Wear-resistant rubber concrete material and preparation method thereof

Abstract

The invention discloses a wear-resistant rubber concrete material and a preparation method thereof, and belongs to the technical field of concrete materials. The wear-resistant rubber concrete material comprises a base material and water, the base material comprises the following raw materials in parts by mass: 60-100 parts of Portland cement, 10-30 parts of fly ash, 10-30 parts of slag powder, 10-30 parts of silica fume, 20-40 parts of river sand, 1.8-4 parts of a polycarboxylate water reducing agent, 1-2 parts of copper-plated steel fibers and 15-25 parts of modified rubber particles; the amount of water is determined according to a water-binder ratio of 0.18-0.2. Through the steps of rubber particle modification, material mixing and the like, the combination of the rubber particles and a concrete matrix is improved, so that the compressive strength and wear resistance of the concrete are further improved, and the rubber concrete with excellent performance is prepared.

Description

Technical Field

[0001] The invention belongs to the technical field of concrete materials, and in particular relates to a wear-resistant rubber concrete material and a preparation method thereof. Background Art

[0002] In the field of building materials, concrete is a basic and widely used material, and its performance improvement has always been a hot topic of research. In recent years, with the continuous improvement of environmental protection, durability and high performance requirements, traditional concrete materials have been difficult to meet the needs of specific projects. Especially in situations where it is necessary to withstand extreme conditions such as high stress, high wear and strong vibration, traditional concrete materials often show problems such as insufficient toughness and easy cracking. In order to solve the above problems, researchers began to explore the introduction of rubber particles into concrete to form rubberized concrete (Rubberized Concrete, abbreviated as RC). Rubberized concrete can not only effectively reduce environmental pollution by using recycled rubber particles, but also make concrete show good energy absorption and shock absorption performance due to the elastic properties of rubber particles. It can effectively absorb impact energy and reduce damage caused by earthquakes, traffic and mechanical vibrations.

[0003] However, the existing rubber concrete preparation technology still has some shortcomings. For example, the uneven distribution of rubber particles affects the overall performance of concrete; the preparation cycle is long, the required equipment and technology are relatively complex, and the cost is high. In terms of the mechanical properties of rubber concrete, although the addition of rubber particles can improve its toughness and crack resistance, the addition of rubber particles will also lead to a decrease in the compressive strength of concrete. Therefore, how to improve the compressive strength and wear resistance of concrete while ensuring its toughness and durability has become the focus of current research. Summary of the invention

[0004] In view of the above-mentioned prior art, the present invention provides a wear-resistant rubber concrete material and a preparation method thereof, which solves the problems of low strength and poor wear resistance in the existing rubber concrete material.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is: to provide a wear-resistant rubber concrete material, including a base material and water; the base material includes the following raw materials by weight: 60-100 parts of silicate cement, 10-30 parts of fly ash, 10-30 parts of slag powder, 10-30 parts of silica fume, 20-40 parts of river sand, 1.8-4 parts of polycarboxylate water reducer, 1-2 parts of copper-plated steel fiber, and 15-25 parts of modified rubber particles; the amount of water is determined according to the water-binder ratio of 0.18-0.2;

[0006] The modified rubber particles include first modified rubber particles and second modified rubber particles, which are obtained by modifying rubber particles with a particle size of 1 to 2 mm and rubber particles with a particle size of 2 to 4 mm with a modifier, respectively; the modifier includes nano-silica, MXene and a silane coupling agent;

[0007] The modified rubber particles are prepared by the following steps:

[0008] (1) Wash the rubber particles with clean water and dry them;

[0009] (2) dissolving the silane coupling agent in a solvent and stirring for 10 to 15 minutes to obtain a silane coupling agent solution;

[0010] (3) adding the rubber particles treated in step (1) to the silane coupling agent solution and stirring for 5 to 8 hours; then adding nano-silica and MXene and continuing stirring for 3 to 5 hours to obtain coupled rubber particles;

[0011] (4) treating the coupled rubber particles with microwaves at a microwave power of 500 to 600 W for a treatment time of 3 to 6 minutes to obtain modified rubber particles;

[0012] River sand includes medium sand with a fineness modulus of 2.3 to 3.0 and coarse sand with a fineness modulus of 3.1 to 3.7.

