CN110002793B - Ceramsite aggregate-doped epoxy asphalt mixture and preparation method thereof - Google Patents
Ceramsite aggregate-doped epoxy asphalt mixture and preparation method thereof Download PDFInfo
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- CN110002793B CN110002793B CN201910270525.XA CN201910270525A CN110002793B CN 110002793 B CN110002793 B CN 110002793B CN 201910270525 A CN201910270525 A CN 201910270525A CN 110002793 B CN110002793 B CN 110002793B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/14—Polyepoxides
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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Abstract
The invention discloses an epoxy asphalt mixture doped with ceramsite aggregate and a preparation method thereof, wherein the epoxy asphalt mixture is prepared from the following raw materials in parts by mass: 0.9-1.1 parts of epoxy resin of the epoxy asphalt A part, 3.3-6.8 parts of curing component of the epoxy asphalt B part, 41-89 parts of ceramsite aggregate, 11-59 parts of aggregate and 0.8-3.0 parts of mineral powder. The invention utilizes the characteristics of high ceramsite strength, large gap, small density, low heat conductivity coefficient and the like, and simultaneously adopts domestic epoxy asphalt as a cementing material, so that the mixing amount of the ceramsite can be increased to about 85 percent of that of the traditional mixture, and a series of defects of mixing the ceramsite into a common asphalt mixture and a common modified asphalt mixture are overcome.
Description
Technical Field
The invention belongs to the technical field of road building materials, and relates to an epoxy asphalt mixture doped with ceramsite aggregate and a preparation method thereof.
Background
China has permafrost regions with the highest altitude and the largest area in the world, wherein the permafrost is very sensitive to temperature change and basically in a stable state in a natural state, and when the permafrost is disturbed by human activities such as engineering construction and the like, the permafrost environment changes and a series of engineering problems are caused. After road engineering is built on permafrost, the original heat balance of the permafrost is destroyed due to the strong heat absorption capacity of the asphalt pavement and the sealing effect on water evaporation. In order to solve the problem of subgrade settlement and the diseases caused by the subgrade settlement, a thermal insulation layer laying technology is adopted at present mainly by protecting the thermal stability of frozen soil. The heat insulation layer is paved in a road structure of a frozen soil area, the heat of the upper part is prevented from entering the soil body of the lower roadbed by utilizing the low heat conduction resistance of the heat insulation material, the cold and heat change transmitted to the roadbed from the road structure is artificially cut off, and the temperature field of the roadbed is in a relatively thermal stable state within the service life of the road, so that the purpose of protecting frozen soil and eliminating the frozen injury of the road is achieved.
However, with the increasing global warming and the increasing traffic volume, the conventional thermal insulation layer technology cannot meet the requirements of thermal insulation, load bearing and economy, and a new thermal insulation layer technology is urgently needed to solve new problems. Road researchers have reduced the temperature inside the road surface by modifying the road surface material by adding thermal resistance materials, reducing the thermal conductivity of the road surface, and preventing the transfer of heat. The thermal resistance material is a material with small thermal conductivity and porosity, and is mainly applied to the thermal resistance material of roads, including ceramsite and ceramic. Compared with ceramics, the ceramsite has the advantages of high strength, large gaps, small density, low heat conductivity coefficient and the like in performance, and the ceramsite is doped into the pavement material, so that on one hand, the heat conductivity of the pavement material is reduced and the heat stability of frozen soil is protected due to the doping of the ceramsite; on the other hand, as the ceramsite is artificial aggregate and has rich raw material resources, the ceramsite aggregate is used for replacing crushed stone aggregate and is mixed into pavement materials, so that the current situation of shortage of stone materials in China can be relieved to a certain extent.
