CN108178571B - High-strength pavement material and preparation method thereof - Google Patents
High-strength pavement material and preparation method thereof Download PDFInfo
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- CN108178571B CN108178571B CN201711334438.3A CN201711334438A CN108178571B CN 108178571 B CN108178571 B CN 108178571B CN 201711334438 A CN201711334438 A CN 201711334438A CN 108178571 B CN108178571 B CN 108178571B
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- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
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- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
- Carbon And Carbon Compounds (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a high-strength pavement material and a preparation method thereof, and relates to the technical field of building materials. The high-strength pavement material comprises the following components in parts by weight: 5-10 parts of petroleum asphalt; 4-8 parts of polar plant fiber; 1-5 parts of modified coal-based activated carbon; 10-15 parts of cement; 10-15 parts of epoxy resin; 10-20 parts of a curing agent; 1-5 parts of a reinforcing agent; 1-3 parts of a light stabilizer; 200-250 parts of a filler; 15-20 parts of water. According to the invention, petroleum asphalt, epoxy resin, a curing agent and a reinforcing agent are matched with each other to form a net-shaped three-dimensional polymer, a filler is enveloped in a net-shaped body, and polar plant fibers disperse structural stress and enhance the strength of a pavement; the modified coal-based activated carbon prevents the vegetable fibers from gathering together, enhances the dispersibility of the polar vegetable fibers, ensures that the pavement has the advantages of difficult deformation, high tensile strength, high breaking strength and high compressive strength, and simultaneously enhances the sulfuric acid corrosion resistance and the sodium hydroxide corrosion resistance of the pavement.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a high-strength pavement material and a preparation method thereof.
Background
In recent years, with the rapid development of national economy and road transportation industry, the rapid increase of traffic flow has higher and higher requirements on the quality of municipal roads and roads, and higher requirements on the mechanical strength and weather resistance of the road surface are also provided.
The invention discloses a normal temperature modified additive of road asphalt and a preparation method thereof in Chinese patent with publication number CN101074321A, which is prepared by processing 5-15 parts of high molecular polymer, 20-40 parts of filling oil, 35-70 parts of light distillate oil, 3-12 parts of tackifying resin, 1-3 parts of flame retardant, 0.1-0.5 part of cross-linking agent and the like through two steps.
Although the additive can improve the weather resistance and the temperature resistance of the asphalt pavement, the asphalt pavement is not high in self strength and is easy to generate diseases such as deformation, cracks, pits, looseness and the like along with the increase of the service time because the asphalt pavement belongs to a flexible pavement.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a high-strength pavement material which solves the problems by matching and using petroleum asphalt, epoxy resin, polar plant fiber and modified coal-based activated carbon and has the advantages of difficult deformation, high tensile strength, high breaking strength and high compressive strength.
In order to achieve the first purpose, the invention provides the following technical scheme:
a high-strength pavement material comprises the following components in parts by weight:
5-10 parts of petroleum asphalt;
4-8 parts of polar plant fiber;
1-5 parts of modified coal-based activated carbon;
10-15 parts of cement;
10-15 parts of epoxy resin;
10-20 parts of a curing agent;
1-5 parts of a reinforcing agent;
1-3 parts of a light stabilizer;
200-250 parts of a filler;
15-20 parts of water.
By the technical scheme, the petroleum asphalt has good water resistance and viscosity, is low in price, has good compatibility with resin, and is coated with the filler to enhance the structural strength among epoxy resin molecules by the chemical reaction of the curing agent and the epoxy resin to form a reticular three-dimensional polymer.
Because the asphalt has fluidity, the asphalt forms a uniform disorderly distributed state in concrete by adding the polar plant fibers, so that the structural stress is dispersed, and the strength of the pavement is further enhanced. Because the plant fibers have high-degree intramolecular hydrogen bonds, the plant fibers are gathered together and are not easy to break up during the intensive heating and mixing, so that the plant fibers cannot be uniformly dispersed in the petroleum asphalt and the epoxy resin, one end of the polar plant fibers is adsorbed by the activated carbon by adding the modified coal-based activated carbon, and the other end of the polar plant fibers extends into the petroleum asphalt and the epoxy resin, so that the dispersibility of the polar plant fibers is enhanced, and the strength of the pavement is further enhanced.
More preferably, the polar plant fiber includes any one of sisal fiber, ramie fiber, hemp fiber and jute fiber.
Through the technical scheme, compared with other plant fibers, the fibrilia has the advantages of tough texture, strong tensile force, corrosion resistance, friction resistance and low temperature resistance, and the mechanical strength of the pavement is enhanced.
More preferably, the preparation of the modified coal-based activated carbon comprises the following steps:
a. crushing the coal-based activated carbon to 100-150 meshes, cleaning, drying, stirring and soaking with a hydrochloric acid solution, performing suction filtration, cleaning with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon I;
b. stirring and dipping the dried activated carbon I with a sodium hydroxide solution, performing suction filtration, washing with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon II;
c. and roasting the dried activated carbon II at the temperature of 450-480 ℃ for 3-5 hours, and cooling to normal temperature after roasting to obtain the modified coal-based activated carbon.
According to the technical scheme, firstly, the activated carbon is crushed to increase the specific surface area, ash in the activated carbon is removed through hydrochloric acid treatment, the activated carbon is modified by hydrochloric acid and sodium hydroxide, holes are formed, expanded and new holes are created in the activated carbon, the surface geometry of the activated carbon becomes more uniform, a developed pore structure is formed, and the specific surface area and the pore volume of the activated carbon are increased. The active carbon is modified, and meanwhile, the acidic oxygen-containing functional group and the basic oxygen-containing functional group on the surface of the active carbon are increased, so that the adsorption capacity of the active carbon on polar or non-polar substances is enhanced. The high-temperature roasting has a hole expanding effect on the activated carbon, and further enhances the specific surface area of the activated carbon and the adsorption capacity of polar plant fibers.