[0013] Based on the above technical solution, the present invention can also be improved as follows.

[0014] Furthermore, the usage ratio of rubber particles, nano-silica, MXene and silane coupling agent is 2-5:2-5:1-2:0.1-0.3.

[0015] Furthermore, the usage ratio of rubber particles, nano-silica, MXene and silane coupling agent is 3:3:1:0.2.

[0016] Furthermore, the silane coupling agent is silane coupling agent KH-550 or silane coupling agent KH-570.

[0017] Furthermore, in step (2), the stirring time is 12 min, the solvent is methanol or ethanol, and the concentration of the silane coupling agent solution is 1.6 wt %; in step (3), the stirring time after adding the rubber particles is 6 h; the stirring time after adding the nano-silica and MXene is 5 h; in step (4), the microwave power is 500 W, and the treatment time is 5 min.

[0018] The beneficial effect of the above-mentioned further technical scheme adopted in the present invention is that one end of the silane coupling agent is connected to nano-silica or MXene, and the other end is connected to the organic matrix of the rubber particles. The silane coupling agent can significantly improve the bonding between the rubber particles and the nano-silica, MXene and the surrounding organic matrix, and this bonding helps to improve the overall stability and durability of the modified rubber particles; after the obtained coupled rubber particles are subjected to microwave treatment, the molecular activity on the surface of the material is improved, and the compatibility and dispersibility between the components are further improved. The compressive and wear resistance of the wear-resistant rubber concrete material prepared using the modified rubber particles is significantly improved, and it also helps to improve its tear strength and tensile strength.

[0019] Furthermore, the length of the copper-plated steel fiber is 10-15 mm, and the diameter is 0.15-0.2 mm; the amount of medium sand and coarse sand is the same; the amount of the first modified rubber particles and the second modified rubber particles is 1-2:1.

[0020] Furthermore, the base material includes the following raw materials in parts by mass: 80 parts of silicate cement, 20 parts of fly ash, 20 parts of slag powder, 20 parts of silica fume, 30 parts of river sand, 2 parts of polycarboxylate water reducer, 2 parts of copper-plated steel fiber, and 20 parts of modified rubber particles; the water-cement ratio is 0.18.

[0021] Furthermore, the base material includes the following raw materials in parts by mass: 90 parts of silicate cement, 10 parts of fly ash, 30 parts of slag powder, 25 parts of silica fume, 40 parts of river sand, 3 parts of polycarboxylate water reducer, 2 parts of copper-plated steel fiber, and 24 parts of modified rubber particles; the water-cement ratio is 0.2.

[0022] Furthermore, the preparation method of the wear-resistant rubber concrete material comprises the following steps:

[0023] (1) Weighing each raw material by mass, dividing the copper-plated steel fiber into two parts, recorded as the first steel fiber and the second steel fiber;

[0024] (2) Mixing the medium sand, the first modified rubber particles, and the first steel fiber uniformly to obtain a first mixture; and mixing the coarse sand, the second modified rubber particles, and the second steel fiber uniformly to obtain a second mixture;

[0025] (3) Mix cement, fly ash, slag powder and silica fume to obtain a third mixture;

[0026] (4) stirring the first mixed material, the second mixed material and the third mixed material together;

[0027] (5) preparing a polycarboxylate water reducer solution with water, adding the solution to the material obtained in step (3), and stirring for 5 to 8 minutes to obtain a mixed slurry;

[0028] (6) After the mixed slurry is molded, demolded and cured, the wear-resistant rubber concrete material is obtained.