At present, patents on asphalt mixtures doped with ceramsite aggregates are CN101100360A, CN101219869A, CN102875058A and CN106007486A, and in the ceramsite asphalt concrete obtained by the technical scheme disclosed by the patents, firstly, the doping amount of the ceramsite is less than 60 percent, and the ceramsite asphalt concrete only just meets the pavement performance requirements and cannot meet the pavement performance requirements in frozen soil areas; secondly, the patents do not research and determine the thermal resistance of the ceramsite asphalt concrete; finally, the ceramsite and asphalt concrete in the patents are mainly applied to high-temperature areas, the forming and paving temperature is more than 170 ℃, and the ceramsite and asphalt concrete are difficult to realize in road engineering in frozen soil areas. In order to exert the advantages of the ceramsite and the prepared pavement material to the maximum extent, the pavement performance and heat resistance requirements of the pavement in frozen soil areas need to be met, and a modified asphalt with more excellent performance needs to be selected as a binder to be applied to a mixture. The asphalt mixture mixed by the epoxy asphalt has the characteristics of high strength, good toughness, excellent fatigue resistance, temperature stability, corrosion resistance and the like, CN101767958A adopts light aggregate and the epoxy asphalt to combine to prepare the high-performance light epoxy asphalt concrete, the application range of the high-performance light epoxy asphalt concrete is mainly a large-span bridge, so the patent has higher requirements on the performance indexes of the adopted light aggregate, namely the density grade is 600-1100, the particle size range is 0-5 mm and 5-10 mm, and the cylinder pressure strength is more than or equal to 6.5 MPa. Therefore, the epoxy asphalt and the ceramsite aggregate are combined, the epoxy asphalt and the ceramsite aggregate are applied to road pavements in frozen soil areas, the heat insulation performance of the epoxy asphalt and the ceramsite aggregate is exerted on the basis of meeting the road performance, heat conduction to a roadbed is reduced, the heat stability of the roadbed and the frozen soil is protected, and the epoxy asphalt and the ceramsite aggregate have bright application prospects and wide application ranges.
Disclosure of Invention
Aiming at the problems, the invention provides an epoxy asphalt mixture doped with ceramsite aggregate and a preparation method thereof, and the heat insulation type pavement material aims at preventing heat from being transferred to a frozen soil layer by virtue of heat insulation performance, maintaining the heat stability of the frozen soil layer, preventing and treating road diseases in a frozen soil area, simultaneously considering a large amount of application of waste ceramsite on the basis of not reducing the road performance of a pavement mixture, achieving the purposes of energy conservation and environmental protection and meeting the requirements of sustainable development.
In order to achieve the purpose, the asphalt mixture of the invention adopts the epoxy asphalt as the binder. The epoxy asphalt forms a stable space network structure through the curing reaction of the part A epoxy resin and the part B curing component, is insoluble in any solvent, and continuously increases in viscosity along with the chemical reaction until the curing reaction is finished to form gel, so that the formed mixture has more excellent self-strength, high-temperature stability and low-temperature crack resistance, and can compensate the overall performance reduction caused by insufficient aggregate strength to a certain extent. Meanwhile, the adhesiveness of the epoxy asphalt with the ceramsite aggregate is enhanced, the ceramsite aggregate doped in the mixture can be greatly increased, the heat-insulating property of the thermal resistance type pavement material is favorably improved, and the thermal stability of the frozen soil is more effectively protected.
The technical scheme adopted by the invention is as follows:
an epoxy asphalt mixture doped with ceramsite aggregate is prepared from the following raw materials in parts by mass: 0.9-1.1 parts of epoxy resin of the epoxy asphalt A part, 3.3-6.8 parts of curing component of the epoxy asphalt B part, 41-89 parts of ceramsite aggregate, 11-59 parts of aggregate and 0.8-3.0 parts of mineral powder.
Preferably, the epoxy resin of the epoxy asphalt A component is bisphenol A type epoxy resin E-51, and the curing agent of the epoxy asphalt B component is long-carbon-chain anhydride type curing agent, 70# base asphalt or 90# base asphalt.
As a preferable technical scheme, the mass part ratio of the aggregate is in accordance with continuous density gradation, and the continuous density gradation is selected from one of AC-20, AC-16, AC-13 and AC-10.
As a preferred technical scheme, the ceramsite aggregate has the density grade of 200-600 kg/m and the particle size range of 0-20mm, is mixed according to the mixing proportion to replace mineral aggregates with one grade or multiple grades of the corresponding particle size ranges in four grades of AC-20, AC-16, AC-13 and AC-10, and does not change initial grade after the replacement is finished.
As a preferred technical scheme, the aggregate is basalt aggregate or limestone aggregate.
As a preferable technical scheme, the mineral powder is limestone powder.
