CN112047701A - High-strength porous pervious concrete pavement and preparation method thereof - Google Patents
High-strength porous pervious concrete pavement and preparation method thereof Download PDFInfo
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- CN112047701A CN112047701A CN202010797784.0A CN202010797784A CN112047701A CN 112047701 A CN112047701 A CN 112047701A CN 202010797784 A CN202010797784 A CN 202010797784A CN 112047701 A CN112047701 A CN 112047701A
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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
- 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
- C04B28/08—Slag cements
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/224—Surface drainage of streets
- E01C11/225—Paving specially adapted for through-the-surfacing drainage, e.g. perforated, porous; Preformed paving elements comprising, or adapted to form, passageways for carrying off drainage
- E01C11/226—Coherent pavings
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
- E01C7/14—Concrete paving
- E01C7/142—Mixtures or their components, e.g. aggregate
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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
- 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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- 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
Abstract
The invention discloses a high-strength porous pervious concrete pavement and a preparation method thereof, which comprises the following raw materials, by weight, 30-45% of recycled aggregate, 30-35% of cement, 5-10% of gravel, 3-5% of mixed powder, 2-5% of an additive, 1-3% of an epoxy resin adhesive, 3-5% of asphalt and 10-15% of water; the invention is made by adopting recycled aggregate to match materials such as cement, asphalt and the like, has the effects of environmental protection, has high pavement strength of mixed pavement, long service life, reasonable component configuration of asphalt and concrete, low production cost and good economic benefit, simultaneously has high early strength of the pavement, can reach 80 percent of strength after 3 days, greatly saves the construction and maintenance time, has the strength of more than 30MPa after 28 days, meets the functional requirement of a base layer structure, prolongs the service life of the pavement and has no pollution.
Description
Technical Field
The invention relates to the technical field of concrete pavements, in particular to a high-strength porous pervious concrete pavement and a preparation method thereof.
Background
The concrete is a mixture prepared by mixing cementing material, granular aggregate, water, chemical additive and mineral admixture which need to be added according to a proper proportion, or a composite material with an aggregate structure formed after hardening is generally prepared by mixing a cementing material, water, fine aggregate and coarse aggregate, adding the additive and the mineral admixture if necessary and mixing according to a proper proportion, and is one of the most important civil engineering materials in the present generation. The pervious concrete enables novel concrete to have high water permeability, can guarantee rapid penetration of moisture, and can also effectively protect underground water resources under the condition that normal working and living are not influenced.
The prior pervious concrete often cannot meet the use requirement of strength while meeting the requirement of water permeability, thereby limiting the application of the concrete pavement made of the pervious concrete. Therefore, a new technical solution needs to be provided.
Disclosure of Invention
The invention aims to provide a high-strength porous pervious concrete pavement and a preparation method thereof, which solve the problem that the application of the concrete pavement made of the pervious concrete is limited because the strength often cannot meet the use requirement while the water permeability of the existing pervious concrete meets the requirement.
In order to achieve the purpose, the invention provides the following technical scheme: the high-strength porous pervious concrete pavement comprises, by weight, 30-45% of recycled aggregate, 30-35% of cement, 5-10% of sandstone, 3-5% of mixed powder, 2-5% of an additive, 1-3% of an epoxy resin adhesive, 3-5% of asphalt and 10-15% of water.
The invention relates to a concrete building block, which comprises the following raw materials, by weight, 38% of recycled aggregate, 32% of cement, 7% of sand, 4% of mixed powder, 3% of additive, 2% of epoxy resin adhesive, 4% of asphalt and 10% of water.
As a preferred embodiment of the present invention, the recycled aggregate comprises fine aggregate and coarse aggregate, and the weight percentages of the components in the recycled aggregate are: 40% of fine aggregate and 60% of coarse aggregate, wherein the particle size of the fine aggregate is 1-5 mm, and the particle size of the coarse aggregate is 5-20 mm.
As a preferred embodiment of the invention, the cement comprises ordinary portland cement and slag portland cement, and the cement comprises the following components in percentage by weight: 50-70% of ordinary Portland cement and 30-50% of slag Portland cement.
