CN107032687B - High-elastic-die water-permeable environment-friendly mortar for sponge city produced by using construction waste and preparation method thereof - Google Patents
High-elastic-die water-permeable environment-friendly mortar for sponge city produced by using construction waste and preparation method thereof Download PDFInfo
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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
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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
- C04B2111/00017—Aspects relating to the protection of the environment
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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
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
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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
- 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
- C04B2111/00482—Coating or impregnation materials
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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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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- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
- C04B2111/275—Making materials water insoluble
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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
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
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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
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- C04B2111/40—Porous or lightweight materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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Abstract
The invention provides high elastic modulus permeable environment-friendly mortar for sponge cities produced by using construction waste and a preparation method thereof, wherein the preparation method comprises the following steps: manually crushing the construction waste bricks and the waste concrete, screening into two ranges of 15-20mm and 20-30mm, washing with water, airing, soaking in a sodium aluminosilicate solution, taking out and activating to obtain a regenerated active construction waste aggregate; taking sandstone, granite and limestone as raw materials, removing soil, mechanically crushing, screening into three ranges of 1-2mm, 2-5mm and 5-10mm, washing with water, and air-drying to form machine-made sand aggregate; the method comprises the steps of uniformly mixing recycled active building waste aggregate, machine-made sand aggregate and cement in a stirrer, adding a water-based epoxy resin high-viscosity grafted cementing material, continuously stirring, adding a carbon fiber net, rubber powder, quaternary ammonium salt modified bentonite, dispersible latex powder, cellulose ether, lignocellulose, a water reducer additive, a nano titanium dioxide ultraviolet absorbent and water, and uniformly mixing to obtain the high-elastic modulus water-permeable environment-friendly mortar for sponge cities produced by using the building waste.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to a preparation method for producing high-elastic-modulus water-permeable environment-friendly mortar for sponge cities by using building wastes.
Background
With the rise of the building industry brought by the rapid development of economy, the consumption of concrete is huge, the mass use of concrete not only causes the rapid shortage of natural sand and a large amount of waste building garbage, but also damages the ecological environment to the excessive exploitation of the natural sand, and the accumulation of a large amount of waste building garbage also causes great burden to the environment. There is therefore a need to find alternatives to natural sand.
The mechanical sand is prepared by removing soil from rocks and tailings, and manually performing mechanical crushing, screening and other processes to obtain rocks, mine tailings or industrial waste residue particles with the particle size of less than 4.75 mm. The machine-made sand has polyhedral edges, is coarse compared with natural sand, has strong mechanical bonding capability and better bonding force among machine-made sands, can promote the hydration of cement, and has a small amount of application in the aspect of mortar concrete. Chinese patent CN1182064C discloses a mixture of asphalt mastic and crushed stone using steel slag as coarse aggregate, which is composed of steel slag coarse base material, machine-made sand fine aggregate, mineral powder, lignin fiber stabilizer and asphalt, wherein the crushed stone combination uses steel slag to replace basalt, machine-made sand to replace natural sand, and is used as the base material of the asphalt mixture, thereby reducing the construction cost and prolonging the service life of roads. Chinese patent CN 106565175A discloses a water-permeable high-elastic modulus mortar for sponge cities, and a preparation method and an application mode thereof, wherein a part of fine aggregates are replaced by machine-made sand produced by building decoration garbage, and the machine-made sand cement stabilized macadam produced by the building decoration garbage is mixed with cement and water to obtain the machine-made sand cement stabilized macadam of the building decoration garbage, and aggregates with different sizes are utilized to play a role in stabilizing the cement. As can be seen from the above prior art, the use of machine-made sand has been gradually applied to various concretes, but its application to permeable pavements is not uncommon. The permeable pavement contains closed pores, semi-communicated pores and has the capabilities of timely water seepage, water storage and water purification, so that the permeable pavement has higher requirements on the shape, size and bonding condition of aggregate, and the elasticity and the mechanical property of the permeable pavement are improved.