The invention adopts another technical scheme that the preparation method of the ceramsite aggregate-doped epoxy asphalt mixture is characterized by comprising the following steps of:
(1) preheating the basalt aggregate, the mineral powder and the ceramsite aggregate which are determined according to the design gradation;
(2) preheating the epoxy resin of the epoxy asphalt A part and the curing component of the epoxy asphalt B part;
(3) mixing the ceramsite aggregate and the basalt aggregate obtained by the treatment in the step (1);
(4) heating the epoxy asphalt B part curing component obtained by the treatment of the step (2) to the reaction temperature of 115-140 ℃, mixing the melted epoxy asphalt A part epoxy resin with the epoxy asphalt B part curing component in proportion, stirring the mixture obtained by the treatment of the step (3) for not less than 20s, then putting the mineral powder obtained by the step (1), and continuously stirring for not less than 30s to obtain the epoxy asphalt mixture doped with the ceramsite aggregate.
As an optimal technical scheme, the preheating treatment temperature in the step (1) is 115-140 ℃, and the preheating time is 2-3 hours.
As a preferred technical scheme, the preheating treatment temperature in the step (2) is 115-140 ℃.
As a preferred technical scheme, the stirring in the step (3) is dry stirring, the time is not less than 10s, and the temperature is 115-140 DEG C
The invention has the beneficial effects that:
the invention uses the ceramsite aggregate to replace mineral aggregate with corresponding grain diameter by taking fixed mineral aggregate gradation, compared with common asphalt mixture and common modified asphalt mixture with the same amount of ceramsite aggregate, the invention can increase the amount of the ceramsite aggregate to about 85 percent of the mixture. Meanwhile, due to the high-content ceramsite aggregate in the mixture, the mixture has the following two advantages in functionality:
(1) the heat insulation performance is excellent, and the heat stability of the bottom frozen soil area is maintained;
(2) the quality of the surface layer is reduced, and the pressure of the weight of the pavement on the frozen soil layer is relieved.
The thermal resistance epoxy asphalt mixture doped with the ceramsite aggregate provided by the invention is beneficial to treating a large amount of fired waste ceramsite generated in production and life, simultaneously relieves the shortage of stone exploitation at present, and accords with the energy-saving and environment-friendly concept.
The epoxy asphalt mixture doped with the ceramsite aggregate and the preparation method thereof have the advantages of simple preparation process, convenience in operation and lower preparation cost, are suitable for asphalt pavement of various grades of highways in cold and high-altitude frozen soil areas, and have higher social value and economic value.
Drawings
FIG. 1 is a schematic diagram of a test system used in the indoor illumination radiation test process of examples 1-4 of the present invention.
Detailed Description
The present invention is further illustrated by the following specific examples, which are not intended to limit the scope of the present invention, and modifications, equivalent variations and modifications made to the above examples according to the technical spirit of the present invention are within the technical scope of the present invention.
Example 1
(1) Material preparation
The epoxy asphalt mixture doped with the ceramsite aggregate is prepared from 0.9 part of epoxy resin (origin: Yangzhou Zhongjiang materials technology Co., Ltd.) of epoxy asphalt A, 6.8 parts of curing component (origin: Shanxi Hua Luxiang traffic technology Co., Ltd.) (No. 70 matrix asphalt) of B, 89 parts of ceramsite aggregate (origin: Henan Meisaike ceramsite Co., Ltd.), 24 parts of basalt and 3.0 parts of mineral powder in parts by mass. For convenience of comparative analysis, SBS modified asphalt is used for road performance comparison, the mass portion of the SBS modified asphalt is 7.6, and the basalt aggregate and the ceramsite aggregate adopted by the SBS modified asphalt are consistent with that of the epoxy asphalt pavement material doped with the ceramsite aggregate.
(2) Preparation method
Step 1: weighing ceramsite aggregate, basalt aggregate and mineral powder according to a ratio, and preheating the aggregates at 115-140 ℃ for 2-3 hours;
step 2: preheating epoxy resin of the epoxy asphalt A part and curing components of the epoxy asphalt B part at 115-140 ℃;
and step 3: mixing the preheated aggregates (basalt aggregates and ceramsite aggregates) for at least 10s at 115-140 ℃ to obtain a mixture;
and 4, step 4: heating the preheated epoxy asphalt B part curing component to 115-140 ℃, fully mixing the preheated epoxy asphalt A part epoxy resin and the epoxy asphalt B part curing component according to the proportion at the reaction temperature of 115-140 ℃, and uniformly stirring to obtain the prepared epoxy asphalt;
and 5: and (3) mixing the prepared epoxy asphalt material with the mixture obtained by the treatment in the step (3), mixing for not less than 20s, then putting the mineral powder obtained in the step (1), and continuously mixing for not less than 30s to obtain the epoxy asphalt mixture mixed with the ceramsite aggregate.