As a preferred embodiment of the present invention, the mixed powder is a mixture of lithium slag powder, coal powder, silicon powder and straw powder, and the weight percentages of the components in the mixed powder are as follows: 30% of lithium slag powder, 20% of coal powder, 20% of silicon powder and 30% of straw powder.
In a preferred embodiment of the present invention, the additive includes a water reducing agent, a polystyrene butadiene copolymer, a silicone-acrylic emulsion, a latex powder and a resin.
As a preferred embodiment of the invention, the asphalt comprises matrix asphalt, furfural extract oil, styrene-butadiene rubber, a stabilizer, a viscosity reducer, an infrared absorber and water, and the asphalt comprises the following components in percentage by weight: 55% of matrix asphalt, 5% of furfural extract oil, 5% of styrene butadiene rubber, 8% of stabilizing agent, 5% of viscosity reducer, 2% of infrared absorbent and 20% of water.
As a preferred embodiment of the present invention, the preparation method comprises the steps of:
step 1: preparing recycled aggregate; the method comprises the steps of collecting waste concrete, waste bricks and sand ash waste generated in construction of a building site as raw materials, conveying the raw materials to a crushing device for crushing, screening the crushed raw materials, removing impurities such as metal objects and wood blocks in the raw materials in the screening process to obtain primary recycled aggregate, screening the aggregate again to separate coarse auxiliary materials from fine aggregate, and simultaneously placing the recycled aggregate into a closed container with the relative humidity of 40% -80% and the volume concentration of carbon dioxide of 10-90% for carbon strengthening treatment to obtain the recycled aggregate;
step 2: adding ordinary portland cement and slag portland cement in cement into a stirring reaction kettle of concrete according to a certain proportion, simultaneously adding mixed powder, an additive, an epoxy resin adhesive and water which are prepared according to a certain proportion into the reaction kettle for internal stirring, wherein the stirring time is 20-40 min, and the rotating speed is as follows: 800-1000 r/min to obtain a cement mixture;
and 3, adding the recycled aggregate obtained in the step 1, asphalt and sand stone into a stirring reaction kettle, and fully stirring and mixing the recycled aggregate and the cement mixture, wherein the temperature of the recycled aggregate, the asphalt and the sand stone is increased in the stirring process: stirring for 10-20 min at 30-40 ℃, and rotating speed: 400-600 r/min to obtain concrete slurry;
and 4, step 4: cleaning the interior of the pavement template to ensure that the pavement is made by mixing natural gravel and broken stones, so that the pavement is dry and clean and has no loose stones, dust and impurities;
and 5: pouring the concrete slurry obtained in the step (3) into a pavement template, and performing paving treatment to enable the concrete slurry to be uniformly paved in the pavement template, wherein paving can be performed by adopting a paver or manual paving, leveling is performed by using a light compacting machine after paving is completed, each square pavement is vibrated for 2-5 times, and each time lasts for 5-10 s;
step 6: cover plastic film after concrete slurry paves to level in the road surface template, then every 4 hours every day watering maintenance once, 8 hours watering maintenance once at night, offer an expansion joint in every five meters on road surface simultaneously, its gap width is 3 ~ 5mm, and the maintenance cycle is: and (5) 25-30 days, thus obtaining the high-strength porous pervious concrete pavement.
In a preferred embodiment of the present invention, the sand added in step 3 has a particle size of 1-3 cm.
Compared with the prior art, the invention has the following beneficial effects:
the invention is made by adopting recycled aggregate to match materials such as cement, asphalt and the like, has the effects of environmental protection, the pavement paved by the mixture has high strength and long service life, the asphalt and the concrete have reasonable component configuration, the production cost is low, the economic benefit is good, meanwhile, the early strength of the pavement is high, the strength can reach 80 percent after 3 days, the construction and maintenance time is greatly saved, the strength can reach more than 30MPa after 28 days, the functional requirement of a base layer structure is met, the service life of the pavement is prolonged, and the material is pollution-free.
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.
