CN113429166A - Compression-resistant concrete and preparation method thereof - Google Patents
Compression-resistant concrete and preparation method thereof Download PDFInfo
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- CN113429166A CN113429166A CN202110704454.7A CN202110704454A CN113429166A CN 113429166 A CN113429166 A CN 113429166A CN 202110704454 A CN202110704454 A CN 202110704454A CN 113429166 A CN113429166 A CN 113429166A
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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
- 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 relates to compression-resistant concrete and a preparation method thereof. The compression-resistant concrete consists of cement, sand, water, a porous aluminum-containing material, calcium sulfate whiskers, an SE-10 emulsifier, coal ash and a surface modifier, the porous aluminum-containing material is prepared by reacting aluminum ash, water, acrylamide, methylene bisacrylamide, 184 photoinitiator, SE-10 emulsifier, urethane acrylate and epoxy acrylate, the calcium sulfate whisker is prepared by the reaction of waste polyester fiber, calcium acetate aqueous solution, dilute sulfuric acid, polyacrylamide, polyvinyl alcohol 1788 and SE-10 emulsifier, the surface modifier is prepared by reacting aliphatic polyurethane acrylate, hydroquinone, triethylamine, maleic anhydride, fumed silica, ethylene diamine tetraacetic acid tetrasodium, cumene hydroperoxide, hyperbranched polyester acrylate, pentaerythritol tetraacrylate, polyethylene glycol methacrylate, modified epoxy acrylate oligomer and SE-10 emulsifier. The compression-resistant concrete provided by the invention has excellent compression resistance.
Description
Technical Field
The invention relates to the field of concrete, in particular to compression-resistant concrete and a preparation method thereof.
Background
With the rapid development of science and technology, the performance index requirements of the market on materials are continuously improved, and for conventional material concrete, people expect that the concrete material meets the existing basic mechanical performance index, and expect that the compression resistance of the concrete is further improved so as to adapt to the high-end requirements of special market groups. In order to further improve the compressive properties of concrete materials, suppliers in the concrete field have called about the research and development of the theoretical and practical application of the depth of the press-resistant concrete materials by researchers in the relevant field. Since the requirement of the common concrete material on the compression resistance index is low, the concrete needs to be improved in terms of high compression resistance.
Disclosure of Invention
The invention aims to provide compression-resistant concrete which is prepared from cement, sand, water, a porous aluminum-containing material, calcium sulfate whiskers, an SE-10 emulsifier, coal ash and a surface modifier and has excellent compression resistance.
The invention also aims to provide a preparation method of the compression-resistant concrete.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the compression-resistant concrete comprises, by mass, 27: 9-18: 12-30: 10-21: 6-18: 1-5: 9-17: 2-13 cement, sand, water, a porous aluminum-containing material, calcium sulfate whiskers, an SE-10 emulsifier, coal ash and a surface modifier; the porous aluminum-containing material is prepared by reacting 30: 100-160: 21-27: 0.09-2: 0.09-0.3: 5-11: 7-16: 9-20 parts by mass of aluminum ash, water, acrylamide, methylene bisacrylamide, 184 photoinitiator, SE-10 emulsifier, urethane acrylate and epoxy acrylate; the calcium sulfate whisker is prepared by reacting waste polyester fibers, a calcium acetate aqueous solution, dilute sulfuric acid, polyacrylamide, polyvinyl alcohol 1788 and an SE-10 emulsifier, wherein the mass ratio of the waste polyester fibers to the calcium sulfate whisker is 10: 120-200: 160-320: 0.3-2: 0.1-1: 2-6; the surface modifier is prepared by reacting 8: 0.02-0.1: 0.01-0.1: 0.3-5: 0.6-5: 0.02-0.1: 9-17: 0.01-0.06: 12-23: 9-21: 3-11 aliphatic urethane acrylate, hydroquinone, triethylamine, maleic anhydride, fumed silica, tetrasodium ethylenediamine tetraacetate, cumene hydroperoxide, hyperbranched polyester acrylate, pentaerythritol tetraacrylate, polyethylene glycol methacrylate, modified epoxy acrylate oligomer and SE-10 emulsifier.
Preferably, the mass part ratio of the cement, the sand, the water, the porous aluminum-containing material, the calcium sulfate whiskers, the SE-10 emulsifier, the coal ash and the surface modifier is 27:13:27:18:14:2.8:13.6: 9.