The preparation method of the comparative example SBS modified asphalt mixture comprises the following steps:
step 1: weighing ceramsite aggregate, basalt aggregate and mineral powder according to a ratio, and preheating the aggregates at the preheating temperature of 170-180 ℃ for 2-3 hours;
step 2: mixing the ceramsite aggregate and the basalt aggregate obtained by the treatment in the step (1), wherein the dry mixing time is not less than 10s, and the mixing temperature is 115-140 ℃, so as to obtain a mixture;
and step 3: weighing SBS modified asphalt according to the proportion, preheating, and obtaining SBS modified asphalt when the preheating temperature reaches 175 ℃;
and 4, step 4: and (3) mixing the preheated SBS modified asphalt material with the mixture obtained by the step (2), mixing for not less than 20s, then putting the mineral powder obtained in the step (1), and continuously mixing for not less than 30s to obtain the SBS modified asphalt mixture doped with the ceramsite aggregate in the example.
(3) Evaluation of road Performance
The road performance of the prepared epoxy asphalt pavement material doped with the ceramsite aggregate and the SBS modified asphalt pavement material is shown in Table 1.
Table 1 example 1 pavement performance of epoxy asphalt mixture and SBS modified asphalt mixture doped with ceramsite aggregate
As can be seen from the experimental data in the table, the thermal resistance SBS modified asphalt mixture formed by mixing SBS modified asphalt with a large amount of ceramsite aggregate can not meet the requirements of a series of road performances of JTG F40-2004 highway asphalt pavement construction technical specification, and the road performances of the thermal resistance epoxy asphalt mixture of the invention, such as strength, dynamic stability, water stability (residual stability) and the like, can meet the requirements of the specification.
Example 2
(1) Material preparation
The invention relates to an epoxy asphalt mixture doped with ceramsite aggregate, which comprises 1.1 parts of epoxy resin of part A of epoxy asphalt, 6.8 parts of curing component of part B (70 # matrix asphalt), 41 parts of ceramsite aggregate, 43 parts of limestone and 0.8 part of mineral powder by mass. The SBS modified asphalt with the mass portion of 6.5 parts is adopted for comparing the road performance, and both the limestone aggregate and the ceramsite aggregate adopted by the SBS modified asphalt are consistent with the epoxy asphalt pavement material doped with the ceramsite aggregate.
(2) Preparation method
The preparation method of the epoxy asphalt mixture doped with ceramsite aggregate and the SBS modified asphalt mixture in the embodiment is the same as that of the embodiment 1.
(3) Evaluation of road Performance
The road performance of the prepared epoxy asphalt pavement material doped with the ceramsite aggregate and the SBS modified asphalt pavement material is shown in Table 2. The experimental data in the table show that the pavement performances such as the strength, the dynamic stability, the water stability (residual stability) and the like of the thermal resistance epoxy asphalt mixture meet the standard requirements, and the performances are far greater than a series of performances of the thermal resistance SBS modified asphalt mixture.
Table 2 example 2 pavement performance table of epoxy asphalt mixture and SBS modified asphalt mixture doped with ceramsite aggregate
Example 3
The invention relates to an epoxy asphalt mixture doped with ceramsite aggregate, which comprises 1.0 part of epoxy resin of epoxy asphalt A, 3.3 parts of curing component of epoxy asphalt B (90 # matrix asphalt), 58 parts of ceramsite aggregate, 59 parts of limestone and 2.6 parts of mineral powder by mass. The SBS modified asphalt is adopted for comparison of road performance, the mass part of the SBS modified asphalt is 5.8 parts, and both limestone aggregate and ceramsite aggregate adopted by the SBS modified asphalt are consistent with that of the epoxy asphalt pavement material doped with the ceramsite aggregate.
(2) Preparation method
The preparation method of the epoxy asphalt mixture doped with ceramsite aggregate and the SBS modified asphalt mixture in the embodiment is the same as that of the example 1.