Example 1
The invention provides a high-strength porous pervious concrete pavement and a preparation method thereof, wherein the pavement comprises the following raw materials, by weight, 30-45% of recycled aggregate, 30-35% of cement, 5-10% of gravel, 3-5% of mixed powder, 2-5% of an additive, 1-3% of an epoxy resin adhesive, 3-5% of asphalt and 10-15% of water.
The modified concrete comprises, by weight, 30% of recycled aggregate, 35% of cement, 5% of gravel, 3% of mixed powder, 2% of additive, 1% of epoxy resin adhesive, 3% of asphalt and 10% of water.
In a further improvement, the recycled aggregate comprises fine aggregate and coarse aggregate, and the recycled aggregate comprises the following components in percentage by weight: 40% of fine aggregate and 60% of coarse aggregate, wherein the particle size of the fine aggregate is 1mm, and the particle size of the coarse aggregate is 5 mm.
In a further improvement, the cement comprises ordinary portland cement and slag portland cement, and the cement comprises the following components in percentage by weight: 50 percent of ordinary Portland cement and 50 percent of slag Portland cement.
In a further improvement, the mixed powder is a mixture of lithium slag powder, coal powder, silicon powder and straw powder, and the weight percentages of the components in the mixed powder are as follows: 30% of lithium slag powder, 20% of coal powder, 20% of silicon powder and 30% of straw powder.
In a further improvement, the additive comprises a water reducing agent, a polystyrene butadiene copolymer, a silicone-acrylate emulsion, latex powder and resin.
In a further improvement, the asphalt comprises matrix asphalt, furfural extract oil, styrene butadiene rubber, a stabilizer, a viscosity reducer, an infrared absorbent and water, and the asphalt comprises the following components in percentage by weight: 55% of matrix asphalt, 5% of furfural extract oil, 5% of styrene butadiene rubber, 8% of stabilizing agent, 5% of viscosity reducer, 2% of infrared absorbent and 20% of water.
In a further improvement, the preparation method comprises the following steps:
step 1: preparing recycled aggregate; the method comprises the steps of collecting waste concrete, waste bricks and sand ash waste generated by construction in a building site as raw materials, conveying the raw materials to a crushing device for crushing, screening the crushed raw materials, removing impurities such as metal objects and wood blocks in the raw materials in the screening process to obtain primary recycled aggregate, screening the aggregate again to separate coarse auxiliary materials from fine aggregate, and simultaneously placing the recycled aggregate into a closed container with the relative humidity of 40% and the volume concentration of carbon dioxide of 10% for carbon reinforcement treatment to obtain the recycled aggregate;
step 2: adding ordinary portland cement and slag portland cement in cement into a stirring reaction kettle of concrete according to a proportion, simultaneously adding mixed powder, an additive, an epoxy resin adhesive and water which are prepared according to a proportion into the reaction kettle for internal stirring, wherein the stirring time is 20min, and the rotating speed is as follows: 800 r/min to obtain a cement mixture;
and 3, adding the recycled aggregate obtained in the step 1, asphalt and sand stone into a stirring reaction kettle, and fully stirring and mixing the recycled aggregate and the cement mixture, wherein the temperature of the recycled aggregate, the asphalt and the sand stone is increased in the stirring process: stirring for 10min at 30 ℃, and rotating speed: 400 r/min to obtain concrete slurry;
and 4, step 4: cleaning the interior of the pavement template to ensure that the pavement is made by mixing natural gravel and broken stones, so that the pavement is dry and clean and has no loose stones, dust and impurities;
and 5: pouring the concrete slurry obtained in the step (3) into a pavement template, and carrying out paving treatment to ensure that the concrete slurry can be uniformly paved in the pavement template, wherein the paving can be carried out by adopting a paver or manual paving, and after the paving is finished, leveling is carried out by utilizing a light compaction machine, and each square pavement is vibrated for 2 times and lasts for 5s each time;
step 6: cover plastic film after concrete slurry paves to level in the road surface template, then every 4 hours every day watering maintenance once, 8 hours watering maintenance once at night, offer an expansion joint in every five meters on road surface simultaneously, its gap width is 3mm, and the maintenance cycle is: and (5) obtaining the high-strength porous pervious concrete pavement after 25 days.