[0029] The beneficial effects of the present invention are as follows: the present invention selects silicate cement, fly ash, slag powder, silica fume, river sand, polycarboxylate water reducer, copper-plated steel fiber, rubber particles, nano-silica, MXene and silane coupling agent as raw materials, and prepares rubber concrete with excellent performance through steps such as rubber particle modification and material mixing. The four materials of silicate cement, fly ash, slag powder and silica fume constitute the main cementing system of concrete, and silicate cement provides the main source of strength of concrete; fly ash, slag powder and silica fume as mineral admixtures not only replace part of cement and reduce costs, but more importantly, they can undergo secondary hydration reaction with cement hydration products to generate more hydration products with higher strength, refine the pore structure inside the concrete, and improve the density and durability of the concrete. The addition of modified rubber particles improves the wear resistance of concrete, and also because of its elastic properties, it can absorb and disperse impact energy, further enhancing the crack resistance and durability of concrete. The modification of nano-silica and MXene enhances the bonding between the rubber particles and the concrete matrix, so that the modified rubber particles can be better dispersed in the concrete, while ensuring that the concrete material finally prepared has good compressive strength and wear resistance. In addition, in the process of preparing the wear-resistant rubber concrete material, the present invention reduces the occurrence of agglomeration by mixing river sand and rubber particles of similar particle sizes separately, making the mixture more uniform; medium sand and small rubber particles can fill the gaps between coarse sand and large rubber particles to form a more uniform mechanical structure, which helps to optimize the mechanical properties of concrete, form a tighter particle accumulation, and improve the density of concrete, which can not only enhance the strength of concrete, but also improve its durability and impermeability. DETAILED DESCRIPTION

[0030] The specific implementation modes of the present invention are described in detail below with reference to the embodiments.

[0031] Example 1

[0032] A wear-resistant rubber concrete material comprises a base material and water; the base material comprises the following raw materials in parts by weight: 80 parts of silicate cement, 20 parts of fly ash, 20 parts of slag powder, 20 parts of silica fume, 30 parts of river sand (including 15 parts of medium sand with a fineness modulus of 2.3-3.0 and 15 parts of coarse sand with a fineness modulus of 3.1-3.7), 2 parts of polycarboxylate water reducer (BRS standard polycarboxylate high-performance water reducer, Chongqing Borida Building Materials Co., Ltd.), 2 parts of copper-plated steel fiber, and 20 parts of modified rubber particles (including 10 parts of first modified rubber particles and 10 parts of second modified rubber particles); the copper-plated steel fiber has a length of 10-15 mm and a diameter of 0.15-0.2 mm;

[0033] The modified rubber particles are prepared by the following steps:

[0034] (1) Wash rubber particles with a particle size of 1 to 2 mm and a particle size of 2 to 4 mm with clean water and dry them;

[0035] (2) dissolving the silane coupling agent KH-550 in methanol and stirring for 12 minutes to obtain a silane coupling agent solution with a concentration of 1.6 wt%;

[0036] (3) adding the rubber particles treated in step (1) to the silane coupling agent solution respectively, stirring for 6 hours; then adding nano-silica and MXene, and continuing to stir for 5 hours to obtain first coupled rubber particles and second coupled rubber particles;

[0037] (4) treating the first coupled rubber particles and the second coupled rubber particles with microwaves at a microwave power of 500 W for 5 min to obtain first modified rubber particles (the particle size of the rubber particles is 1 to 2 mm) and second modified rubber particles (the particle size of the rubber particles is 2 to 4 mm);

[0038] The amount ratio of rubber particles, nano-silica, MXene and silane coupling agent used in the preparation process is 3:3:1:0.2;

[0039] The amount of water is determined based on a water-to-binder ratio of 0.18;

[0040] The wear-resistant rubber concrete material in this embodiment is prepared by the following steps:

[0041] (1) Weighing each raw material by mass, dividing the copper-plated steel fiber into two parts, recorded as the first steel fiber and the second steel fiber;

[0042] (2) Mixing the medium sand, the first modified rubber particles, and the first steel fiber uniformly to obtain a first mixture; and mixing the coarse sand, the second modified rubber particles, and the second steel fiber uniformly to obtain a second mixture;

[0043] (3) Mix cement, fly ash, slag powder and silica fume to obtain a third mixture;

[0044] (4) stirring the first mixed material, the second mixed material and the third mixed material together;

[0045] (5) preparing a polycarboxylate water reducer solution with water, adding the solution to the material obtained in step (3), and stirring for 6 minutes to obtain a mixed slurry;

[0046] (6) Place the mixed slurry into a mold, remove the mold after 1 day, and cure it for 28 days.