The invention takes the recycled active building rubbish aggregate and the machine-made sand as the aggregate, preferably selects the high-viscosity graft cementing material as the binder and assists other auxiliary agents to obtain the high-elastic modulus permeable environment-friendly mortar.
Disclosure of Invention
The invention aims to solve the technical problem of providing high-elastic modulus water-permeable environment-friendly mortar for sponge cities produced by using construction waste and a preparation method thereof.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the high-elastic modulus water-permeable environment-friendly mortar for sponge cities is produced by using building wastes, and is characterized in that the components of the high-elastic modulus water-permeable environment-friendly mortar for sponge cities are produced by using the building wastes, according to the parts by weight, comprises 400 parts of recycled active construction waste aggregate, 1500 parts of machine-made sand aggregate, 500 parts of cement 300-doped materials, 5-10 parts of admixture, 5-15 parts of high-viscosity graft cementing material, 0.1-0.3 part of ultraviolet absorbent and 200 parts of water 150-doped materials, the particle size of the recycled active construction waste aggregate is 15-30mm, the raw materials of the machine-made sand aggregate are sandstone, granite and limestone, the grain size of the machine-made sand aggregate is 5-10mm, the admixture comprises a carbon fiber net, rubber powder and quaternary ammonium salt modified bentonite, the high-viscosity graft cementing material is water-based epoxy resin, and the ultraviolet absorbent is nano titanium dioxide.
Preferably, the additive also comprises dispersible latex powder, cellulose ether, lignocellulose and a water reducing agent.
The invention also provides a preparation method for producing the high-elastic-modulus water-permeable environment-friendly mortar for sponge cities by using the construction wastes, which is characterized by comprising the following steps of: the method comprises the following steps:
(1) manually crushing the construction waste bricks and the waste concrete, screening into two ranges of 15-20mm and 20-30mm, washing with water, airing to form a regenerated aggregate, soaking the regenerated aggregate in a sodium aluminosilicate solution for 2-6h, taking out, airing, heating and activating to obtain a regenerated active construction waste aggregate;
(2) taking sandstone, granite and limestone as raw materials, removing soil, mechanically crushing, screening into three ranges of 1-2mm, 2-5mm and 5-10mm, washing with water, and air-drying to form machine-made sand aggregate;
(3) and (3) uniformly mixing the regenerated active building waste aggregate prepared in the step (1), the machine-made sand aggregate prepared in the step (2) and cement in a stirrer, adding the high-viscosity grafted cementing material, continuously stirring, adding the additive and the ultraviolet absorbent, and uniformly mixing to obtain the high-elastic-modulus water-permeable environment-friendly mortar for sponge cities produced by using the building waste.
Preferably, in the step (1), the temperature for heating and activating is 500-800 ℃.
Preferably, in the step (2), the mass ratio of the sandstone, the granite and the limestone is 1:1: 1.
Preferably, in the step (3), the admixture comprises a carbon fiber net, rubber powder, quaternary ammonium salt modified bentonite, dispersible latex powder, cellulose ether, lignocellulose and a water reducing agent, and the area of the carbon fiber net is not less than 5 × 5 cm.
Preferably, the additive comprises, by weight, 5-10 parts of a carbon fiber net, 3-7 parts of rubber powder, 5-10 parts of quaternary ammonium salt modified bentonite, 10-15 parts of dispersible latex powder, 8-15 parts of cellulose ether, 6-10 parts of lignocellulose and 3-5 parts of a water reducing agent.
Preferably, in the step (3), the high-viscosity graft cement is water-based epoxy resin, and the ultraviolet absorber is nano titanium dioxide.
Preferably, in the step (3), the components for producing the high-elastic modulus water-permeable environment-friendly mortar for sponge cities by using the construction wastes comprise 400 parts by weight of recycled active construction waste aggregates, 1500 parts by weight of machine-made sand aggregates, 500 parts by weight of cement, 5-10 parts by weight of additives, 5-15 parts by weight of high-viscosity graft cementing materials, 0.1-0.3 part by weight of ultraviolet absorbers and 200 parts by weight of water.