In a further improvement, the sand added in the step 3 has the particle size of 1 cm.
Compared with the prior art, the invention has the following beneficial effects:
the invention is made by adopting recycled aggregate to match materials such as cement, asphalt and the like, has the effects of environmental protection, the pavement paved by the mixture has high strength and long service life, the asphalt and the concrete have reasonable component configuration, the production cost is low, the economic benefit is good, meanwhile, the early strength of the pavement is high, the strength can reach 80 percent after 3 days, the construction and maintenance time is greatly saved, the strength can reach more than 30MPa after 28 days, the functional requirement of a base layer structure is met, the service life of the pavement is prolonged, and the material is pollution-free.
Example 2
The invention provides a high-strength porous pervious concrete pavement and a preparation method thereof, wherein the pavement comprises the following raw materials, by weight, 30-45% of recycled aggregate, 30-35% of cement, 5-10% of gravel, 3-5% of mixed powder, 2-5% of an additive, 1-3% of an epoxy resin adhesive, 3-5% of asphalt and 10-15% of water.
The improved cement concrete comprises the following raw materials, by weight, 38% of recycled aggregate, 32% of cement, 7% of sand, 4% of mixed powder, 3% of an additive, 2% of an epoxy resin adhesive, 4% of asphalt and 10% of water.
In a further improvement, the recycled aggregate comprises fine aggregate and coarse aggregate, and the recycled aggregate comprises the following components in percentage by weight: 40% of fine aggregate and 60% of coarse aggregate, wherein the particle size of the fine aggregate is 3mm, and the particle size of the coarse aggregate is 13 mm.
In a further improvement, the cement comprises ordinary portland cement and slag portland cement, and the cement comprises the following components in percentage by weight: 60% of ordinary portland cement and 40% of slag portland cement.
In a further improvement, the mixed powder is a mixture of lithium slag powder, coal powder, silicon powder and straw powder, and the weight percentages of the components in the mixed powder are as follows: 30% of lithium slag powder, 20% of coal powder, 20% of silicon powder and 30% of straw powder.
In a further improvement, the additive comprises a water reducing agent, a polystyrene butadiene copolymer, a silicone-acrylate emulsion, latex powder and resin.
In a further improvement, the asphalt comprises matrix asphalt, furfural extract oil, styrene butadiene rubber, a stabilizer, a viscosity reducer, an infrared absorbent and water, and the asphalt comprises the following components in percentage by weight: 55% of matrix asphalt, 5% of furfural extract oil, 5% of styrene butadiene rubber, 8% of stabilizing agent, 5% of viscosity reducer, 2% of infrared absorbent and 20% of water.
In a further improvement, the preparation method comprises the following steps:
step 1: preparing recycled aggregate; the method comprises the steps of collecting waste concrete, waste bricks and sand ash waste generated by construction in a building site as raw materials, conveying the raw materials to a crushing device for crushing, screening the crushed raw materials, removing impurities such as metal objects and wood blocks in the raw materials in the screening process to obtain primary recycled aggregate, screening the aggregate again to separate coarse auxiliary materials from fine aggregate, and simultaneously placing the recycled aggregate into a closed container with relative humidity of 60% and volume concentration of carbon dioxide of 40% for carbon reinforcement treatment to obtain the recycled aggregate;
step 2: adding ordinary portland cement and slag portland cement in cement into a stirring reaction kettle of concrete according to a proportion, simultaneously adding mixed powder, an additive, an epoxy resin adhesive and water which are prepared according to a proportion into the reaction kettle for internal stirring, wherein the stirring time is 30min, and the rotating speed is as follows: 900 r/min to obtain a cement mixture;
and 3, adding the recycled aggregate obtained in the step 1, asphalt and sand stone into a stirring reaction kettle, and fully stirring and mixing the recycled aggregate and the cement mixture, wherein the temperature of the recycled aggregate, the asphalt and the sand stone is increased in the stirring process: stirring for 15min at 35 ℃, and rotating speed of: 500 r/min to obtain concrete slurry;
and 4, step 4: cleaning the interior of the pavement template to ensure that the pavement is made by mixing natural gravel and broken stones, so that the pavement is dry and clean and has no loose stones, dust and impurities;
and 5: pouring the concrete slurry obtained in the step (3) into a pavement template, and carrying out paving treatment to ensure that the concrete slurry can be uniformly paved in the pavement template, wherein the paving can be carried out by adopting a paver or manual paving, and after the paving is finished, leveling is carried out by utilizing a light compaction machine, and each square pavement is vibrated for 3 times and lasts for 8s each time;
step 6: cover plastic film after concrete slurry paves to level in the road surface template, then every 4 hours every day watering maintenance once, 8 hours watering maintenance once at night, offer an expansion joint in every five meters on road surface simultaneously, its gap width is 4mm, and the maintenance cycle is: and obtaining the high-strength porous pervious concrete pavement after 28 days.