The preparation method of the compression-resistant concrete comprises the following steps:
(1) adding aliphatic polyurethane acrylate, hydroquinone, triethylamine, maleic anhydride, fumed silica, ethylene diamine tetraacetic acid tetrasodium, hyperbranched polyester acrylate, pentaerythritol tetraacrylate, polyethylene glycol methacrylate, modified epoxy acrylate oligomer and SE-10 emulsifier into a reaction kettle, reacting for 25-200 min under the condition of maintaining the mixing temperature of the system at 60-100 ℃, adding cumene hydroperoxide into the reaction kettle when the materials are cooled to 25 ℃, and mixing for 65min under the condition of maintaining the mixing temperature of the system at 25 ℃ to obtain a surface modifier; the aliphatic polyurethane acrylate, the hyperbranched polyester acrylate and the modified epoxy acrylate oligomer aim at improving the surface interface performance and the crosslinking strength among materials;
(2) adding waste polyester fibers and a calcium acetate aqueous solution into a hydrothermal reaction kettle, treating for 15-40 min while maintaining the temperature of the hydrothermal reaction kettle at 120 ℃, adding polyacrylamide, polyvinyl alcohol 1788 and an SE-10 emulsifier into the hydrothermal reaction kettle, treating for 20-55 min while maintaining the temperature of the hydrothermal reaction kettle at 120 ℃, transferring the material into the reaction kettle after cooling the material, maintaining the stirring rate of the reaction kettle at 80r/min, adding dilute sulfuric acid into the reaction kettle at the normal temperature at the adding rate of 0.02 mass part/min, continuing to perform aging reaction for 8-15 h while maintaining the reaction conditions after the addition of the dilute sulfuric acid is finished, filtering the material, washing with water for 3 times, washing with ethanol for 2 times, performing heat treatment on the product at 100 ℃ for 1h, performing heat treatment at 200 ℃ for 1h, performing heat treatment at 300 ℃ for 2h, performing heat treatment at 400 ℃ for 2h, performing heat treatment at 500 ℃ for 2h, performing heat treatment at 600 ℃ for 2h, carrying out heat treatment at 750 ℃ for 3h, and crushing to obtain calcium sulfate whiskers; the purpose of the waste polyester fiber is a template sacrificial agent;
(3) adding water, acrylamide, methylene bisacrylamide, 184 photoinitiator, SE-10 emulsifier, polyurethane acrylate and epoxy acrylate into a reaction kettle, stirring at 320r/min, reacting at 30 ℃ for 45min, adding aluminum ash into the reaction kettle, continuously reacting for 35-70 min under the reaction condition, irradiating the product for 30-150 s by using a 600-1000W high-pressure mercury lamp, performing heat treatment on the product at 100 ℃ for 1h, 200 ℃ for 1h, 300 ℃ for 2h, 400 ℃ for 2h, 500 ℃ for 2h, 600 ℃ for 2h, 700 ℃ for 3h and 850 ℃ for 3h to obtain the porous aluminum-containing material; the purpose of the acrylamide, the methylene bisacrylamide, the polyurethane acrylate and the epoxy acrylate is to improve the dispersibility of the aluminum ash;
(4) adding cement, sand, water, a porous aluminum-containing material, calcium sulfate whiskers, an SE-10 emulsifier, coal ash and a surface modifier into a stirrer, stirring at 53r/min, and reacting for 3-25 min under the condition of maintaining the system temperature at 25 ℃ to obtain the compression-resistant concrete.
The invention has the beneficial effects that:
1. the materials such as aliphatic polyurethane acrylate, hyperbranched polyester acrylate and modified epoxy acrylate oligomer are compounded, so that the surface interface performance of concrete materials can be improved due to functional groups on the surfaces of molecular structures of the materials, and when the raw materials are fully mixed, sealed and cured, the surface modifier can spontaneously perform crosslinking curing, so that the compressive strength of concrete is further improved;
2. after the surface and the interior of the waste polyester fiber are soaked by a calcium acetate aqueous solution, a calcium source precursor can be formed on the surface and the interior of the waste polyester fiber, the calcium precursor raw material is fully mixed, emulsified and dispersed by a mixture of polyacrylamide, polyvinyl alcohol 1788 and an SE-10 emulsifier, the material is reacted with dilute sulfuric acid, and the fibrous calcium sulfate whisker is obtained by aging, heat treatment and other procedures, so that the fibrous calcium sulfate whisker has excellent mechanical strength, toughness and filling property, and the compressive strength of concrete can be obviously improved;
3. after acrylamide, methylene bisacrylamide, polyurethane acrylate and epoxy acrylate monomers are mixed, aluminum ash is fully dispersed in a mixed solution, the viscosity of a reaction system is promoted to be continuously increased through photocuring, the high dispersibility of the aluminum ash in materials is continuously improved, meanwhile, the strength of aluminum ash-containing dispersed materials is continuously enhanced along with the progress of photocuring reaction, aluminum in the aluminum ash is gradually converted into a porous aluminum-containing material through treatment processes such as dehydration, heat treatment, thermal roasting and the like, and the compressive strength of a concrete material can be improved due to the porosity, high dispersibility and excellent toughness of the porous aluminum-containing material.