Preferably, in the step (3), the porosity of the high-elastic modulus water-permeable environment-friendly mortar for sponge cities produced by using the construction waste is 17-22%.
Compared with the prior art, the invention has the following beneficial effects:
(1) in the high-elastic-modulus water-permeable environment-friendly mortar for sponge city production by using construction waste, the recycled active construction waste aggregate and the machine-made sand aggregate are respectively used as coarse aggregate and fine aggregate, and the recycled active construction waste aggregate and the machine-made sand aggregate are subjected to multi-stage screening, so that the porosity of the environment-friendly mortar is controlled, the closed pores, semi-communicated pores and communicated pores in the environment-friendly mortar are adjusted, and the water permeability, water storage and water purification capabilities are controlled.
(2) The high-elastic modulus water-permeable environment-friendly mortar for sponge city production by using building waste contains a carbon fiber net, rubber powder and quaternary ammonium salt modified bentonite, wherein the carbon fiber net can improve the toughness and tensile strength of the mortar, the rubber powder can improve the elastic modulus of the mortar, the quaternary ammonium salt modified bentonite can improve the bending strength of the mortar, and the environment-friendly mortar also contains dispersible latex powder, cellulose ether, lignocellulose and a water reducing agent, so that the mechanical property and the homogeneity of the mortar are further stabilized, and the prepared environment-friendly mortar is good in dispersibility, uniformity and stability.
(3) The compressive strength, the breaking strength, the porosity, the water permeability coefficient, the wear resistance and the like of the high-elastic-mold water-permeable environment-friendly mortar for sponge cities produced by the invention meet CJJ/T135-2009 'permeable concrete pavement technical rules', and simultaneously show the advantages of strong toughness, high impact resistance, good elasticity and the like, thereby playing a good promoting role in the application and development of high-performance comfortable high-elastic-mold durable pavements in sponge city construction.
Detailed Description
The present invention will be described in detail with reference to specific embodiments, which are illustrative of the invention and are not to be construed as limiting the invention.
Example 1:
(1) the construction waste brick and the waste concrete are manually crushed and screened into two ranges of 15-20mm and 20-30mm, the recycled aggregate is formed through washing and airing, the recycled aggregate is soaked in a sodium aluminosilicate solution for 2 hours, the recycled aggregate is taken out and dried, and the recycled active construction waste aggregate is obtained through heating and activating for 2 hours at 500 ℃.
(2) Taking sandstone, granite and limestone with the mass ratio of 1:1:1 as raw materials, removing soil, mechanically crushing, screening into three ranges of 1-2mm, 2-5mm and 5-10mm, washing with water, and airing to form the machine-made sand aggregate.
(3) According to parts by weight, 5 parts of carbon fiber net with the area not less than 5 multiplied by 5cm, 3 parts of rubber powder, 5 parts of quaternary ammonium salt modified bentonite, 10 parts of dispersible latex powder, 8 parts of cellulose ether, 6 parts of lignocellulose and 3 parts of water reducing agent are uniformly mixed to form the admixture.
(4) The method comprises the following steps of uniformly mixing recycled active building rubbish aggregate, machine-made sand aggregate and cement in a stirrer, adding a water-based epoxy resin high-viscosity graft cementing material, continuously stirring, adding an additive, a nano titanium dioxide ultraviolet absorbent and water, and uniformly mixing to obtain the high-elastic modulus water-permeable environment-friendly mortar for sponge cities produced by using the building rubbish, wherein the components of the high-elastic modulus water-permeable environment-friendly mortar for sponge cities produced by using the building rubbish comprise 400 parts by weight of the recycled active building rubbish aggregate, 1500 parts by weight of the machine-made sand aggregate, 300 parts by weight of the cement, 5 parts by weight of the additive, 5 parts by weight of the high-viscosity graft cementing material, 0.1 part by weight of the ultraviolet absorbent and 150 parts by weight.