(3) Evaluation of road Performance
The road performance of the prepared epoxy asphalt pavement material doped with the ceramsite aggregate and the SBS modified asphalt pavement material is shown in Table 3. The experimental data in the table show that the Marshall stability and the dynamic stability of the thermal resistance SBS modified asphalt mixture formed by mixing a large amount of ceramsite aggregate into SBS modified asphalt can not meet the requirements of JTG F40-2004 highway asphalt pavement construction technical specification, while the pavement performances of the thermal resistance epoxy asphalt mixture such as strength, dynamic stability, water stability (residual stability) and the like are superior to those of the thermal resistance SBS modified asphalt mixture and meet the specification requirements.
Table 3 example 3 pavement performance of epoxy asphalt mixture and SBS modified asphalt mixture doped with ceramsite aggregate
Example 4
(1) Material preparation
The invention relates to an epoxy asphalt mixture doped with ceramsite aggregate, which comprises, by mass, 0.9 part of epoxy resin of part A of epoxy asphalt, 4.3 parts of curing component of part B of epoxy asphalt (70 # matrix asphalt), 72 parts of ceramsite aggregate, 11 parts of basalt aggregate and 0.8 part of mineral powder. The preparation method of the raw materials and the mixture is the same as that of the example 1.
(2) Preparation method
The preparation method of the epoxy asphalt mixture doped with the ceramsite aggregate and the SBS modified asphalt mixture is the same as that of the embodiment 1.
(3) Evaluation of road Performance
The pavement properties of the prepared ceramsite aggregate-doped epoxy asphalt pavement material and SBS modified asphalt pavement material are shown in Table 4. The experimental data in the table show that the pavement performances such as the strength, the dynamic stability, the water stability (residual stability) and the like of the thermal resistance epoxy asphalt mixture meet the standard requirements, and the performances are far greater than a series of performances of the thermal resistance SBS modified asphalt mixture.
Table 4 example 4 pavement performance of epoxy asphalt mixture and SBS modified asphalt mixture doped with ceramsite aggregate
Example 5
The ceramsite aggregate-doped epoxy asphalt mixture comprises the following components in parts by mass: 1.1 parts of epoxy resin of part A of the epoxy asphalt, 3.9 parts of curing component of part B of the epoxy asphalt (90 # matrix asphalt), 63 parts of ceramsite aggregate, 59 parts of basalt aggregate and 3.0 parts of mineral powder. The preparation method of the epoxy asphalt mixture doped with the ceramsite aggregate and the thermal resistance SBS modified asphalt mixture is the same as that of the embodiment 1.
Example 6
The ceramsite aggregate-doped epoxy asphalt mixture comprises the following components in parts by mass: 1.1 parts of epoxy resin of part A of the epoxy asphalt, 3.9 parts of curing component of part B (70 # matrix asphalt), 85 parts of ceramsite aggregate, 26.9 parts of basalt aggregate and 3.9 parts of mineral powder. The preparation method of the epoxy asphalt mixture doped with the ceramsite aggregate and the thermal resistance SBS modified asphalt mixture is the same as that of the embodiment 1.
Example 7
The ceramsite aggregate-doped epoxy asphalt mixture comprises the following components in parts by mass: 1.0 part of epoxy resin of the part A of the epoxy asphalt, 3.9 parts of curing component of the part B of the epoxy asphalt (90 # matrix asphalt), 59 parts of ceramsite aggregate, 11 parts of basalt aggregate and 1.9 parts of mineral powder. The preparation method of the epoxy asphalt mixture doped with the ceramsite aggregate and the thermal resistance SBS modified asphalt mixture is the same as that of the embodiment 1.
The epoxy asphalt mixture doped with the ceramsite aggregate and the SBS modified asphalt mixture prepared in the examples 1, 2, 3 and 4 were subjected to a heat insulation performance evaluation test: firstly, the cooling and heat insulation effects of the thermal resistance epoxy asphalt mixture and the thermal resistance SBS modified asphalt mixture doped with the ceramsite aggregate are visually inspected through an indoor illumination radiation test, then the thermal conductivity coefficients of the epoxy asphalt mixture and the SBS modified asphalt mixture are tested, and the thermal resistance performance of the epoxy asphalt mixture doped with the ceramsite aggregate is contrastively analyzed, wherein the specific test process is as follows:
1. indoor illumination radiation test:
the test system adopted mainly consists of a radiation light source (1000W iodine tungsten lamp), a temperature sensor, a cotton rock and a temperature recorder (thermocouple sensor), as shown in figure 1.