More preferably, the curing agent is an acid anhydride curing agent or an amine curing agent.
According to the technical scheme, the curing agent and the epoxy resin are subjected to chemical reaction to form a net-shaped three-dimensional polymer, and the filler is enveloped in the net-shaped body to enhance the structural strength among epoxy resin molecules.
Further preferably, the reinforcing agent comprises at least one of polyvinyl chloride, polypropylene and carboxymethyl cellulose.
Through the technical scheme, the molecular chain of the reinforcing agent contains active groups capable of reacting with the high-molecular polymer, and the reinforcing agent can form a network structure, increase a part of flexible chains, reduce the brittleness of petroleum asphalt, increase the toughness, and does not influence other performances of a pavement material, so that the cracking resistance and the impact resistance of a pavement are improved.
More preferably, the light stabilizer comprises any one of benzotriazole, 2-hydroxy-4-n-octoxybenzophenone and methyl salicylate.
Through the technical scheme, the benzotriazole, benzophenone and salicylate light stabilizers can effectively absorb ultraviolet rays with the wavelength of 290-410nm and prevent or delay the photoaging process, so that the service life of the pavement material is prolonged.
More preferably, the filler includes any one of calcium carbonate, quartz sand, and silica fume.
Through the technical scheme, the mineral filler is used as aggregate, has the functions of supporting and improving the strength, the hardness and the wear resistance, and can reduce the using amount of epoxy resin and petroleum asphalt, reduce the cost and reduce the thermal expansion coefficient and the shrinkage rate.
The invention also aims to provide a preparation method of the high-strength pavement material, and the pavement poured by the method has the advantages of difficult deformation, high tensile strength, high breaking strength and high compressive strength.
In order to achieve the second purpose, the invention provides the following technical scheme:
a preparation method of a high-strength pavement material comprises the following steps:
step one, preparing polar plant fibers:
d. pulverizing one of sisal fiber, ramie fiber, hemp fiber, and jute fiber into 50-100 mesh, adding into stainless steel pot together with water, boiling, and filtering to obtain crude fiber;
e. soaking the crude fiber in 10wt% NaOH solution for 24-30 hr, adding acetic acid to regulate pH to neutrality, filtering and stoving;
f. soaking the dried crude fiber in 5wt% methyl chloride triethoxy silane methanol solution for 30-40 hours, filtering and drying to obtain polar plant fiber;
heating the petroleum asphalt to 110-130 ℃ to melt the petroleum asphalt, adding the polar plant fiber, the modified coal-based activated carbon and the epoxy resin, and uniformly stirring and mixing to obtain a mixture;
and step three, adding cement, a curing agent, a reinforcing agent, a light stabilizer, a filler and water into the mixture in a stirring state, and uniformly mixing to obtain the high-strength pavement material.
By adopting the technical scheme, the vegetable fiber is treated by alkali to saponify ester bonds among partial molecules of the vegetable fiber, the porosity of the vegetable fiber is increased, partial low molecular impurities such as pectin, lignin and semi-fiber in the vegetable fiber are dissolved to reduce the rotation angle of the microfiber, the molecular orientation is improved, the impurities on the surface of the vegetable fiber are removed, the surface of the vegetable fiber becomes rough, the bonding capability between the fiber and the interfaces of epoxy resin and petroleum asphalt is enhanced, and the alkali treatment makes the fiber fibrillate, namely the fiber bundle is split into smaller diameter, the length-diameter ratio is increased, and the effective contact surface area with a matrix is increased.
And then the chloromethyltriethoxysilane coupling agent and the plant fiber form a covalent bond to further enhance the adhesion and improve the compatibility of the plant fiber and the epoxy resin. If the coupling agent is too little, the surface of the filler is not completely coated, a good coupling molecular layer is difficult to form, and the ideal coupling and compatibilization effects cannot be achieved. Too much coupling agent is used to lead the coupling agent to be excessive, so that the fiber surface can be covered with too many coupling agent molecules to form a polymolecular layer, the interface structure between the filler and the epoxy resin and the petroleum asphalt is easy to be uneven, and other unreacted groups in the coupling agent can also generate adverse effects, thereby reducing the mechanical property of the pavement material.
In conclusion, the invention has the following beneficial effects:
(1) the petroleum asphalt as an adhesive has good compatibility with resin, the curing agent and the epoxy resin are subjected to chemical reaction to form a net-shaped three-dimensional polymer, the filler is enveloped in a net-shaped body, the structural strength among epoxy resin molecules is enhanced, and the polar plant fibers form a uniform disorderly distribution state in concrete, so that the structural stress is dispersed, and the pavement strength is further enhanced;
(2) by adding the modified coal-based activated carbon, one end of the polar plant fiber is adsorbed by the activated carbon, and the other end of the polar plant fiber extends into the petroleum asphalt and the epoxy resin, so that the plant fibers are prevented from being gathered together, the dispersibility of the polar plant fiber is enhanced, and the strength of the pavement is further enhanced;
(3) the molecular chain of the reinforcing agent contains active groups capable of reacting with the high molecular polymer, and the reinforcing agent can form a network structure, increase a part of flexible chains, reduce the brittleness of the petroleum asphalt, increase the toughness, and does not influence other performances of the pavement material, so that the cracking resistance and the impact resistance of the pavement are improved;
(4) the coal-based activated carbon is modified by hydrochloric acid and sodium hydroxide, holes are formed, expanded and new holes are created in the activated carbon, the specific surface area and the pore volume of the activated carbon are increased, and acidic oxygen-containing functional groups and alkaline oxygen-containing functional groups on the surface of the activated carbon are increased, so that the adsorption capacity of the activated carbon on polar or non-polar substances is enhanced, the adsorption capacity of the activated carbon on polar plant fibers is enhanced, the adhesion is further enhanced by forming covalent bonds with the plant fibers through a chloromethyltriethoxysilane coupling agent, and the compatibility of the plant fibers and epoxy resin is improved.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
Example 1: the high-strength pavement material comprises the following components in parts by weight as shown in Table 1, and is prepared by the following steps with reference to a process flow of FIG. 1:
step one, preparing modified coal-based activated carbon:
a. crushing coal-based activated carbon to 100 meshes, cleaning, drying, stirring and soaking with a hydrochloric acid solution, performing suction filtration, cleaning with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon I;
b. stirring and dipping the dried activated carbon I with a sodium hydroxide solution, performing suction filtration, washing with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon II;
c. roasting the dried activated carbon II at the temperature of 450 ℃ for 3 hours, and cooling to normal temperature after roasting to obtain modified coal-based activated carbon;
preparing polar plant fibers:
d. pulverizing sisal fiber into 50 mesh, adding into a stainless steel pot together with water, boiling, and filtering to obtain crude fiber;
e. soaking the crude fiber in 10wt% NaOH solution for 24 hr, adding acetic acid to regulate pH to neutrality, filtering and stoving;
f. soaking the dried crude fiber in 5wt% methyl chloride triethoxy silane methanol solution for 30 hours, filtering and drying to obtain polar plant fiber;
heating the petroleum asphalt to 110 ℃ to melt the petroleum asphalt, adding the polar plant fiber, the modified coal-based activated carbon and the epoxy resin, and uniformly stirring and mixing to obtain a mixture;
and step three, adding cement, a curing agent, a reinforcing agent, a light stabilizer, a filler and water into the mixture in a stirring state, and uniformly mixing to obtain the high-strength pavement material.