Example 2:
(1) the construction waste brick and the waste concrete are manually crushed and screened into two ranges of 15-20mm and 20-30mm, the recycled aggregate is formed through washing and airing, the recycled aggregate is soaked in a sodium aluminosilicate solution for 6 hours, the recycled aggregate is taken out and aired, and the recycled active construction waste aggregate is obtained through heating and activating at 800 ℃ for 3 hours.
(2) Taking sandstone, granite and limestone with the mass ratio of 1:1:1 as raw materials, removing soil, mechanically crushing, screening into three ranges of 1-2mm, 2-5mm and 5-10mm, washing with water, and airing to form the machine-made sand aggregate.
(3) According to parts by weight, 10 parts of carbon fiber net with the area not less than 5 multiplied by 5cm, 7 parts of rubber powder, 10 parts of quaternary ammonium salt modified bentonite, 15 parts of dispersible latex powder, 15 parts of cellulose ether, 10 parts of lignocellulose and 5 parts of water reducing agent are uniformly mixed to form the admixture.
(4) The method comprises the following steps of uniformly mixing recycled active building rubbish aggregate, machine-made sand aggregate and cement in a stirrer, adding a water-based epoxy resin high-viscosity graft cementing material, continuously stirring, adding an additive, a nano titanium dioxide ultraviolet absorbent and water, and uniformly mixing to obtain the high-elastic modulus water-permeable environment-friendly mortar for sponge cities produced by using the building rubbish, wherein the components of the high-elastic modulus water-permeable environment-friendly mortar for sponge cities produced by using the building rubbish comprise, by weight, 400 parts of the recycled active building rubbish aggregate, 1500 parts of the machine-made sand aggregate, 500 parts of the cement, 10 parts of the additive, 15 parts of the high-viscosity graft cementing material, 0.3 part of the ultraviolet absorbent and 200 parts of the water.
Example 3:
(1) the construction waste brick and the waste concrete are manually crushed and screened into two ranges of 15-20mm and 20-30mm, the recycled aggregate is formed through washing and airing, the recycled aggregate is soaked in a sodium aluminosilicate solution for 4 hours, the recycled aggregate is taken out and dried, and the recycled active construction waste aggregate is obtained through heating and activating for 2.5 hours at the temperature of 600 ℃.
(2) Taking sandstone, granite and limestone with the mass ratio of 1:1:1 as raw materials, removing soil, mechanically crushing, screening into three ranges of 1-2mm, 2-5mm and 5-10mm, washing with water, and airing to form the machine-made sand aggregate.
(3) According to parts by weight, 8 parts of carbon fiber net with the area not less than 5 multiplied by 5cm, 5 parts of rubber powder, 7 parts of quaternary ammonium salt modified bentonite, 13 parts of dispersible latex powder, 10 parts of cellulose ether, 8 parts of lignocellulose and 4 parts of water reducing agent are uniformly mixed to form the admixture.
(4) The method comprises the following steps of uniformly mixing recycled active building rubbish aggregate, machine-made sand aggregate and cement in a stirrer, adding a water-based epoxy resin high-viscosity grafted cementing material, continuously stirring, adding an additive, a nano titanium dioxide ultraviolet absorbent and water, and uniformly mixing to obtain the high-elastic modulus water-permeable environment-friendly mortar for sponge cities, wherein the components of the high-elastic modulus water-permeable environment-friendly mortar for sponge cities, which are produced by using the building rubbish, comprise 400 parts by weight of the recycled active building rubbish aggregate, 1500 parts by weight of the machine-made sand aggregate, 400 parts by weight of the cement, 8 parts by weight of the additive, 8 parts by weight of the high-viscosity grafted cementing material, 0.2 part by weight of the ultraviolet absorbent and 170 parts by weight of the.