[0047] Example 2

[0048] A wear-resistant rubber concrete material comprises a base material and water, wherein the base material comprises the following raw materials in parts by weight: 90 parts of silicate cement, 10 parts of fly ash, 30 parts of slag powder, 25 parts of silica fume, 40 parts of river sand (including 20 parts of medium sand with a fineness modulus of 2.3-3.0 and 20 parts of coarse sand with a fineness modulus of 3.1-3.7), 3 parts of polycarboxylate water reducer (BRS standard polycarboxylate high-performance water reducer, Chongqing Bo Rui Da Building Materials Co., Ltd.), 2 parts of copper-plated steel fiber, and 24 parts of modified rubber particles (16 parts of first modified rubber particles and 8 parts of second modified rubber particles); the copper-plated steel fiber has a length of 10-15 mm and a diameter of 0.15-0.2 mm; and the preparation steps are as follows:

[0049] The modified rubber particles are prepared by the following steps:

[0050] (1) Wash rubber particles with a particle size of 1 to 2 mm and a particle size of 2 to 4 mm with clean water and dry them;

[0051] (2) dissolving the silane coupling agent KH-570 in ethanol and stirring for 10 min to obtain a silane coupling agent solution with a concentration of 1.6 wt %;

[0052] (3) adding the rubber particles treated in step (1) to the silane coupling agent solution and stirring for 8 hours; then adding nano-silica and MXene and continuing stirring for 3 hours to obtain first coupled rubber particles and second coupled rubber particles;

[0053] (4) treating the first coupled rubber particles and the second coupled rubber particles with microwaves at a microwave power of 500 W for 6 min to obtain first modified rubber particles (the particle size of the rubber particles is 1 to 2 mm) and second modified rubber particles (the particle size of the rubber particles is 2 to 4 mm);

[0054] The amount ratio of rubber particles, nano-silica, MXene and silane coupling agent used in the preparation process was 5:5:1:0.3;

[0055] The amount of water is determined based on a water-to-binder ratio of 0.2;

[0056] The wear-resistant rubber concrete material in this embodiment is prepared by the following steps:

[0057] (1) Weighing each raw material by mass, dividing the copper-plated steel fiber into two parts, recorded as the first steel fiber and the second steel fiber;

[0058] (2) Mixing the medium sand, the first modified rubber particles, and the first steel fiber uniformly to obtain a first mixture; and mixing the coarse sand, the second modified rubber particles, and the second steel fiber uniformly to obtain a second mixture;

[0059] (3) Mix cement, fly ash, slag powder and silica fume to obtain a third mixture;

[0060] (4) stirring the first mixed material, the second mixed material and the third mixed material together;

[0061] (5) preparing a polycarboxylate water reducer solution with water, adding the solution to the material obtained in step (3), and stirring for 5 minutes to obtain a ready-mixed slurry;

[0062] (6) The mixed slurry is molded and removed after 1 day. After standard curing for 28 days, the product is obtained.

[0063] Example 3

[0064] A wear-resistant rubber concrete material comprises a base material and water; the base material comprises the following raw materials in parts by weight: 60 parts of silicate cement, 30 parts of fly ash, 10 parts of slag powder, 30 parts of silica fume, 20 parts of river sand (including 10 parts of medium sand with a fineness modulus of 2.3-3.0 and 10 parts of coarse sand with a fineness modulus of 3.1-3.7), 1.8 parts of polycarboxylate water reducer (BRS standard polycarboxylate high-performance water reducer, Chongqing Bo Rui Da Building Materials Co., Ltd.), 1 part of copper-plated steel fiber, and 15 parts of modified rubber particles (10 parts of first modified rubber particles and 5 parts of second modified rubber particles); the length of the copper-plated steel fiber is 10-15 mm and the diameter is 0.15-0.2 mm; the preparation steps are as follows:

[0065] The modified rubber particles are prepared by the following steps:

[0066] (1) Wash rubber particles with a particle size of 1 to 2 mm and a particle size of 2 to 4 mm with clean water and dry them;

[0067] (2) dissolving the silane coupling agent KH-550 in methanol and stirring for 15 minutes to obtain a silane coupling agent solution with a concentration of 1.6 wt%;

[0068] (3) adding the rubber particles treated in step (1) to the silane coupling agent solution and stirring for 5 hours; then adding nano-silica and MXene and continuing stirring for 5 hours to obtain first coupled rubber particles and second coupled rubber particles;

[0069] (4) treating the first coupled rubber particles and the second coupled rubber particles with microwaves at a microwave power of 600 W for 3 min to obtain first modified rubber particles (the particle size of the rubber particles is 1 to 2 mm) and second modified rubber particles (the particle size of the rubber particles is 2 to 4 mm);