Wherein, the cement is road silicate cement, the epoxy resin is epoxy resin E-51, the anhydride curing agent can be maleic anhydride, and other materials are all commercial materials.
Examples 2 to 5: a high-strength pavement material is different from the pavement material in example 1 in that the components and the corresponding parts by weight are shown in Table 1.
TABLE 1 Components and parts by weight of examples 1-5
Example 6: a high-strength pavement material, which is different from the pavement material in the embodiment 1 in that sisal fibers are replaced by ramie fibers.
Example 7: a high-strength pavement material, which is different from that of example 1 in that sisal fibers are replaced with hemp fibers.
Example 8: a high-strength pavement material, which is different from example 1 in that sisal fibers are replaced with jute fibers.
Example 9: a high-strength pavement material is different from the material in the embodiment 1 in that an acid anhydride curing agent is replaced by an amine curing agent, and the amine curing agent can adopt ethylenediamine.
Example 10: a high-strength pavement material, which is different from that of example 1 in that polyvinyl chloride was replaced with polypropylene.
Example 11: a high-strength pavement material, which is different from that of example 1 in that polyvinyl chloride was replaced with carboxymethyl cellulose.
Example 12: a high-strength pavement material is different from the pavement material in the embodiment 1 in that benzotriazole is replaced by 2-hydroxy-4-n-octoxybenzophenone.
Example 13: a high-strength pavement material is different from the pavement material in the embodiment 1 in that methyl salicylate is used as benzotriazole.
Example 14: a high-strength pavement material, which is different from the pavement material in example 1 in that calcium carbonate is replaced by quartz sand.
Example 15: a high-strength pavement material, which is different from that of example 1 in that calcium carbonate is replaced by silica fume.
Example 16: a high-strength pavement material, which is different from that of example 1 in that it is prepared by the following steps:
step one, preparing modified coal-based activated carbon:
a. crushing the coal-based activated carbon to 125 meshes, cleaning, drying, stirring and soaking with a hydrochloric acid solution, performing suction filtration, cleaning with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon I;
b. stirring and dipping the dried activated carbon I with a sodium hydroxide solution, performing suction filtration, washing with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon II;
c. roasting the dried activated carbon II at the temperature of 450 ℃ for 3 hours, and cooling to normal temperature after roasting to obtain modified coal-based activated carbon;
preparing polar plant fibers:
d. pulverizing sisal fiber into 50 mesh, adding into a stainless steel pot together with water, boiling, and filtering to obtain crude fiber;
e. soaking the crude fiber in 10wt% NaOH solution for 24 hr, adding acetic acid to regulate pH to neutrality, filtering and stoving;
f. soaking the dried crude fiber in 5wt% methyl chloride triethoxy silane methanol solution for 30 hours, filtering and drying to obtain polar plant fiber;
heating the petroleum asphalt to 110 ℃ to melt the petroleum asphalt, adding the polar plant fiber, the modified coal-based activated carbon and the epoxy resin, and uniformly stirring and mixing to obtain a mixture;
and step three, adding cement, a curing agent, a reinforcing agent, a light stabilizer, a filler and water into the mixture in a stirring state, and uniformly mixing to obtain the high-strength pavement material.
Example 17: a high-strength pavement material, which is different from that of example 1 in that it is prepared by the following steps:
step one, preparing modified coal-based activated carbon:
a. crushing the coal-based activated carbon to 150 meshes, cleaning, drying, stirring and soaking with a hydrochloric acid solution, performing suction filtration, cleaning with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon I;
b. stirring and dipping the dried activated carbon I with a sodium hydroxide solution, performing suction filtration, washing with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon II;
c. roasting the dried activated carbon II at the temperature of 450 ℃ for 3 hours, and cooling to normal temperature after roasting to obtain modified coal-based activated carbon;
preparing polar plant fibers:
d. pulverizing sisal fiber into 50 mesh, adding into a stainless steel pot together with water, boiling, and filtering to obtain crude fiber;
e. soaking the crude fiber in 10wt% NaOH solution for 24 hr, adding acetic acid to regulate pH to neutrality, filtering and stoving;
f. soaking the dried crude fiber in 5wt% methyl chloride triethoxy silane methanol solution for 30 hours, filtering and drying to obtain polar plant fiber;
heating the petroleum asphalt to 110 ℃ to melt the petroleum asphalt, adding the polar plant fiber, the modified coal-based activated carbon and the epoxy resin, and uniformly stirring and mixing to obtain a mixture;
and step three, adding cement, a curing agent, a reinforcing agent, a light stabilizer, a filler and water into the mixture in a stirring state, and uniformly mixing to obtain the high-strength pavement material.