Example 4:
(1) the construction waste brick and the waste concrete are manually crushed and screened into two ranges of 15-20mm and 20-30mm, the recycled aggregate is formed through washing and airing, the recycled aggregate is soaked in a sodium aluminosilicate solution for 5 hours, the recycled aggregate is taken out and dried, and the recycled active construction waste aggregate is obtained through heating and activating for 2.5 hours at 650 ℃.
(2) Taking sandstone, granite and limestone with the mass ratio of 1:1:1 as raw materials, removing soil, mechanically crushing, screening into three ranges of 1-2mm, 2-5mm and 5-10mm, washing with water, and airing to form the machine-made sand aggregate.
(3) According to parts by weight, 9 parts of carbon fiber net with the area not less than 5 multiplied by 5cm, 5 parts of rubber powder, 8 parts of quaternary ammonium salt modified bentonite, 13 parts of dispersible latex powder, 12 parts of cellulose ether, 7 parts of lignocellulose and 3 parts of water reducing agent are uniformly mixed to form the admixture.
(4) The method comprises the following steps of uniformly mixing recycled active building rubbish aggregate, machine-made sand aggregate and cement in a stirrer, adding a water-based epoxy resin high-viscosity graft cementing material, continuously stirring, adding an additive, a nano titanium dioxide ultraviolet absorbent and water, and uniformly mixing to obtain the high-elastic modulus water-permeable environment-friendly mortar for sponge cities, wherein the components of the high-elastic modulus water-permeable environment-friendly mortar for sponge cities, which are produced by using the building rubbish, comprise 400 parts by weight of the recycled active building rubbish aggregate, 1500 parts by weight of the machine-made sand aggregate, 350 parts by weight of the cement, 7 parts by weight of the additive, 6 parts by weight of the high-viscosity graft cementing material, 0.3 part by weight of the ultraviolet absorbent and 165 parts by weight of the.
Example 5:
(1) the construction waste brick and the waste concrete are manually crushed and screened into two ranges of 15-20mm and 20-30mm, the recycled aggregate is formed through washing and airing, the recycled aggregate is soaked in a sodium aluminosilicate solution for 5 hours, the recycled aggregate is taken out and aired, and the recycled active construction waste aggregate is obtained through heating and activating at 750 ℃ for 3 hours.
(2) Taking sandstone, granite and limestone with the mass ratio of 1:1:1 as raw materials, removing soil, mechanically crushing, screening into three ranges of 1-2mm, 2-5mm and 5-10mm, washing with water, and airing to form the machine-made sand aggregate.
(3) According to parts by weight, 9 parts of carbon fiber net with the area not less than 5 multiplied by 5cm, 6 parts of rubber powder, 7 parts of quaternary ammonium salt modified bentonite, 14 parts of dispersible latex powder, 13 parts of cellulose ether, 9 parts of lignocellulose and 3 parts of water reducing agent are uniformly mixed to form the admixture.
(4) The method comprises the following steps of uniformly mixing recycled active building rubbish aggregate, machine-made sand aggregate and cement in a stirrer, adding a water-based epoxy resin high-viscosity grafted cementing material, continuously stirring, adding an additive, a nano titanium dioxide ultraviolet absorbent and water, and uniformly mixing to obtain the high-elastic modulus water-permeable environment-friendly mortar for sponge cities, wherein the components of the high-elastic modulus water-permeable environment-friendly mortar for sponge cities, which are produced by using the building rubbish, comprise 400 parts by weight of the recycled active building rubbish aggregate, 1500 parts by weight of the machine-made sand aggregate, 450 parts by weight of the cement, 9 parts by weight of the additive, 13 parts by weight of the high-viscosity grafted cementing material, 0.2 part by weight of the ultraviolet absorbent and 170 parts by weight of the.
