CN111635180B - Environment-friendly pavement concrete and preparation method thereof - Google Patents
Environment-friendly pavement concrete and preparation method thereof Download PDFInfo
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- CN111635180B CN111635180B CN202010587306.7A CN202010587306A CN111635180B CN 111635180 B CN111635180 B CN 111635180B CN 202010587306 A CN202010587306 A CN 202010587306A CN 111635180 B CN111635180 B CN 111635180B
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
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- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/10—Clay
- C04B14/106—Kaolin
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/18—Waste materials; Refuse organic
- C04B18/20—Waste materials; Refuse organic from macromolecular compounds
- C04B18/22—Rubber, e.g. ground waste tires
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- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/18—Waste materials; Refuse organic
- C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
- C04B18/248—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork from specific plants, e.g. hemp fibres
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- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/12—Nitrogen containing compounds organic derivatives of hydrazine
- C04B24/124—Amides
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- C—CHEMISTRY; METALLURGY
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/38—Polysaccharides or derivatives thereof
- C04B24/383—Cellulose or derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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- 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
- C04B2111/00017—Aspects relating to the protection of the environment
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- 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
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/52—Sound-insulating materials
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- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention discloses environment-friendly pavement concrete and a preparation method thereof, wherein the environment-friendly pavement concrete comprises the following components in parts by weight: 275-305 parts of cement; 165-195 parts of water; 8-12 parts of an additive; 35-55 parts of fly ash; 15-20 parts of composite micro powder; 25-40 parts of regenerated asphalt; 120-150 parts of modified sand stone; 650-850 parts of machine-made broken stone. The pavement concrete provided by the invention has multiple functions and high performance, and effectively solves the problems of easy aging, easy breakage, easy pothole formation, no high temperature resistance, short service life, complicated repair work and the like in the prior art.
Description
Technical Field
The invention relates to the technical field of concrete, in particular to environment-friendly pavement concrete and a preparation method thereof.
Background
The pavement concrete is artificial stone prepared from a cementing material, coarse and fine aggregates, water and other additives according to a certain proportion, the manufacturing process of the environment-friendly pavement concrete is very complicated, the environment-friendly pavement concrete with multiple functions and high performance is difficult to prepare in the existing products, and the problems of easy aging, easy fracture, easy pothole occurrence, no high temperature resistance, short service life and the like exist mostly or more or less, so that the pavement is frequently required to be repaired, the traffic is influenced, and the complex repairing work is also caused.
Disclosure of Invention
The invention aims to provide environment-friendly pavement concrete to solve the problems in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: the environment-friendly pavement concrete comprises the following components in parts by weight: 275-305 parts of cement; 165-195 parts of water; 8-12 parts of an additive; 35-55 parts of fly ash; 15-20 parts of composite micro powder; 25-40 parts of regenerated asphalt; 120-150 parts of modified sand stone; 650-850 parts of machine-made broken stone.
Preferably, the environment-friendly pavement concrete comprises the following components in parts by weight: 275 parts of cement; 165 parts of water; 8 parts of an additive; 35 parts of fly ash; 15 parts of composite micro powder; 25 parts of regenerated asphalt; 123 parts of modified sandstone; 656 parts of machine-made broken stone.
Preferably, the environment-friendly pavement concrete comprises the following components in parts by weight: 285 parts of cement; 185 parts of water; 9 parts of an additive; 38 parts of fly ash; 20 parts of composite micro powder; 35 parts of regenerated asphalt; 142 parts of modified sand; 750 parts of machine-made crushed stone.
Preferably, the environment-friendly pavement concrete comprises the following components in parts by weight: 302 parts of cement; 190 parts of water; 11 parts of an additive; 55 parts of fly ash; 17 parts of composite micro powder; 40 parts of regenerated asphalt; 145 parts of modified sand; 850 parts of machine-made macadam.