Example 18: a high-strength pavement material, which is different from that of example 1 in that it is prepared by the following steps:
step one, preparing modified coal-based activated carbon:
a. crushing coal-based activated carbon to 100 meshes, cleaning, drying, stirring and soaking with a hydrochloric acid solution, performing suction filtration, cleaning with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon I;
b. stirring and dipping the dried activated carbon I with a sodium hydroxide solution, performing suction filtration, washing with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon II;
c. roasting the dried activated carbon II at 465 ℃ for 3 hours, and cooling to normal temperature after roasting to obtain modified coal-based activated carbon;
preparing polar plant fibers:
d. pulverizing sisal fiber into 50 mesh, adding into a stainless steel pot together with water, boiling, and filtering to obtain crude fiber;
e. soaking the crude fiber in 10wt% NaOH solution for 24 hr, adding acetic acid to regulate pH to neutrality, filtering and stoving;
f. soaking the dried crude fiber in 5wt% methyl chloride triethoxy silane methanol solution for 30 hours, filtering and drying to obtain polar plant fiber;
heating the petroleum asphalt to 110 ℃ to melt the petroleum asphalt, adding the polar plant fiber, the modified coal-based activated carbon and the epoxy resin, and uniformly stirring and mixing to obtain a mixture;
and step three, adding cement, a curing agent, a reinforcing agent, a light stabilizer, a filler and water into the mixture in a stirring state, and uniformly mixing to obtain the high-strength pavement material.
Example 19: a high-strength pavement material, which is different from that of example 1 in that it is prepared by the following steps:
step one, preparing modified coal-based activated carbon:
a. crushing coal-based activated carbon to 100 meshes, cleaning, drying, stirring and soaking with a hydrochloric acid solution, performing suction filtration, cleaning with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon I;
b. stirring and dipping the dried activated carbon I with a sodium hydroxide solution, performing suction filtration, washing with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon II;
c. roasting the dried activated carbon II at 480 ℃ for 3 hours, and cooling to normal temperature after roasting to obtain modified coal-based activated carbon;
preparing polar plant fibers:
d. pulverizing sisal fiber into 50 mesh, adding into a stainless steel pot together with water, boiling, and filtering to obtain crude fiber;
e. soaking the crude fiber in 10wt% NaOH solution for 24 hr, adding acetic acid to regulate pH to neutrality, filtering and stoving;
f. soaking the dried crude fiber in 5wt% methyl chloride triethoxy silane methanol solution for 30 hours, filtering and drying to obtain polar plant fiber;
heating the petroleum asphalt to 110 ℃ to melt the petroleum asphalt, adding the polar plant fiber, the modified coal-based activated carbon and the epoxy resin, and uniformly stirring and mixing to obtain a mixture;
and step three, adding cement, a curing agent, a reinforcing agent, a light stabilizer, a filler and water into the mixture in a stirring state, and uniformly mixing to obtain the high-strength pavement material.
Example 20: a high-strength pavement material, which is different from that of example 1 in that it is prepared by the following steps:
step one, preparing modified coal-based activated carbon:
a. crushing coal-based activated carbon to 100 meshes, cleaning, drying, stirring and soaking with a hydrochloric acid solution, performing suction filtration, cleaning with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon I;
b. stirring and dipping the dried activated carbon I with a sodium hydroxide solution, performing suction filtration, washing with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon II;
c. roasting the dried activated carbon II at the temperature of 450 ℃ for 4 hours, and cooling to normal temperature after roasting to obtain modified coal-based activated carbon;
preparing polar plant fibers:
d. pulverizing sisal fiber into 50 mesh, adding into a stainless steel pot together with water, boiling, and filtering to obtain crude fiber;
e. soaking the crude fiber in 10wt% NaOH solution for 24 hr, adding acetic acid to regulate pH to neutrality, filtering and stoving;
f. soaking the dried crude fiber in 5wt% methyl chloride triethoxy silane methanol solution for 30 hours, filtering and drying to obtain polar plant fiber;
heating the petroleum asphalt to 110 ℃ to melt the petroleum asphalt, adding the polar plant fiber, the modified coal-based activated carbon and the epoxy resin, and uniformly stirring and mixing to obtain a mixture;
and step three, adding cement, a curing agent, a reinforcing agent, a light stabilizer, a filler and water into the mixture in a stirring state, and uniformly mixing to obtain the high-strength pavement material.
Example 21: a high-strength pavement material, which is different from that of example 1 in that it is prepared by the following steps:
step one, preparing modified coal-based activated carbon:
a. crushing coal-based activated carbon to 100 meshes, cleaning, drying, stirring and soaking with a hydrochloric acid solution, performing suction filtration, cleaning with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon I;
b. stirring and dipping the dried activated carbon I with a sodium hydroxide solution, performing suction filtration, washing with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon II;
c. roasting the dried activated carbon II at the temperature of 450 ℃ for 5 hours, and cooling to normal temperature after roasting to obtain modified coal-based activated carbon;
preparing polar plant fibers:
d. pulverizing sisal fiber into 50 mesh, adding into a stainless steel pot together with water, boiling, and filtering to obtain crude fiber;
e. soaking the crude fiber in 10wt% NaOH solution for 24 hr, adding acetic acid to regulate pH to neutrality, filtering and stoving;
f. soaking the dried crude fiber in 5wt% methyl chloride triethoxy silane methanol solution for 30 hours, filtering and drying to obtain polar plant fiber;
heating the petroleum asphalt to 110 ℃ to melt the petroleum asphalt, adding the polar plant fiber, the modified coal-based activated carbon and the epoxy resin, and uniformly stirring and mixing to obtain a mixture;
and step three, adding cement, a curing agent, a reinforcing agent, a light stabilizer, a filler and water into the mixture in a stirring state, and uniformly mixing to obtain the high-strength pavement material.