[0070] The amount ratio of rubber particles, nano-silica, MXene and silane coupling agent used in the preparation process is 2:2:2:0.1;

[0071] The amount of water is determined based on a water-to-binder ratio of 0.18;

[0072] The wear-resistant rubber concrete material in this embodiment is prepared by the following steps:

[0073] (1) Weighing each raw material by mass, dividing the copper-plated steel fiber into two parts, recorded as the first steel fiber and the second steel fiber;

[0074] (2) Mixing the medium sand, the first modified rubber particles, and the first steel fiber uniformly to obtain a first mixture; and mixing the coarse sand, the second modified rubber particles, and the second steel fiber uniformly to obtain a second mixture;

[0075] (3) Mix cement, fly ash, slag powder and silica fume to obtain a third mixture;

[0076] (4) stirring the first mixed material, the second mixed material and the third mixed material together;

[0077] (5) preparing a water-reducing agent solution by mixing a polycarboxylate water-reducing agent with water, and then adding the solution to the material obtained in step (3), stirring for 8 minutes, and obtaining a mixed slurry;

[0078] (6) The mixed slurry is molded and removed after 1 day. After standard curing for 28 days, the product is obtained.

[0079] Example 4

[0080] A wear-resistant rubber concrete material comprises a base material and water; the base material comprises the following raw materials in parts by weight: 100 parts of silicate cement, 20 parts of fly ash, 20 parts of slag powder, 10 parts of silica fume, 30 parts of river sand (including 15 parts of medium sand with a fineness modulus of 2.3-3.0 and 15 parts of coarse sand with a fineness modulus of 3.1-3.7), 4 parts of polycarboxylate water reducer (BRS standard polycarboxylate high-performance water reducer, Chongqing Bo Rui Da Building Materials Co., Ltd.), 2 parts of copper-plated steel fiber, and 25 parts of modified rubber particles (12.5 parts of first modified rubber particles and 12.5 parts of second modified rubber particles); the length of the copper-plated steel fiber is 10-15 mm and the diameter is 0.15-0.2 mm; the preparation steps are as follows:

[0081] The modified rubber particles are prepared by the following steps:

[0082] (1) Wash rubber particles with a particle size of 1 to 2 mm and a particle size of 2 to 4 mm with clean water and dry them;

[0083] (2) dissolving the silane coupling agent KH-550 in methanol and stirring for 12 minutes to obtain a silane coupling agent solution with a concentration of 1.6 wt%;

[0084] (3) adding the rubber particles treated in step (1) to the silane coupling agent solution respectively, stirring for 6 hours; then adding nano-silica and MXene, and continuing to stir for 5 hours to obtain first coupled rubber particles and second coupled rubber particles;

[0085] (4) treating the first coupled rubber particles and the second coupled rubber particles with microwaves at a microwave power of 500 W for 5 min to obtain first modified rubber particles (the particle size of the rubber particles is 1 to 2 mm) and second modified rubber particles (the particle size of the rubber particles is 2 to 4 mm);

[0086] The amount ratio of rubber particles, nano-silica, MXene and silane coupling agent used in the preparation process is 3:3:1:0.2;

[0087] The amount of water is determined based on a water-to-binder ratio of 0.18;

[0088] The wear-resistant rubber concrete material in this embodiment is prepared by the following steps:

[0089] (1) Weighing each raw material by mass, dividing the copper-plated steel fiber into two parts, recorded as the first steel fiber and the second steel fiber;

[0090] (2) Mixing the medium sand, the first modified rubber particles, and the first steel fiber uniformly to obtain a first mixture; and mixing the coarse sand, the second modified rubber particles, and the second steel fiber uniformly to obtain a second mixture;

[0091] (3) Mix cement, fly ash, slag powder and silica fume to obtain a third mixture;

[0092] (4) stirring the first mixed material, the second mixed material and the third mixed material together;

[0093] (5) preparing a polycarboxylate water reducer solution with water, adding the solution to the material obtained in step (3), and stirring for 6 minutes to obtain a mixed slurry;

[0094] (6) Place the mixed slurry into a mold, remove the mold after 1 day, and cure it for 28 days.