Preferably, the modified sandstone is prepared by uniformly mixing 12 parts by mass of alumina, 8 parts by mass of silica, 3 parts by mass of glass fiber reinforced plastic, 10 parts by mass of silicon carbide, 12 parts by mass of coconut shell and 47 parts by mass of white mud, sintering for 3 hours at the temperature rise of 1030 ℃, slowly cooling to 250-350 ℃, adding 20 parts by mass of waste plastic particles, 8 parts by mass of aluminate and 7 parts by mass of a polymerization mixture, reacting for 1.5 hours in a nitrogen-filled environment, putting into a double-screw extruder for extrusion, cooling to normal temperature, and putting into a crusher for crushing.
Preferably, the polymerization mixture comprises the following raw materials in parts by weight: 15 parts of carboxymethyl cellulose, 15 parts of acrylamide, 8 parts of SY-T anti-crack fiber expanding agent and 3 parts of fatty acid amide.
Preferably, the waste plastic particles are formed by cutting and crushing waste vehicle tires.
The invention also aims to provide a preparation method of the environment-friendly pavement concrete, which comprises the following steps:
s001: preparing raw materials according to the raw material proportion;
s002: uniformly mixing fly ash, modified sandstone and machine-made broken stone in raw materials, and performing wet water treatment, wherein a wet mixture with the water content of 5-10% is obtained by controlling;
s003: and (3) placing the wet mixture into a stirrer, adding cement and the composite micro powder, stirring for 15-20 minutes, adding the regenerated asphalt and clear water, stirring for 20-30 minutes, adding the additive, and stirring for 20-30 seconds to obtain the pavement premixed concrete.
Compared with the prior art, the invention has the following beneficial effects:
1. the raw materials selected by the pavement concrete belong to environment-friendly materials and the proportion of the raw materials is scientific and reasonable.
2. The modified sandstone in the raw materials is treated by a special process, and is a product with the properties of absorption space inside, high toughness, high temperature resistance and the like, and the impermeability is improved. After the pavement concrete is prepared, due to the characteristics of the modified pavement concrete, on one hand, the modified pavement concrete can adsorb the odor emitted by the asphalt at high temperature and also can absorb the oil emitted by the asphalt so as not to be exposed on the ground; on the other hand, after the waste plastic particles are mixed and modified, substances such as silicide, glass fiber reinforced plastic fibers and the like are added at the same time, so that a barrier similar to a heat-insulating material is formed, the ductility, the wear resistance, the oxidation resistance and the like of the composite material are greatly improved, and the problems of pavement cracking and deformation in a high-temperature state are avoided.
3. The modified macadam has good temperature resistance and light stability by modifying the white mud, the coconut shells and the waste tires, is favorable for preventing the pavement concrete from aging due to intermittent friction heat generated between the pavement concrete and the wheels, and is also favorable for improving the ultraviolet aging resistance of the pavement concrete. The modified macadam has good wear resistance, temperature resistance, flame retardance, sound insulation and shock absorption effects, improves the anti-permeability of pavement concrete, and can also improve the scratch resistance of the pavement concrete.
4. The adopted admixture has carboxymethyl cellulose, acrylamide, SY-T anti-crack fiber expanding agent and fatty acid amide, can play a role in lubrication and secondary reinforcement, prevents the generation of settlement cracks, provides double protection for the concrete from the two aspects of physics and chemistry together with the micro expansion generated by the expansion component, achieves the double effects of cracking inhibition and shrinkage prevention, and obviously improves the waterproof and anti-crack performance of the concrete.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The environment-friendly pavement concrete comprises the following components in parts by weight:
275-305 parts of cement;
165-195 parts of water;
8-12 parts of an additive;
35-55 parts of fly ash;
15-20 parts of composite micro powder;
25-40 parts of regenerated asphalt;
120-150 parts of modified sand stone;
650-850 parts of machine-made broken stone.
Preferably, the modified sandstone is prepared by uniformly mixing 12 parts by mass of alumina, 8 parts by mass of silica, 3 parts by mass of glass fiber reinforced plastic, 10 parts by mass of silicon carbide, 12 parts by mass of coconut shell and 47 parts by mass of white clay, sintering for 3 hours at 1030 ℃, slowly cooling to 250-350 ℃, adding 20 parts by mass of waste plastic particles, 8 parts by mass of aluminate and 7 parts by mass of a polymerization mixture, reacting for 1.5 hours in a nitrogen-filled environment, putting the mixture into a double-screw extruder for extrusion, cooling to normal temperature, and crushing the mixture in a crusher to obtain the modified sandstone.