Example 22: a high-strength pavement material, which is different from that of example 1 in that it is prepared by the following steps:
step one, preparing modified coal-based activated carbon:
a. crushing coal-based activated carbon to 100 meshes, cleaning, drying, stirring and soaking with a hydrochloric acid solution, performing suction filtration, cleaning with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon I;
b. stirring and dipping the dried activated carbon I with a sodium hydroxide solution, performing suction filtration, washing with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon II;
c. roasting the dried activated carbon II at the temperature of 450 ℃ for 3 hours, and cooling to normal temperature after roasting to obtain modified coal-based activated carbon;
preparing polar plant fibers:
d. pulverizing sisal fiber into 80 mesh, adding into a stainless steel pot together with water, boiling, and filtering to obtain crude fiber;
e. soaking the crude fiber in 10wt% NaOH solution for 24 hr, adding acetic acid to regulate pH to neutrality, filtering and stoving;
f. soaking the dried crude fiber in 5wt% methyl chloride triethoxy silane methanol solution for 30 hours, filtering and drying to obtain polar plant fiber;
heating the petroleum asphalt to 110 ℃ to melt the petroleum asphalt, adding the polar plant fiber, the modified coal-based activated carbon and the epoxy resin, and uniformly stirring and mixing to obtain a mixture;
and step three, adding cement, a curing agent, a reinforcing agent, a light stabilizer, a filler and water into the mixture in a stirring state, and uniformly mixing to obtain the high-strength pavement material.
Example 23: a high-strength pavement material, which is different from that of example 1 in that it is prepared by the following steps:
step one, preparing modified coal-based activated carbon:
a. crushing coal-based activated carbon to 100 meshes, cleaning, drying, stirring and soaking with a hydrochloric acid solution, performing suction filtration, cleaning with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon I;
b. stirring and dipping the dried activated carbon I with a sodium hydroxide solution, performing suction filtration, washing with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon II;
c. roasting the dried activated carbon II at the temperature of 450 ℃ for 3 hours, and cooling to normal temperature after roasting to obtain modified coal-based activated carbon;
preparing polar plant fibers:
d. pulverizing sisal fiber into 100 mesh, adding into a stainless steel pot together with water, boiling, and filtering to obtain crude fiber;
e. soaking the crude fiber in 10wt% NaOH solution for 24 hr, adding acetic acid to regulate pH to neutrality, filtering and stoving;
f. soaking the dried crude fiber in 5wt% methyl chloride triethoxy silane methanol solution for 30 hours, filtering and drying to obtain polar plant fiber;
heating the petroleum asphalt to 110 ℃ to melt the petroleum asphalt, adding the polar plant fiber, the modified coal-based activated carbon and the epoxy resin, and uniformly stirring and mixing to obtain a mixture;
and step three, adding cement, a curing agent, a reinforcing agent, a light stabilizer, a filler and water into the mixture in a stirring state, and uniformly mixing to obtain the high-strength pavement material.
Example 24: a high-strength pavement material, which is different from that of example 1 in that it is prepared by the following steps:
step one, preparing modified coal-based activated carbon:
a. crushing coal-based activated carbon to 100 meshes, cleaning, drying, stirring and soaking with a hydrochloric acid solution, performing suction filtration, cleaning with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon I;
b. stirring and dipping the dried activated carbon I with a sodium hydroxide solution, performing suction filtration, washing with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon II;
c. roasting the dried activated carbon II at the temperature of 450 ℃ for 3 hours, and cooling to normal temperature after roasting to obtain modified coal-based activated carbon;
preparing polar plant fibers:
d. pulverizing sisal fiber into 50 mesh, adding into a stainless steel pot together with water, boiling, and filtering to obtain crude fiber;
e. soaking the crude fiber in 10wt% NaOH solution for 27 hr, adding acetic acid to regulate pH to neutrality, filtering and stoving;
f. soaking the dried crude fiber in 5wt% methyl chloride triethoxy silane methanol solution for 30 hours, filtering and drying to obtain polar plant fiber;
heating the petroleum asphalt to 110 ℃ to melt the petroleum asphalt, adding the polar plant fiber, the modified coal-based activated carbon and the epoxy resin, and uniformly stirring and mixing to obtain a mixture;
and step three, adding cement, a curing agent, a reinforcing agent, a light stabilizer, a filler and water into the mixture in a stirring state, and uniformly mixing to obtain the high-strength pavement material.
Example 25: a high-strength pavement material, which is different from that of example 1 in that it is prepared by the following steps:
step one, preparing modified coal-based activated carbon:
a. crushing coal-based activated carbon to 100 meshes, cleaning, drying, stirring and soaking with a hydrochloric acid solution, performing suction filtration, cleaning with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon I;
b. stirring and dipping the dried activated carbon I with a sodium hydroxide solution, performing suction filtration, washing with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon II;
c. roasting the dried activated carbon II at the temperature of 450 ℃ for 3 hours, and cooling to normal temperature after roasting to obtain modified coal-based activated carbon;
preparing polar plant fibers:
d. pulverizing sisal fiber into 50 mesh, adding into a stainless steel pot together with water, boiling, and filtering to obtain crude fiber;
e. soaking the crude fiber in 10wt% NaOH solution for 30 hr, adding acetic acid to regulate pH to neutrality, filtering and stoving;
f. soaking the dried crude fiber in 5wt% methyl chloride triethoxy silane methanol solution for 30 hours, filtering and drying to obtain polar plant fiber;
heating the petroleum asphalt to 110 ℃ to melt the petroleum asphalt, adding the polar plant fiber, the modified coal-based activated carbon and the epoxy resin, and uniformly stirring and mixing to obtain a mixture;
and step three, adding cement, a curing agent, a reinforcing agent, a light stabilizer, a filler and water into the mixture in a stirring state, and uniformly mixing to obtain the high-strength pavement material.