[0095] Comparative Example 1

[0096] A rubber concrete material comprises a base material and water; the base material comprises the following raw materials in parts by mass: 80 parts of silicate cement, 20 parts of fly ash, 20 parts of slag powder, 20 parts of silica fume, 30 parts of river sand (including 15 parts of medium sand with a fineness modulus of 2.3-3.0 and 15 parts of coarse sand with a fineness modulus of 3.1-3.7), 2 parts of polycarboxylate water reducer (BRS standard polycarboxylate high-performance water reducer, Chongqing Borida Building Materials Co., Ltd.), 2 parts of copper-plated steel fiber, 40 parts of rubber particles (20 parts of rubber particles with a particle size of 1-2 mm, 20 parts of rubber particles with a particle size of 2-4 mm); the length of the copper-plated steel fiber is 10-15 mm, and the diameter is 0.15-0.2 mm; the amount of water used is determined according to a water-cement ratio of 0.18;

[0097] The rubber concrete material in this comparative example is prepared by the following steps:

[0098] (1) Weighing each raw material by mass, dividing the copper-plated steel fiber into two parts, recorded as the first steel fiber and the second steel fiber;

[0099] (2) Mixing medium sand, rubber particles with a particle size of 1 to 2 mm, and the first steel fiber to obtain a first mixture; mixing coarse sand, rubber particles with a particle size of 2 to 4 mm, and the second steel fiber to obtain a second mixture;

[0100] (3) Mix cement, fly ash, slag powder and silica fume to obtain a third mixture;

[0101] (4) stirring the first mixed material, the second mixed material and the third mixed material together;

[0102] (5) preparing a polycarboxylate water reducer solution with water, adding the solution to the material obtained in step (3), and stirring for 6 minutes to obtain a mixed slurry;

[0103] (6) Place the mixed slurry into a mold, remove the mold after 1 day, and cure it for 28 days.

[0104] Comparative Example 2

[0105] A rubber concrete, compared with Example 1, no MXene is added during the rubber particle modification process, and the remaining steps are the same as Example 1.

[0106] Comparative Example 3

[0107] A rubber concrete material, the raw material dosage is the same as that in Example 1; the preparation steps of the modified rubber particles and the dosage of the modifier are the same as those in Example 1.

[0108] The rubber concrete material in this comparative example is prepared by the following steps:

[0109] (1) Weigh each raw material according to its mass fraction;

[0110] (2) mixing the medium sand, the coarse sand, the first modified rubber particles, the second modified rubber particles and the copper-plated steel fiber uniformly to obtain a first mixture;

[0111] (3) Mixing cement, fly ash, slag powder and silica fume to obtain a second mixture;

[0112] (4) stirring the first mixed material and the second mixed material together;

[0113] (5) preparing a polycarboxylate water reducer solution with water, adding the solution to the material obtained in step (3), and stirring for 6 minutes to obtain a mixed slurry;

[0114] (6) Place the mixed slurry into a mold, remove the mold after 1 day, and cure it for 28 days.

[0115] The concrete materials prepared in Examples 1 to 4 and Comparative Examples 1 to 4 were tested for performance according to the test methods in GB / T 50081-2019 "Standard for Test Methods for Physical and Mechanical Properties of Concrete" and GB / T 50080-2016 "Standard for Test Methods for Performance of Ordinary Concrete Mixtures", and the results are shown in Table 1.

[0116] Table 1 Statistical results of concrete performance test

[0117]

[0118] From the test results in Table 1, it can be seen that the wear-resistant rubber concrete materials prepared in Examples 1 to 4 have a compressive strength greater than 170 MPa and an impact and abrasion resistance greater than 156 h / (kg / m 2 ), the effects are significantly better than those of comparative examples 1 to 3, indicating that the wear-resistant rubber concrete material prepared by the present invention has good compressive strength and wear resistance.

[0119] Although the specific implementation of the present invention is described in detail in conjunction with the embodiments, it should not be understood as limiting the scope of protection of this patent. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still fall within the scope of protection of this patent.

