, thereby verifying and correcting the compatibility ranking obtained in step S3.

[0054] The ambient-curing resin asphalt mixture with a compatibility condition grade of “poor” or above in step S3, i.e., the dichloropropane group, is prepared into a mixture and subjected to road performance tests. The results are shown in Table 5: Table 5 Evaluation results of the road performance of the mixture

[0055] It is shown that the dichloropropane group has good road performance, verifying the correctness of the evaluation results obtained by the aforementioned method.

[0056] As Figure 2 shown, the viscosity-time curve of the liquid resin asphalt mixture has a horizontal coordinate of time after the start of the test and a vertical coordinate of viscosity value. Data is recorded every 5 minutes by a Brookfield viscometer (27# rotor, 50 rpm) until 2 hours or the viscosity exceeds 10 Pa·s, and the test is terminated. The curve is used to extract three key indicators: initial viscosity η0 (the viscosity value at 1 minute), residence time t (the time point at which the viscosity increases to 3 Pa·s, which is required to be ≥40 minutes), and reaction rate v. These parameters collectively represent the construction operability and chemical reaction activity of the resin asphalt mixture and are the basic basis for screening compatible materials.

[0057] As Figure 3As shown, the spectrum generated by dynamic thermomechanical analysis shows a significant difference in magnitude between the two parameters. To clearly display the peak shapes, the storage modulus was plotted logarithmically, with the logarithmic storage modulus as the x-axis and the loss modulus as the y-axis. The number of peaks directly reflects the phase homogeneity of the room-temperature curing resin asphalt: a single peak indicates that the resin and asphalt form a homogeneous phase (good compatibility), while multiple peaks reveal a phase separation structure (poor compatibility). This indicator is linked to macroscopic properties (such as tensile strength) through Kendall rank correlation analysis and serves as a core sub-indicator for evaluation using the entropy-weighted TOPSIS method, ultimately determining the material compatibility rating. For example, in the example, the dichloropropane group has a single peak and a rating of "excellent," while the group without compatibilizer has two peaks and a rating of "poor," confirming the reliability of the rating based on the Cole-Cole peak number.

[0058] like Figure 4 As shown, the curve of loss tangent (tanδ) versus temperature, obtained through dynamic thermomechanical analysis, is plotted with temperature on the x-axis and loss tangent value on the y-axis. This curve was obtained using a single cantilever loading mode at a frequency of 1 Hz, a heating rate of 3℃ / min, and a temperature range of -30℃ to 70℃. Each distinct peak corresponds to a glass transition temperature (Tg) characteristic point. The number of peaks directly reflects the phase homogeneity of the cured resin-asphalt at room temperature—a single peak indicates a homogeneous phase between the resin and asphalt (excellent compatibility), while multiple peaks reveal a phase-separated structure (poor compatibility). In this embodiment, the dichloropropane group exhibits a single peak (rated "excellent"), while the group without compatibilizer shows two peaks (rated "poor"). This result is consistent with the Cole-Cole curve analysis and macroscopic mechanical property evaluation, jointly verifying the reliability of using the number of Tg peaks as a key indicator for grading material compatibility.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, equivalent substitutions, and improvements made by those skilled in the art to the above embodiments without departing from the scope of the technical solution of the present invention, based on the technical essence of the present invention, shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A method for comprehensive evaluation of macro-micro coupling compatibility of ambient-cured resin asphalt, characterized in that, The method comprises the following steps: S1, obtaining indexes of the liquid resin asphalt mixture through a viscosity test: initial viscosity, retention time, and reaction rate, and obtaining indexes of the liquid resin asphalt mixture through fluorescence microscopy observation: polydispersity index; S2, sorting the related indexes of the liquid resin asphalt mixture and the related indexes of the normal-temperature cured resin asphalt obtained in step S1 according to advantages and disadvantages, and calculating Kendall rank correlation of the related indexes of the liquid resin asphalt mixture and the related indexes of the normal-temperature cured resin asphalt; S3, screening significant correlation indexes according to the Kendall rank correlation, and calculating relative closeness by entropy weight TOPSIS method based on the significant correlation indexes, and dividing compatibility grades; S4, selecting the liquid resin asphalt mixture with a compatibility grade reaching a requirement after the normal-temperature curing test and calculation as a raw material, mixing the raw material with aggregate to obtain a mixture, and correcting the rating results of the mixture through road performance testing. The calculation method of the reaction rate in step S1 is to fit the viscosity-time curve obtained through the viscosity test by using Excel according to the following formula:

2. The method according to claim 1, characterized in that: The viscosity-time curve takes viscosity as the ordinate and starting time as the abscissa, and each 3-6 minutes is a viscosity recording time point. wherein The calculation method of the polydispersity index PDI in step S1 is as follows: 0 is the initial viscosity, A plurality of fluorescence microscope photos of the liquid resin asphalt mixture are randomly selected, the particle size distribution of asphalt particles in the photos is counted, and the polydispersity index PDI of the asphalt particles in the normal-temperature cured resin asphalt mixture is calculated according to the following formula: is the reaction rate at temperature T (°C), t is the residence time.

3. The method according to claim 1, characterized in that: the initial viscosity in step S1 The calculation method of the tensile strength in step S1 is to prepare a type IV tensile dumbbell test piece, and a universal testing machine is used to perform a tensile test on the cured resin asphalt solidification at room temperature to obtain the tensile strength. 0 is the viscosity value at the time when the viscosity test is performed for one minute; the t retention time is the time for the viscosity of the liquid resin asphalt mixture to increase to t the retention time is at least 40 min.

4. The method according to claim 2, characterized in that: The Kendall rank correlation of the related indexes of the liquid resin asphalt mixture and the related indexes of the normal-temperature cured resin asphalt in step S2 is specifically represented as follows:

5. The method according to claim 1, characterized in that: The road performance testing of the mixture in step S4 comprises: Marshall stability test, asphalt mixture 70°C rutting test, asphalt mixture low-temperature beam bending test, asphalt mixture immersion Marshall test, and freeze-thaw splitting test. In step S3, the relative closeness is sorted from large to small, and the compatibility grades are divided according to a preset threshold interval. The relative closeness greater than or equal to 0.3 belongs to a compatibility grade reaching a requirement, and the relative closeness less than 0.3 does not meet the standard. wherein, D n the number average diameter of the bitumen in the continuous phase of the liquid resin bitumen mixture, D w the weight average diameter of the bitumen in the continuous phase of the liquid resin bitumen mixture, n i the particle size of the bitumen in the continuous phase of the liquid resin bitumen mixture D i the number of particles.

6. The method according to claim 1, characterized in that: ​ 7. The method according to claim 1, characterized in that: The curve of the tangent loss, the storage modulus and the loss modulus of the sample obtained after the dynamic mechanical analysis in the step S1 changes with temperature, the tangent loss-temperature curve is made, and the peak number of the tangent loss-temperature curve is taken as the peak number of the Cole-Cole curve. T g The peak number, and the Cole-Cole curve is drawn with the storage modulus and the loss modulus as the horizontal coordinate and the vertical coordinate respectively, and the peak number of the Cole-Cole curve is obtained.

8. The method according to claim 1, characterized in that: ​ wherein, ​ is the Kendall rank correlation coefficient, n is the sample size, Σ i is the total number of transpositions.

9. The method according to claim 1, characterized in that: ​ 10. The method according to claim 1, characterized in that: ​

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