In a further improvement, the sand added in the step 3 has the particle size of 2 cm.
Compared with the prior art, the invention has the following beneficial effects:
the invention is made by adopting recycled aggregate to match materials such as cement, asphalt and the like, has the effects of environmental protection, the pavement paved by the mixture has high strength and long service life, the asphalt and the concrete have reasonable component configuration, the production cost is low, the economic benefit is good, meanwhile, the early strength of the pavement is high, the strength can reach 80 percent after 3 days, the construction and maintenance time is greatly saved, the strength can reach more than 30MPa after 28 days, the functional requirement of a base layer structure is met, the service life of the pavement is prolonged, and the material is pollution-free.
Example 3
The invention provides a high-strength porous pervious concrete pavement and a preparation method thereof, wherein the pavement comprises the following raw materials, by weight, 30-45% of recycled aggregate, 30-35% of cement, 5-10% of gravel, 3-5% of mixed powder, 2-5% of an additive, 1-3% of an epoxy resin adhesive, 3-5% of asphalt and 10-15% of water.
The concrete is further improved by comprising the following raw materials in percentage by weight of 45% of recycled aggregate, 35% of cement, 10% of sand stone, 5% of mixed powder, 5% of additive, 3% of epoxy resin adhesive, 5% of asphalt and 15% of water.
In a further improvement, the recycled aggregate comprises fine aggregate and coarse aggregate, and the recycled aggregate comprises the following components in percentage by weight: 40% of fine aggregate and 60% of coarse aggregate, wherein the particle size of the fine aggregate is 5mm, and the particle size of the coarse aggregate is 20 mm.
In a further improvement, the cement comprises ordinary portland cement and slag portland cement, and the cement comprises the following components in percentage by weight: 70% of ordinary portland cement and 30% of slag portland cement.
In a further improvement, the mixed powder is a mixture of lithium slag powder, coal powder, silicon powder and straw powder, and the weight percentages of the components in the mixed powder are as follows: 30% of lithium slag powder, 20% of coal powder, 20% of silicon powder and 30% of straw powder.
In a further improvement, the additive comprises a water reducing agent, a polystyrene butadiene copolymer, a silicone-acrylate emulsion, latex powder and resin.
In a further improvement, the asphalt comprises matrix asphalt, furfural extract oil, styrene butadiene rubber, a stabilizer, a viscosity reducer, an infrared absorbent and water, and the asphalt comprises the following components in percentage by weight: 55% of matrix asphalt, 5% of furfural extract oil, 5% of styrene butadiene rubber, 8% of stabilizing agent, 5% of viscosity reducer, 2% of infrared absorbent and 20% of water.