Example 26: a high-strength pavement material, which is different from that of example 1 in that it is prepared by the following steps:
step one, preparing modified coal-based activated carbon:
a. crushing coal-based activated carbon to 100 meshes, cleaning, drying, stirring and soaking with a hydrochloric acid solution, performing suction filtration, cleaning with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon I;
b. stirring and dipping the dried activated carbon I with a sodium hydroxide solution, performing suction filtration, washing with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon II;
c. roasting the dried activated carbon II at the temperature of 450 ℃ for 3 hours, and cooling to normal temperature after roasting to obtain modified coal-based activated carbon;
preparing polar plant fibers:
d. pulverizing sisal fiber into 50 mesh, adding into a stainless steel pot together with water, boiling, and filtering to obtain crude fiber;
e. soaking the crude fiber in 10wt% NaOH solution for 24 hr, adding acetic acid to regulate pH to neutrality, filtering and stoving;
f. soaking the dried crude fiber in 5wt% methyl chloride triethoxy silane methanol solution for 35 hours, filtering and drying to obtain polar plant fiber;
heating the petroleum asphalt to 110 ℃ to melt the petroleum asphalt, adding the polar plant fiber, the modified coal-based activated carbon and the epoxy resin, and uniformly stirring and mixing to obtain a mixture;
and step three, adding cement, a curing agent, a reinforcing agent, a light stabilizer, a filler and water into the mixture in a stirring state, and uniformly mixing to obtain the high-strength pavement material.
Example 27: a high-strength pavement material, which is different from that of example 1 in that it is prepared by the following steps:
step one, preparing modified coal-based activated carbon:
a. crushing coal-based activated carbon to 100 meshes, cleaning, drying, stirring and soaking with a hydrochloric acid solution, performing suction filtration, cleaning with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon I;
b. stirring and dipping the dried activated carbon I with a sodium hydroxide solution, performing suction filtration, washing with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon II;
c. roasting the dried activated carbon II at the temperature of 450 ℃ for 3 hours, and cooling to normal temperature after roasting to obtain modified coal-based activated carbon;
preparing polar plant fibers:
d. pulverizing sisal fiber into 50 mesh, adding into a stainless steel pot together with water, boiling, and filtering to obtain crude fiber;
e. soaking the crude fiber in 10wt% NaOH solution for 24 hr, adding acetic acid to regulate pH to neutrality, filtering and stoving;
f. soaking the dried crude fiber in 5wt% methyl chloride triethoxy silane methanol solution for 40 hours, filtering and drying to obtain polar plant fiber;
heating the petroleum asphalt to 110 ℃ to melt the petroleum asphalt, adding the polar plant fiber, the modified coal-based activated carbon and the epoxy resin, and uniformly stirring and mixing to obtain a mixture;
and step three, adding cement, a curing agent, a reinforcing agent, a light stabilizer, a filler and water into the mixture in a stirring state, and uniformly mixing to obtain the high-strength pavement material.
Example 28: a high-strength pavement material, which is different from that of example 1 in that it is prepared by the following steps:
step one, preparing modified coal-based activated carbon:
a. crushing coal-based activated carbon to 100 meshes, cleaning, drying, stirring and soaking with a hydrochloric acid solution, performing suction filtration, cleaning with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon I;
b. stirring and dipping the dried activated carbon I with a sodium hydroxide solution, performing suction filtration, washing with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon II;
c. roasting the dried activated carbon II at the temperature of 450 ℃ for 3 hours, and cooling to normal temperature after roasting to obtain modified coal-based activated carbon;
preparing polar plant fibers:
d. pulverizing sisal fiber into 50 mesh, adding into a stainless steel pot together with water, boiling, and filtering to obtain crude fiber;
e. soaking the crude fiber in 10wt% NaOH solution for 24 hr, adding acetic acid to regulate pH to neutrality, filtering and stoving;
f. soaking the dried crude fiber in 5wt% methyl chloride triethoxy silane methanol solution for 35 hours, filtering and drying to obtain polar plant fiber;
heating the petroleum asphalt to 120 ℃ to melt the petroleum asphalt, adding the polar plant fiber, the modified coal-based activated carbon and the epoxy resin, and uniformly stirring and mixing to obtain a mixture;
and step three, adding cement, a curing agent, a reinforcing agent, a light stabilizer, a filler and water into the mixture in a stirring state, and uniformly mixing to obtain the high-strength pavement material.
Example 29: a high-strength pavement material, which is different from that of example 1 in that it is prepared by the following steps:
step one, preparing modified coal-based activated carbon:
a. crushing coal-based activated carbon to 100 meshes, cleaning, drying, stirring and soaking with a hydrochloric acid solution, performing suction filtration, cleaning with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon I;
b. stirring and dipping the dried activated carbon I with a sodium hydroxide solution, performing suction filtration, washing with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon II;
c. roasting the dried activated carbon II at the temperature of 450 ℃ for 3 hours, and cooling to normal temperature after roasting to obtain modified coal-based activated carbon;
preparing polar plant fibers:
d. pulverizing sisal fiber into 50 mesh, adding into a stainless steel pot together with water, boiling, and filtering to obtain crude fiber;
e. soaking the crude fiber in 10wt% NaOH solution for 24 hr, adding acetic acid to regulate pH to neutrality, filtering and stoving;
f. soaking the dried crude fiber in 5wt% methyl chloride triethoxy silane methanol solution for 35 hours, filtering and drying to obtain polar plant fiber;
heating the petroleum asphalt to 130 ℃ to melt the petroleum asphalt, adding the polar plant fiber, the modified coal-based activated carbon and the epoxy resin, and uniformly stirring and mixing to obtain a mixture;
and step three, adding cement, a curing agent, a reinforcing agent, a light stabilizer, a filler and water into the mixture in a stirring state, and uniformly mixing to obtain the high-strength pavement material.