Further preferably, the polymerization mixture comprises the following raw materials in parts by weight: 15 parts of carboxymethyl cellulose, 15 parts of acrylamide, 8 parts of SY-T anti-crack fiber expanding agent and 3 parts of fatty acid amide.
Further preferably, the waste plastic particles are obtained by cutting and pulverizing waste vehicle tires.
More preferably, the recycled asphalt is a product disclosed in Chinese patent 'a recycled asphalt and a preparation method' with application number 201911170484.3, and can also be an environment-friendly recycled asphalt sold on the market.
Further preferably, the composite micro powder is prepared from slag and steel-making tailings, for example, the composite micro powder disclosed in chinese patent application No. 201910914985.1, a method for preparing steel slag composite micro powder from slag and steel-making tailings.
Further preferably, the admixture comprises the following raw materials in parts by weight: 6 parts of polycarboxylic acid water reducing agent, 5 parts of air entraining agent, and the polycarboxylic acid water reducing agent and the air entraining agent are environment-friendly products which are usually sold in the market, and no specific requirement is made on brands.
The preferred raw material ratios of the invention are shown in small table 1
The environment-friendly pavement concrete in the embodiments 1 to 6 of the invention is prepared from the above raw materials to obtain test samples 1 to 7, and the specific method comprises the following steps:
s001, preparing raw materials according to the raw material proportion;
s002: uniformly mixing fly ash, modified sandstone and machine-made broken stone in raw materials, and performing wet water treatment, wherein a wet mixture with the water content of 5-10% is obtained by controlling;
s003: and (3) placing the wet mixture into a stirrer, adding cement and the composite micro powder, stirring for 15-20 minutes, adding the regenerated asphalt and clear water, stirring for 20-30 minutes, adding the additive, and stirring for 20-30 seconds to obtain the pavement premixed concrete.
When the high-performance colored asphalt pavement concrete is applied, the pavement premixed concrete is paved on the pavement, and the paved high-performance colored asphalt pavement concrete is rolled and formed by using a steel wheel road roller.
The performance of the environment-friendly pavement concrete is better compared and detected, and the pavement concrete is prepared according to a conventional method and a raw material ratio to obtain a reference sample;
effect verification of the invention
1. Abrasion resistance test
The test method comprises the following steps: the test samples 1-7 (marked as A11-A17) and the control samples 1-3 (marked as B11-B13) are paved on a test bed with the same weight, standard road surfaces are respectively manufactured, the initial weight of each standard road surface is measured, and the initial weight of each standard road surface is kept consistent and is 500 +/-0.2 KG. Under normal illumination at room temperature, rubber wheels with the same specification and the same surface friction coefficient are used, friction is respectively carried out for 10000 times at the same speed, the interval time is 10s each time, then a standard pavement with a test bed is taken out, chips on wear-resistant recycled asphalt concrete are blown away by a blower, then weighing is respectively carried out, the difference value between the chips and the initial weight is recorded, and the accuracy is 0.1g, so that the data shown in the table 2 are obtained:
the test results of the test samples A11-A17 and the test samples B11-B13 are compared to obtain the environment-friendly pavement concrete with the advantages of extremely high skid resistance and abrasion resistance.
2. Stability, bending tensile Strength and other Performance tests
According to technical standards such as JTG 30-2003 road cement concrete pavement construction technical specifications, JTGE 30-2015 road engineering cement and cement concrete test procedures and the like, test samples (marked as A21-A27) and control samples 1-3 (marked as B21-B23) are manufactured according to the technical standards of examples 1-7, and corresponding tests are carried out according to the standards, so that the following results are obtained:
the test results of the stability, the bending tensile strength and the like of the environment-friendly pavement concrete have more advantages compared with other test pieces.