In a further improvement, the preparation method comprises the following steps:
step 1: preparing recycled aggregate; the method comprises the steps of collecting waste concrete, waste bricks and sand ash waste generated by construction in a building site as raw materials, conveying the raw materials to a crushing device for crushing, screening the crushed raw materials, removing impurities such as metal objects and wood blocks in the raw materials in the screening process to obtain primary recycled aggregate, screening the aggregate again to separate coarse auxiliary materials from fine aggregate, and simultaneously placing the recycled aggregate into a closed container with the relative humidity of 80% and the volume concentration of carbon dioxide of 90% for carbon reinforcement treatment to obtain the recycled aggregate;
step 2: adding ordinary portland cement and slag portland cement in cement into a stirring reaction kettle of concrete according to a proportion, simultaneously adding mixed powder, an additive, an epoxy resin adhesive and water which are prepared according to a proportion into the reaction kettle for internal stirring, wherein the stirring time is 40min, and the rotating speed is as follows: 1000 r/min to obtain a cement mixture;
and 3, adding the recycled aggregate obtained in the step 1, asphalt and sand stone into a stirring reaction kettle, and fully stirring and mixing the recycled aggregate and the cement mixture, wherein the temperature of the recycled aggregate, the asphalt and the sand stone is increased in the stirring process: stirring for 20min at 40 ℃, and rotating speed: 600 revolutions per minute to obtain concrete slurry;
and 4, step 4: cleaning the interior of the pavement template to ensure that the pavement is made by mixing natural gravel and broken stones, so that the pavement is dry and clean and has no loose stones, dust and impurities;
and 5: pouring the concrete slurry obtained in the step (3) into a pavement template, and carrying out paving treatment to ensure that the concrete slurry can be uniformly paved in the pavement template, wherein the paving can be carried out by adopting a paving machine or manual paving, and after the paving is finished, leveling is carried out by utilizing a light compaction machine, and each square pavement is vibrated for 5 times and lasts for 10s each time;
step 6: cover plastic film after concrete slurry paves to level in the road surface template, then every 4 hours every day watering maintenance once, 8 hours watering maintenance once at night, offer an expansion joint in every five meters on road surface simultaneously, its gap width is 5mm, and the maintenance cycle is: and obtaining the high-strength porous pervious concrete pavement after 30 days.
In a further improvement, the sand added in the step 3 has a particle size of 3 cm.
Compared with the prior art, the invention has the following beneficial effects:
the invention is made by adopting recycled aggregate to match materials such as cement, asphalt and the like, has the effects of environmental protection, the pavement paved by the mixture has high strength and long service life, the asphalt and the concrete have reasonable component configuration, the production cost is low, the economic benefit is good, meanwhile, the early strength of the pavement is high, the strength can reach 80 percent after 3 days, the construction and maintenance time is greatly saved, the strength can reach more than 30MPa after 28 days, the functional requirement of a base layer structure is met, the service life of the pavement is prolonged, and the material is pollution-free.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a high strength pore space concrete road surface that permeates water which characterized in that: the cement mortar comprises, by weight, 30-45% of recycled aggregate, 30-35% of cement, 5-10% of sandstone, 3-5% of mixed powder, 2-5% of additive, 1-3% of epoxy resin adhesive, 3-5% of asphalt and 10-15% of water.
2. The high-strength porous pervious concrete pavement according to claim 1, characterized in that: the cement mortar comprises the following raw materials, by weight, 38% of recycled aggregate, 32% of cement, 7% of sand, 4% of mixed powder, 3% of additive, 2% of epoxy resin adhesive, 4% of asphalt and 10% of water.
3. A high strength porous pervious concrete pavement as claimed in claim 2, wherein: the recycled aggregate comprises fine aggregate and coarse aggregate, and the recycled aggregate comprises the following components in percentage by weight: 40% of fine aggregate and 60% of coarse aggregate, wherein the particle size of the fine aggregate is 1-5 mm, and the particle size of the coarse aggregate is 5-20 mm.
4. A high strength porous pervious concrete pavement as claimed in claim 2, wherein: the cement comprises ordinary portland cement and slag portland cement, and the cement comprises the following components in percentage by weight: 50-70% of ordinary Portland cement and 30-50% of slag Portland cement.
5. A high strength porous pervious concrete pavement as claimed in claim 2, wherein: the mixed powder is a mixture of lithium slag powder, coal powder, silicon powder and straw powder, and the weight percentages of the components in the mixed powder are as follows: 30% of lithium slag powder, 20% of coal powder, 20% of silicon powder and 30% of straw powder.