Example 6:
(1) the construction waste brick and the waste concrete are manually crushed and screened into two ranges of 15-20mm and 20-30mm, the recycled aggregate is formed through washing and airing, the recycled aggregate is soaked in a sodium aluminosilicate solution for 3 hours, the recycled aggregate is taken out and dried, and the recycled active construction waste aggregate is obtained through heating and activating for 2 hours at the temperature of 600 ℃.
(2) Taking sandstone, granite and limestone with the mass ratio of 1:1:1 as raw materials, removing soil, mechanically crushing, screening into three ranges of 1-2mm, 2-5mm and 5-10mm, washing with water, and airing to form the machine-made sand aggregate.
(3) According to parts by weight, 8 parts of carbon fiber net with the area not less than 5 multiplied by 5cm, 4 parts of rubber powder, 6 parts of quaternary ammonium salt modified bentonite, 14 parts of dispersible latex powder, 13 parts of cellulose ether, 9 parts of lignocellulose and 5 parts of water reducing agent are uniformly mixed to form the admixture.
(4) The method comprises the following steps of uniformly mixing recycled active building rubbish aggregate, machine-made sand aggregate and cement in a stirrer, adding a water-based epoxy resin high-viscosity grafted cementing material, continuously stirring, adding an additive, a nano titanium dioxide ultraviolet absorbent and water, and uniformly mixing to obtain the high-elastic modulus water-permeable environment-friendly mortar for sponge cities produced by using the building rubbish, wherein the components of the high-elastic modulus water-permeable environment-friendly mortar for sponge cities produced by using the building rubbish comprise, by weight, 400 parts of the recycled active building rubbish aggregate, 1500 parts of the machine-made sand aggregate, 500 parts of the cement, 8 parts of the additive, 13 parts of the high-viscosity grafted cementing material, 0.3 part of the ultraviolet absorbent and 200 parts of the water.
According to the requirements of cement mortar strength dry shrinkage, detection method and glue powder polyphenyl particle external wall thermal insulation system, through detection, the results of the compression strength, the breaking strength, the bonding strength, the water absorption capacity, the dry shrinkage rate, the water resistance and the weather resistance of the high elastic modulus permeable environment-friendly mortar for sponge cities prepared in the embodiments 1 to 6 are as follows:
the above table shows that the compressive strength, the breaking strength, the porosity, the water permeability coefficient, the wear resistance and the like of the high-elastic-modulus water-permeable environment-friendly mortar for sponge city production by using the construction waste conform to CJJ/T135-2009 technical Specification for water-permeable concrete pavement, and simultaneously show the advantages of strong toughness, high impact resistance, good elasticity and the like.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (8)
1. The high-elasticity water-permeable environment-friendly mortar for sponge cities is produced by utilizing construction wastes, and is characterized in that the components of the high-elasticity water-permeable environment-friendly mortar for sponge cities are produced by utilizing the construction wastes, according to the parts by weight, comprises 400 parts of recycled active construction waste aggregate, 1500 parts of machine-made sand aggregate, 500 parts of cement 300-doped materials, 5-10 parts of admixture, 5-15 parts of high-viscosity graft cementing material, 0.1-0.3 part of ultraviolet absorbent and 200 parts of water 150-doped materials, the particle size of the recycled active construction waste aggregate is 15-30mm, the raw materials of the machine-made sand aggregate are sandstone, granite and limestone, the grain size of the machine-made sand aggregate is 5-10mm, the admixture comprises a carbon fiber net, rubber powder and quaternary ammonium salt modified bentonite, the high-viscosity grafted cementing material is water-based epoxy resin, and the ultraviolet absorbent is nano titanium dioxide;
the recycled active building waste aggregate is prepared by manually crushing building waste bricks and waste concrete, screening the crushed building waste bricks and waste concrete into two ranges of 15-20mm and 20-30mm, washing and airing to form recycled aggregate, soaking the recycled aggregate in a sodium aluminosilicate solution for 2-6 hours, taking out and airing, and heating and activating the recycled active building waste aggregate;
the machine-made sand aggregate is prepared by taking sandstone, granite and limestone as raw materials, removing soil, mechanically crushing, screening into three ranges of 1-2mm, 2-5mm and 5-10mm, washing with water and airing.