3. Test of exhaust gas, oil bleeding, etc
According to technical standards such as JTG 30-2003 road cement concrete pavement construction technical specifications, JTGE 30-2015 road engineering cement and cement concrete test procedures and the like, 10-meter road sections (marked as A31-A37) and reference road sections 1-3 (marked as B31-B33) are respectively paved according to embodiments 1-7, and corresponding tests are carried out according to the standards to obtain the results of the following tables 3 and 4
Table 3: exhaust gas test
Table 4: oil bleeding test
As shown in tables 3 and 4, the environment-friendly pavement concrete of the invention has the advantages of less waste gas emission, high temperature resistance and low oil bleeding rate.
The principle of the invention for realizing the beneficial effects of the environment-friendly pavement concrete is explained as follows:
1. the raw materials selected by the concrete belong to environment-friendly materials and the proportion of the raw materials is scientific and reasonable.
2. The modified sand stone in the raw materials is treated by a special process, is a product with the properties of absorption space inside, high toughness, high temperature resistance and the like, and particularly, substances such as alumina, silicon oxide, silicon carbide, glass fiber reinforced plastic fiber and the like modify white mud and coconut shells under the high-temperature condition, so that Ca in the white mud is reduced2+、OH-Alkaline substances are added, and the mixture and silicide form flaky crystals under high-temperature sintering conditions, while the coconut shell forms active carbon with pores particularly under the modification of metal oxide, and the surface functional groups are formed after the mixture of waste plastic particles, aluminate and polymerization mixture is reactedThe quality and quantity of the concrete are changed, and the concrete can be melted and blended with sintered crystals, so that a polymer with high adhesion, strong adsorption force, wear resistance, temperature resistance, flame retardance and other characteristics is formed, and polygonal particles with pores are formed after the polymer is crushed, so that water, cement and mortar can be well locked, the pores in the concrete are greatly reduced, and the impermeability of the concrete is improved. After the pavement concrete is prepared, due to the characteristics of the modified pavement concrete, on one hand, the modified pavement concrete can adsorb the odor emitted by the asphalt at high temperature and also can absorb the oil emitted by the asphalt so as not to be exposed on the ground; on the other hand, after the waste plastic particles are mixed and modified, substances such as silicide, glass fiber reinforced plastic fibers and the like are added at the same time, so that a barrier similar to a heat-insulating material is formed, the ductility, the wear resistance, the oxidation resistance and the like of the composite material are greatly improved, and the problems of pavement cracking and deformation in a high-temperature state are avoided.
3. The modified macadam has good temperature resistance and light stability by modifying the white mud, the coconut shells and the waste tires, is favorable for preventing the pavement concrete from aging due to intermittent friction heat generated between the pavement concrete and the wheels, and is also favorable for improving the ultraviolet aging resistance of the pavement concrete. The modified macadam has good wear resistance, temperature resistance, flame retardance, sound insulation and shock absorption effects, and is beneficial to improving the overall quality of pavement concrete, and the interior of the modified macadam is laminated and staggered in sheets besides pores, so that the medium penetration distance can be increased, the permeability resistance of the pavement concrete is improved, and the scratch resistance of the pavement concrete can be improved.