6. A high strength porous pervious concrete pavement as claimed in claim 2, wherein: the additive comprises a water reducing agent, a polystyrene butadiene copolymer, a silicone-acrylic emulsion, latex powder and resin.
7. A high strength porous pervious concrete pavement as claimed in claim 2, wherein: the asphalt comprises matrix asphalt, furfural extract oil, styrene butadiene rubber, a stabilizer, a viscosity reducer, an infrared absorbent and water, wherein the asphalt comprises the following components in percentage by weight: 55% of matrix asphalt, 5% of furfural extract oil, 5% of styrene butadiene rubber, 8% of stabilizing agent, 5% of viscosity reducer, 2% of infrared absorbent and 20% of water.
8. The method for preparing the high-strength porous pervious concrete pavement according to claim 1, characterized in that: the preparation method comprises the following steps:
step 1: preparing recycled aggregate; the method comprises the steps of collecting waste concrete, waste bricks and sand ash waste generated in construction of a building site as raw materials, conveying the raw materials to a crushing device for crushing, screening the crushed raw materials, removing impurities such as metal objects and wood blocks in the raw materials in the screening process to obtain primary recycled aggregate, screening the aggregate again to separate coarse auxiliary materials from fine aggregate, and simultaneously placing the recycled aggregate into a closed container with the relative humidity of 40% -80% and the volume concentration of carbon dioxide of 10-90% for carbon strengthening treatment to obtain the recycled aggregate;
step 2: adding ordinary portland cement and slag portland cement in cement into a stirring reaction kettle of concrete according to a certain proportion, simultaneously adding mixed powder, an additive, an epoxy resin adhesive and water which are prepared according to a certain proportion into the reaction kettle for internal stirring, wherein the stirring time is 20-40 min, and the rotating speed is as follows: 800-1000 r/min to obtain a cement mixture;
and 3, adding the recycled aggregate obtained in the step 1, asphalt and sand stone into a stirring reaction kettle, and fully stirring and mixing the recycled aggregate and the cement mixture, wherein the temperature of the recycled aggregate, the asphalt and the sand stone is increased in the stirring process: stirring for 10-20 min at 30-40 ℃, and rotating speed: 400-600 r/min to obtain concrete slurry;
and 4, step 4: cleaning the interior of the pavement template to ensure that the pavement is made by mixing natural gravel and broken stones, so that the pavement is dry and clean and has no loose stones, dust and impurities;
and 5: pouring the concrete slurry obtained in the step (3) into a pavement template, and performing paving treatment to enable the concrete slurry to be uniformly paved in the pavement template, wherein paving can be performed by adopting a paver or manual paving, leveling is performed by using a light compacting machine after paving is completed, each square pavement is vibrated for 2-5 times, and each time lasts for 5-10 s;
step 6: cover plastic film after concrete slurry paves to level in the road surface template, then every 4 hours every day watering maintenance once, 8 hours watering maintenance once at night, offer an expansion joint in every five meters on road surface simultaneously, its gap width is 3 ~ 5mm, and the maintenance cycle is: and (5) 25-30 days, thus obtaining the high-strength porous pervious concrete pavement.
9. The method for preparing a high-strength porous pervious concrete pavement according to claim 8, characterized in that: the particle size of the sand added in the step 3 is 1-3 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010797784.0A CN112047701A (en) | 2020-08-10 | 2020-08-10 | High-strength porous pervious concrete pavement and preparation method thereof |
Applications Claiming Priority (1)
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| CN113896456A (en) * | 2021-10-28 | 2022-01-07 | 长安大学 | Process for preparing recycled asphalt mixture by using construction waste recycled aggregate |
| CN115073095A (en) * | 2022-07-06 | 2022-09-20 | 李清 | Low-shrinkage low-viscosity ultrahigh-strength concrete and preparation method thereof |
| CN115490490A (en) * | 2022-09-27 | 2022-12-20 | 溧阳市交通工程建设事业发展中心 | Environment-friendly asphalt concrete formula and preparation method thereof |
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