Comparative example 1: a high-strength pavement material is different from that of example 1 in that polar plant fibers are not added.
Comparative example 2: a high-strength pavement material which is different from that of example 1 in that modified coal-based activated carbon is not added.
Comparative example 3: a high-strength pavement material which is different from that of example 1 in that polar plant fibers and modified coal-based activated carbon are not added.
Comparative example 4: a high-strength pavement material which is different from that of example 1 in that no reinforcing agent is added.
Comparative example 5: a high-strength pavement material, which is different from that of example 1 in that it is prepared by the following steps:
step one, preparing modified coal-based activated carbon:
a. crushing coal-based activated carbon to 100 meshes, cleaning, drying, stirring and soaking with a hydrochloric acid solution, performing suction filtration, cleaning with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon I;
b. stirring and dipping the dried activated carbon I by using a sodium hydroxide solution, performing suction filtration, washing by using deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain modified coal-based activated carbon;
preparing polar plant fibers:
d. pulverizing sisal fiber into 50 mesh, adding into a stainless steel pot together with water, boiling, and filtering to obtain crude fiber;
e. soaking the crude fiber in 10wt% NaOH solution for 24 hr, adding acetic acid to regulate pH to neutrality, filtering and stoving;
f. soaking the dried crude fiber in 5wt% methyl chloride triethoxy silane methanol solution for 30 hours, filtering and drying to obtain polar plant fiber;
heating the petroleum asphalt to 110 ℃ to melt the petroleum asphalt, adding the polar plant fiber, the modified coal-based activated carbon and the epoxy resin, and uniformly stirring and mixing to obtain a mixture;
and step three, adding cement, a curing agent, a reinforcing agent, a light stabilizer, a filler and water into the mixture in a stirring state, and uniformly mixing to obtain the high-strength pavement material.
Comparative example 6: a high-strength pavement material, which is different from that of example 1 in that it is prepared by the following steps:
step one, preparing modified coal-based activated carbon:
a. crushing the coal-based active carbon to 100 meshes, cleaning and drying to obtain modified coal-based active carbon;
preparing polar plant fibers:
d. pulverizing sisal fiber into 50 mesh, adding into a stainless steel pot together with water, boiling, and filtering to obtain crude fiber;
e. soaking the crude fiber in 10wt% NaOH solution for 24 hr, adding acetic acid to regulate pH to neutrality, filtering and stoving;
f. soaking the dried crude fiber in 5wt% methyl chloride triethoxy silane methanol solution for 30 hours, filtering and drying to obtain polar plant fiber;
heating the petroleum asphalt to 110 ℃ to melt the petroleum asphalt, adding the polar plant fiber, the modified coal-based activated carbon and the epoxy resin, and uniformly stirring and mixing to obtain a mixture;
and step three, adding cement, a curing agent, a reinforcing agent, a light stabilizer, a filler and water into the mixture in a stirring state, and uniformly mixing to obtain the high-strength pavement material.
Comparative example 7: a high-strength pavement material, which is different from that of example 1 in that it is prepared by the following steps:
step one, preparing modified coal-based activated carbon:
a. crushing coal-based activated carbon to 100 meshes, cleaning, drying, stirring and soaking with a hydrochloric acid solution, performing suction filtration, cleaning with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon I;
b. stirring and dipping the dried activated carbon I with a sodium hydroxide solution, performing suction filtration, washing with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon II;
c. roasting the dried activated carbon II at the temperature of 450 ℃ for 3 hours, and cooling to normal temperature after roasting to obtain modified coal-based activated carbon;
preparing polar plant fibers:
d. pulverizing sisal fiber into 50 mesh, adding into a stainless steel pot together with water, boiling, and filtering to obtain crude fiber;
e. soaking the crude fiber in 10wt% NaOH solution for 24 hr, adding acetic acid to regulate pH to neutrality, filtering and stoving to obtain polar plant fiber;
heating the petroleum asphalt to 110 ℃ to melt the petroleum asphalt, adding the polar plant fiber, the modified coal-based activated carbon and the epoxy resin, and uniformly stirring and mixing to obtain a mixture;
and step three, adding cement, a curing agent, a reinforcing agent, a light stabilizer, a filler and water into the mixture in a stirring state, and uniformly mixing to obtain the high-strength pavement material.
Comparative example 8: a high-strength pavement material, which is different from that of example 1 in that it is prepared by the following steps:
step one, preparing modified coal-based activated carbon:
a. crushing coal-based activated carbon to 100 meshes, cleaning, drying, stirring and soaking with a hydrochloric acid solution, performing suction filtration, cleaning with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon I;
b. stirring and dipping the dried activated carbon I with a sodium hydroxide solution, performing suction filtration, washing with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon II;
c. roasting the dried activated carbon II at the temperature of 450 ℃ for 3 hours, and cooling to normal temperature after roasting to obtain modified coal-based activated carbon;
preparing polar plant fibers:
d. pulverizing sisal fiber into 50 mesh, adding into a stainless steel pot together with water, boiling, and filtering to obtain polar plant fiber;
heating the petroleum asphalt to 110 ℃ to melt the petroleum asphalt, adding the polar plant fiber, the modified coal-based activated carbon and the epoxy resin, and uniformly stirring and mixing to obtain a mixture;
and step three, adding cement, a curing agent, a reinforcing agent, a light stabilizer, a filler and water into the mixture in a stirring state, and uniformly mixing to obtain the high-strength pavement material.
Test-mechanical strength and Corrosion resistance test
Test samples: the high-strength pavement materials obtained in examples 1 to 29 were used as test samples 1 to 29, and the high-strength pavement materials obtained in comparative examples 1 to 8 were used as control samples 1 to 8.