4. The adopted admixture has carboxymethyl cellulose, acrylamide, SY-T anti-crack fiber expanding agent and fatty acid amide, can play a role in lubrication and secondary reinforcement, prevents the generation of settlement cracks, provides double protection for the concrete from the two aspects of physics and chemistry together with the micro expansion generated by the expansion component, achieves the double effects of cracking inhibition and shrinkage prevention, and obviously improves the waterproof and anti-crack performance of the concrete.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an environment-friendly pavement concrete which characterized in that: the composition comprises the following components in parts by weight:
275-305 parts of cement;
165-195 parts of water;
8-12 parts of an additive;
35-55 parts of fly ash;
15-20 parts of composite micro powder;
25-40 parts of regenerated asphalt;
120-150 parts of modified sand stone;
650-850 parts of machine-made crushed stone;
the modified sandstone is prepared by uniformly mixing 12 parts by mass of alumina, 8 parts by mass of silica, 3 parts by mass of glass fiber reinforced plastic, 10 parts by mass of silicon carbide, 12 parts by mass of coconut shell and 47 parts by mass of white mud, sintering for 3 hours at the temperature rise of 1030 ℃, slowly cooling to 250-350 ℃, adding 20 parts by mass of waste plastic particles, 8 parts by mass of aluminate and 7 parts by mass of a polymerization mixture, reacting for 1.5 hours in a nitrogen-introduced environment, putting the mixture into a double-screw extruder for extrusion, cooling to normal temperature, and putting the mixture into a crusher for crushing;
the polymerization mixture comprises the following raw materials in parts by weight: 15 parts of carboxymethyl cellulose, 15 parts of acrylamide, 8 parts of SY-T anti-crack fiber expanding agent and 3 parts of fatty acid amide;
the additive comprises the following raw materials in parts by weight: 6 parts of a polycarboxylic acid water reducing agent and 5 parts of an air entraining agent.
2. The environmentally friendly pavement concrete according to claim 1, wherein: the composition comprises the following components in parts by weight:
275 parts of cement;
165 parts of water;
8 parts of an additive;
35 parts of fly ash;
15 parts of composite micro powder;
25 parts of regenerated asphalt;
123 parts of modified sandstone;
656 parts of machine-made broken stone.
3. The environmentally friendly pavement concrete according to claim 1, wherein: the composition comprises the following components in parts by weight:
285 parts of cement;
185 parts of water;
9 parts of an additive;
38 parts of fly ash;
20 parts of composite micro powder;
35 parts of regenerated asphalt;
142 parts of modified sand;
750 parts of machine-made crushed stone.
4. The environmentally friendly pavement concrete according to claim 1, wherein: the composition comprises the following components in parts by weight:
302 parts of cement;
190 parts of water;
11 parts of an additive;
55 parts of fly ash;
17 parts of composite micro powder;
40 parts of regenerated asphalt;
145 parts of modified sand;
850 parts of machine-made macadam.
5. The environmentally friendly pavement concrete according to any one of claims 1 to 4, wherein: the waste plastic particles are formed by cutting and crushing waste vehicle tires.
6. The method for preparing environment-friendly pavement concrete according to any one of claims 1 to 4, characterized by comprising the following steps: the method comprises the following steps:
s001: preparing raw materials according to the raw material proportion;
s002: uniformly mixing fly ash, modified sandstone and machine-made broken stone in raw materials, and performing wet water treatment, wherein a wet mixture with the water content of 5-10% is obtained by controlling;
s003: and (3) placing the wet mixture into a stirrer, adding cement and the composite micro powder, stirring for 15-20 minutes, adding the regenerated asphalt and water, stirring for 20-30 minutes, adding the additive, and stirring for 20-30 seconds to obtain the pavement premixed concrete.
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| CN102531501A (en) * | 2012-01-09 | 2012-07-04 | 山西省交通科学研究院 | High-doping-amount fly ash concrete road surface material and preparation method thereof |
| KR101352937B1 (en) * | 2013-05-24 | 2014-01-17 | (유)하남종합건설 | A high early strength concrete composition using the eco-friendly cycling silica sand and repairing method of concrete pavement using the same |
| CN104829186A (en) * | 2014-12-21 | 2015-08-12 | 潍坊德霖建材科技有限公司 | Preparation method of heat-repairing concrete containing asphalt aggregate |
| CN109881554B (en) * | 2017-02-12 | 2021-12-21 | 武汉誉城千里建工有限公司 | Construction method of modified asphalt cement concrete pavement |
| CN110550910A (en) * | 2019-09-24 | 2019-12-10 | 中交武汉港湾工程设计研究院有限公司 | roller compacted concrete applied to rapid repair of pavement base and preparation method thereof |
| CN111072330B (en) * | 2019-11-28 | 2022-02-01 | 吕梁振坤建筑材料有限公司 | High-strength pervious asphalt concrete and preparation method thereof |
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