Claims

1. A wear-resistant rubber concrete material, characterized in that: It includes base material and water; the base material includes the following raw materials in parts by weight: 60-100 parts of silicate cement, 10-30 parts of fly ash, 10-30 parts of slag powder, 10-30 parts of silica fume, 20-40 parts of river sand, 1.8-4 parts of polycarboxylate water reducer, 1-2 parts of copper-plated steel fiber, and 15-25 parts of modified rubber particles; the amount of water is determined according to a water-binder ratio of 0.18-0.2; The modified rubber particles include first modified rubber particles and second modified rubber particles, which are respectively obtained by modifying rubber particles with a particle size of 1 to 2 mm and rubber particles with a particle size of 2 to 4 mm with a modifier; the modifier includes nano-silica, MXene and a silane coupling agent; The modified rubber particles are prepared by the following steps: (1) washing the rubber particles with clean water and drying them; (2) dissolving the silane coupling agent in a solvent and stirring for 10 to 15 minutes to obtain a silane coupling agent solution; (3) adding the rubber particles treated in step (1) to the silane coupling agent solution and stirring for 5 to 8 hours; then adding the nano-silica and MXene and continuing stirring for 3 to 5 hours to obtain coupled rubber particles; (4) treating the coupled rubber particles with microwaves at a microwave power of 500 to 600 W for a treatment time of 3 to 6 minutes to obtain modified rubber particles; The river sand includes medium sand with a fineness modulus of 2.3 to 3.0 and coarse sand with a fineness modulus of 3.1 to 3.

7.

2. The wear-resistant rubber concrete material according to claim 1 is characterized in that: The usage ratio of the rubber particles, nano-silica, MXene and silane coupling agent is 2-5:2-5:1-2:0.1-0.

3.

3. The wear-resistant rubber concrete material according to claim 2 is characterized in that: The usage ratio of the rubber particles, nano-silica, MXene and silane coupling agent is 3:3:1:0.

2.

4. The wear-resistant rubber concrete material according to any one of claims 1 to 3, characterized in that: The silane coupling agent is silane coupling agent KH-550 or silane coupling agent KH-570.

5. The wear-resistant rubber concrete material according to claim 1, characterized in that: In the step (2), the stirring time is 12 minutes, the solvent is methanol or ethanol, and the concentration of the silane coupling agent solution is 1.6 wt%; in the step (3), the stirring time after adding the rubber particles is 6 hours; the stirring time after adding the nano-silica and MXene is 5 hours; in the step (4), the microwave power is 500 W and the treatment time is 5 minutes.

6. The wear-resistant rubber concrete material according to claim 1, characterized in that: The length of the copper-plated steel fiber is 10-15 mm, and the diameter is 0.15-0.2 mm; the dosage of the medium sand and the coarse sand is the same; the dosage of the first modified rubber particles and the second modified rubber particles is 1-2:

1.

7. The wear-resistant rubber concrete material according to claim 1, characterized in that: The base material includes the following raw materials in parts by weight: 80 parts of silicate cement, 20 parts of fly ash, 20 parts of slag powder, 20 parts of silica fume, 30 parts of river sand, 2 parts of polycarboxylate water reducer, 2 parts of copper-plated steel fiber, and 20 parts of modified rubber particles; The water-to-cement ratio is 0.

18.

8. The wear-resistant rubber concrete material according to claim 1, characterized in that: The base material includes the following raw materials in parts by weight: 90 parts of silicate cement, 10 parts of fly ash, 30 parts of slag powder, 25 parts of silica fume, 40 parts of river sand, 3 parts of polycarboxylate water reducer, 2 parts of copper-plated steel fiber, and 24 parts of modified rubber particles; The water-to-cement ratio is 0.

2.

9. The method for preparing the wear-resistant rubber concrete material according to any one of claims 1 to 8, characterized in that: The following steps are involved: (1) Weighing each raw material by mass, dividing the copper-plated steel fiber into two parts, recorded as the first steel fiber and the second steel fiber; (2) Mixing the medium sand, the first modified rubber particles, and the first steel fiber uniformly to obtain a first mixture; and mixing the coarse sand, the second modified rubber particles, and the second steel fiber uniformly to obtain a second mixture; (3) Mix cement, fly ash, slag powder and silica fume to obtain a third mixture; (4) stirring the first mixed material, the second mixed material and the third mixed material together; (5) preparing a polycarboxylate water reducer solution with water, adding the solution to the material obtained in step (3), and stirring for 5 to 8 minutes to obtain a mixed slurry; (6) After the mixed slurry is molded, demolded and cured, the wear-resistant rubber concrete material is obtained.

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