The test procedure was as follows:
step 1: connecting a lamp tube of the iodine tungsten lamp above a lamp holder, connecting the anode and the cathode of the lamp tube with a voltage stabilizer by using a lead, and then installing the lamp holder above a test bed; regulating the voltage stabilizer to stabilize the output voltage at 220V; and calibrating the temperature sensor.
Step 2: the sample is placed under an iodine tungsten lamp, and heat preservation and insulation materials such as rock wool and the like are filled around the sample.
And step 3: 3-5 temperature sensors are respectively arranged at the top and the bottom of the sample, the positions of temperature measuring points on the surface of the sample are marked, and the temperature measuring positions on the upper surface and the lower surface of the sample are required to be in one-to-one correspondence.
And 4, step 4: and (3) opening a switch of the iodine-tungsten lamp, starting radiant heating on the sample for 4 hours, taking the average temperature value of five temperature measuring points as the temperature of the upper surface and the lower surface of the sample, and obtaining the test result shown in table 5.
TABLE 5 indoor illumination radiation test results
The indoor illumination radiation test result shows that the thermal resistance SBS modified asphalt mixture formed by mixing a large amount of ceramsite aggregate into SBS modified asphalt has poor thermal resistance, and the thermal resistance epoxy asphalt mixture can effectively prevent heat from being transferred downwards and has good thermal resistance.
2. And (3) testing the heat conductivity coefficient:
the test instrument selected a thermal exothermic thermal conductivity meter (model: HFM 436/3/1E), the test conditions were performed at room temperature of 20 ℃, the sample size was 305 × 100mm, the test time was 30min, and the test results are shown in Table 6.
TABLE 6 Heat conductivity test results
The high-content ceramsite and epoxy asphalt mixture has a visual heat insulation effect, a low heat conductivity coefficient and an obvious heat insulation effect, and proves that the prepared epoxy asphalt mixture doped with the ceramsite aggregate can be applied to the pavement of permafrost regions at high and cold altitudes, can effectively protect the thermal stability of the permafrost regions and reduce pavement diseases.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and modifications, equivalent variations and modifications made to the above examples according to the technical spirit of the present invention are within the scope of the present invention without departing from the technical spirit of the present invention.
Claims (4)
1. The epoxy asphalt mixture doped with the ceramsite aggregate is characterized by being prepared from the following raw materials in parts by mass: 0.9 part of epoxy asphalt A, 4.3 parts of epoxy asphalt B, cured components, 72 parts of ceramsite aggregate, 11 parts of basalt aggregate and 0.8 part of mineral powder;
the epoxy resin of the epoxy asphalt A part is bisphenol A type epoxy resin E-51, and the curing agent of the epoxy asphalt B part is long-carbon-chain anhydride type curing agent, 70# matrix asphalt or 90# matrix asphalt; the density grade of the ceramsite aggregate is 200-600 kg/m for carrying out dry harvest, and the grain size range is 0-20 mm;
the mineral powder is limestone powder;
the preparation method of the ceramsite aggregate-doped epoxy asphalt mixture comprises the following steps:
(1) preheating the basalt aggregate, the mineral powder and the ceramsite aggregate which are determined according to the design gradation;
(2) preheating the epoxy resin of the epoxy asphalt A part and the curing component of the epoxy asphalt B part;
(3) mixing the ceramsite aggregate and the basalt aggregate obtained by the treatment in the step (1) to obtain a mixture;
(4) and (3) heating the epoxy asphalt B part curing component obtained by the treatment in the step (2) to the reaction temperature of 115-140 ℃, mixing the preheated epoxy asphalt A part epoxy resin with the epoxy asphalt B part curing component in proportion, stirring the mixture obtained by the treatment in the step (3) for not less than 20s, then putting the mineral powder obtained in the step (1), and continuously stirring for not less than 30s to obtain the epoxy asphalt mixture doped with the ceramsite aggregate.
2. The ceramsite aggregate-doped epoxy asphalt mixture according to claim 1, wherein the preheating temperature in step (1) is 115-140 ℃, and the preheating time is 2-3 hours.
3. The ceramsite aggregate-doped epoxy asphalt mixture according to claim 1, wherein the preheating temperature in step (2) is 115-140 ℃.
4. The ceramsite aggregate-doped epoxy asphalt mixture according to claim 1, wherein in the step (3), the mixing is dry mixing for not less than 10s at a temperature of 115-140 ℃.
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