2. The high-elasticity water-permeable environment-friendly mortar for sponge cities produced by using construction wastes as claimed in claim 1, wherein the additive further comprises dispersible latex powder, cellulose ether, lignocellulose and a water reducing agent.
3. A preparation method for producing high-elasticity water-permeable environment-friendly mortar for sponge cities by using construction waste is characterized by comprising the following steps: the method comprises the following steps:
(1) manually crushing the construction waste bricks and the waste concrete, screening into two ranges of 15-20mm and 20-30mm, washing with water, airing to form a regenerated aggregate, soaking the regenerated aggregate in a sodium aluminosilicate solution for 2-6h, taking out, airing, heating and activating to obtain a regenerated active construction waste aggregate;
(2) taking sandstone, granite and limestone as raw materials, removing soil, mechanically crushing, screening into three ranges of 1-2mm, 2-5mm and 5-10mm, washing with water, and air-drying to form machine-made sand aggregate;
(3) uniformly mixing the regenerated active construction waste aggregate prepared in the step (1), the machine-made sand aggregate prepared in the step (2) and cement in a stirrer, adding a high-viscosity grafted cementing material, continuously stirring, adding an additive and nano titanium dioxide, and uniformly mixing to obtain the high-elasticity water-permeable environment-friendly mortar for sponge cities produced by the construction waste;
the high-viscosity grafted cementing material is water-based epoxy resin; the additive comprises, by weight, 5-10 parts of a carbon fiber net, 3-7 parts of rubber powder, 5-10 parts of quaternary ammonium salt modified bentonite, 10-15 parts of dispersible latex powder, 8-15 parts of cellulose ether, 6-10 parts of lignocellulose and 3-5 parts of a water reducing agent.
4. The preparation method of the high-elasticity water-permeable environment-friendly mortar for producing the sponge city by using the construction waste as claimed in claim 3, which is characterized by comprising the following steps: in the step (1), the temperature for heating and activating is 500-800 ℃.
5. The preparation method of the high-elasticity water-permeable environment-friendly mortar for producing the sponge city by using the construction waste as claimed in claim 3, which is characterized by comprising the following steps: in the step (2), the mass ratio of the sandstone, the granite and the limestone is 1:1: 1.
6. The preparation method of the high-elasticity water-permeable environment-friendly mortar for producing the sponge city by using the construction waste as claimed in claim 3, which is characterized by comprising the following steps: in the step (3), the admixture comprises a carbon fiber net, rubber powder, quaternary ammonium salt modified bentonite, dispersible latex powder, cellulose ether, lignocellulose and a water reducing agent, and the area of the carbon fiber net is not less than 5 multiplied by 5 cm.
7. The preparation method of the high-elasticity water-permeable environment-friendly mortar for producing the sponge city by using the construction waste as claimed in claim 3, which is characterized by comprising the following steps: in the step (3), the components of the high-elasticity water-permeable environment-friendly mortar for sponge cities produced by the construction wastes comprise 400 parts by weight of recycled active construction waste aggregate, 1500 parts by weight of machine-made sand aggregate, 500 parts by weight of cement 300-containing organic solvent, 5-10 parts by weight of additive, 5-15 parts by weight of high-viscosity graft cementing material, 0.1-0.3 part by weight of ultraviolet absorbent and 200 parts by weight of water 150-containing organic solvent.
8. The preparation method of the high-elasticity water-permeable environment-friendly mortar for producing the sponge city by using the construction waste as claimed in claim 3, which is characterized by comprising the following steps: in the step (3), the porosity of the high-elasticity water-permeable environment-friendly mortar for sponge cities produced by using the construction waste is 17-22%.
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