The test method comprises the following steps: the tensile strength, the breaking strength and the compressive strength of the test samples 1 to 29 and the control samples 1 to 8 were respectively tested, as well as the corrosion resistance to sulfuric acid (20 wt%, 25 ℃) and sodium hydroxide (20 wt%, 25 ℃) and the test data were recorded.
And (3) test results: the test results of the test samples 1 to 29 and the control samples 1 to 8 are shown in Table 2. As can be seen from Table 2, the tensile strength, the breaking strength, the compressive strength, the sulfuric acid corrosion resistance and the sodium hydroxide corrosion resistance of the test samples 1-29 are all superior to those of the control samples 1-8, which shows that the petroleum asphalt, the epoxy resin, the curing agent and the reinforcing agent are matched with each other to form a net-shaped three-dimensional polymer, and the filler is enveloped in the net-shaped body to enhance the pavement strength.
Particularly, after the polar plant fibers are added, the polar plant fibers form a uniform disorderly distribution state in concrete, so that structural stress is dispersed, and the strength of the pavement is enhanced. After the modified coal-based activated carbon is added, the vegetable fibers are prevented from being gathered together, the dispersibility of the polar vegetable fibers is enhanced, and the pavement strength is further enhanced. Hydrochloric acid and sodium hydroxide are adopted to modify the coal-based activated carbon, so that the compatibility of polar plant fibers and epoxy resin is improved; meanwhile, the invention also enhances the sulfuric acid corrosion resistance and the sodium hydroxide corrosion resistance of the pavement.
TABLE 2 test results of test samples 1-29 and control samples 1-8
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (7)
1. The high-strength pavement material is characterized by comprising the following components in parts by weight:
5-10 parts of petroleum asphalt;
4-8 parts of polar plant fiber;
1-5 parts of modified coal-based activated carbon;
10-15 parts of cement;
10-15 parts of epoxy resin;
10-20 parts of a curing agent;
1-5 parts of a reinforcing agent;
1-3 parts of a light stabilizer;
200-250 parts of a filler;
15-20 parts of water;
the preparation of the polar plant fiber comprises the following steps:
d. pulverizing plant fiber into 50-100 mesh, adding into stainless steel pot together with water, boiling, and filtering to obtain crude fiber;
e. soaking the crude fiber in 10wt% NaOH solution for 24-30 hr, adding acetic acid to regulate pH to neutrality, filtering and stoving;
f. soaking the dried crude fiber in 5wt% methyl chloride triethoxy silane methanol solution for 30-40 hours, filtering and drying to obtain polar plant fiber;
the preparation of the modified coal-based activated carbon comprises the following steps:
a. crushing the coal-based activated carbon to 100-150 meshes, cleaning, drying, stirring and soaking with a hydrochloric acid solution, performing suction filtration, cleaning with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon I;
b. stirring and dipping the dried activated carbon I with a sodium hydroxide solution, performing suction filtration, washing with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon II;
c. and roasting the dried activated carbon II at the temperature of 450-480 ℃ for 3-5 hours, and cooling to normal temperature after roasting to obtain the modified coal-based activated carbon.
2. The high-strength pavement material according to claim 1, wherein the polar plant fibers include any one of sisal fibers, ramie fibers, hemp fibers, and jute fibers.
3. The high-strength pavement material according to claim 1, wherein the curing agent is an acid anhydride curing agent or an amine curing agent.
4. The high-strength pavement material according to claim 1, wherein the reinforcing agent comprises at least one of polyvinyl chloride, polypropylene, and carboxymethyl cellulose.
5. The high-strength pavement material as claimed in claim 1, wherein the light stabilizer comprises any one of benzotriazole, 2-hydroxy-4-n-octoxybenzophenone and methyl salicylate.
6. The high-strength pavement material according to claim 1, wherein the filler includes any one of calcium carbonate, quartz sand, and silica fume.
7. The preparation method of the high-strength pavement material is characterized by comprising the following steps of:
step one, preparing polar plant fibers:
d. pulverizing one of sisal fiber, ramie fiber, hemp fiber, and jute fiber into 50-100 mesh, adding into stainless steel pot together with water, boiling, and filtering to obtain crude fiber;
e. soaking the crude fiber in 10wt% NaOH solution for 24-30 hr, adding acetic acid to regulate pH to neutrality, filtering and stoving;
f. soaking the dried crude fiber in 5wt% methyl chloride triethoxy silane methanol solution for 30-40 hours, filtering and drying to obtain polar plant fiber;
heating the petroleum asphalt to 110-130 ℃ to melt the petroleum asphalt, adding polar plant fibers, modified coal-based activated carbon and epoxy resin, and uniformly stirring and mixing to obtain a mixture, wherein the preparation of the modified coal-based activated carbon comprises the following steps:
a. crushing the coal-based activated carbon to 100-150 meshes, cleaning, drying, stirring and soaking with a hydrochloric acid solution, performing suction filtration, cleaning with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon I;
b. stirring and dipping the dried activated carbon I with a sodium hydroxide solution, performing suction filtration, washing with deionized water until the pH of the filtrate is the same as that of the deionized water, and drying to obtain activated carbon II;
c. roasting the dried activated carbon II at the temperature of 450-480 ℃ for 3-5 hours, and cooling to normal temperature after roasting to obtain modified coal-based activated carbon;
and step three, adding cement, a curing agent, a reinforcing agent, a light stabilizer, a filler and water into the mixture in a stirring state, and uniformly mixing to obtain the high-strength pavement material.
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| CN114804778A (en) * | 2022-05-23 | 2022-07-29 | 中交二公局萌兴工程有限公司 | Super-retarding concrete for bridge construction and preparation method thereof |
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| CN103288392B (en) * | 2013-06-05 | 2014-12-17 | 长安大学 | Fiber-toughened cement-emulsified asphalt-based mixture and preparation method thereof |
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