Detailed Description
The following description of specific embodiments of the present invention is provided in connection with examples to facilitate a better understanding of the present invention. These examples are intended to illustrate the invention and are not intended to limit the scope of the invention. Experimental procedures without specific conditions noted in the examples below, generally according to conditions conventional in the art or as suggested by the manufacturer; the raw materials, reagents and the like used are, unless otherwise specified, those commercially available from the conventional markets and the like. Any insubstantial changes and substitutions made by those skilled in the art based on the present invention are intended to be covered by the claims.
Example 1
The preparation method of the compression-resistant concrete comprises the following steps:
(1) weighing 8 parts of aliphatic urethane acrylate, 0.03 part of hydroquinone, 0.02 part of triethylamine, 0.5 part of maleic anhydride, 1.5 parts of fumed silica, 0.03 part of tetrasodium ethylenediamine tetraacetate, 10.6 parts of hyperbranched polyester acrylate, 0.02 part of pentaerythritol tetraacrylate, 15.3 parts of polyethylene glycol methacrylate, 16.2 parts of modified epoxy acrylate oligomer and 6.1 parts of SE-10 emulsifier, adding the mixture into a reaction kettle, reacting for 40min under the condition of maintaining the mixing temperature of the system at 78 ℃, weighing 0.04 part of cumene hydroperoxide to add into the reaction kettle when the material is cooled to 25 ℃, and mixing for 65min under the condition of maintaining the mixing temperature of the system at 25 ℃ to obtain a surface modifier;
(2) weighing 10 parts of waste polyester fiber and 165 parts of calcium acetate aqueous solution, adding the waste polyester fiber and the 165 parts of calcium acetate aqueous solution into a hydrothermal reaction kettle, maintaining the temperature of the hydrothermal reaction kettle at 120 ℃ for 23min, weighing 0.8 part of polyacrylamide, 0.5 part of polyvinyl alcohol 1788 and 3.9 parts of SE-10 emulsifier, adding the mixture into the hydrothermal reaction kettle, maintaining the temperature of the hydrothermal reaction kettle at 120 ℃ for 35min, transferring the mixture into the reaction kettle after the mixture is cooled, maintaining the stirring rate of the reaction kettle at 80r/min, adding 270 parts of dilute sulfuric acid into the reaction kettle at normal temperature at the adding rate of 0.02 part/min, continuing to perform aging reaction for 10h under the reaction condition after the dilute sulfuric acid is added, filtering the mixture, washing the mixture for 3 times by water and washing the mixture for 2 times by ethanol, performing heat treatment on the product for 1h at 100 ℃, performing heat treatment for 1h at 200 ℃, performing heat treatment for 2h at 300 ℃, performing heat treatment for 2h at 400 ℃, performing heat treatment for 2h at 500 ℃, carrying out heat treatment at 600 ℃ for 2h and at 750 ℃ for 3h, and crushing to obtain calcium sulfate whiskers;
(3) weighing 130 parts of water, 25 parts of acrylamide, 0.11 part of methylene bisacrylamide, 0.12 part of 184 photoinitiator, 8.6 parts of SE-10 emulsifier, 13.3 parts of urethane acrylate and 15.6 parts of epoxy acrylate, adding into a reaction kettle, stirring at 320r/min and 30 ℃ for 45min, adding 30 parts of aluminum ash into the reaction kettle, continuing to react for 50min under the reaction condition, irradiating the product by a 800W high-pressure mercury lamp for 50s, performing 100 ℃ heat treatment on the product for 1h, 200 ℃ heat treatment for 1h, 300 ℃ heat treatment for 2h, 400 ℃ heat treatment for 2h, 500 ℃ heat treatment for 2h, 600 ℃ heat treatment for 2h, 700 ℃ heat treatment for 3h and 850 ℃ heat treatment for 3h to obtain the porous aluminum-containing material;
(4) 27 parts of cement, 13 parts of sand, 27 parts of water, 18 parts of porous aluminum-containing material, 14 parts of calcium sulfate whisker, 2.8 parts of SE-10 emulsifier, 13.6 parts of coal ash and 9 parts of surface modifier are weighed and added into a stirrer, the stirring speed is 53r/min, and the reaction is carried out for 13min under the condition that the system temperature is kept at 25 ℃, so that the compression-resistant concrete is obtained.
Example 2
The preparation method of the compression-resistant concrete comprises the following steps:
(1) weighing 8 parts of aliphatic urethane acrylate, 0.02 part of hydroquinone, 0.01 part of triethylamine, 0.3 part of maleic anhydride, 0.6 part of fumed silica, 0.02 part of tetrasodium ethylenediamine tetraacetate, 9 parts of hyperbranched polyester acrylate, 0.01 part of pentaerythritol tetraacrylate, 12 parts of polyethylene glycol methacrylate, 9 parts of modified epoxy acrylate oligomer and 3 parts of SE-10 emulsifier, adding the obtained mixture into a reaction kettle, reacting for 200min under the condition of maintaining the mixing temperature of a system at 60 ℃, weighing 0.02 part of cumene hydroperoxide when the material is cooled to 25 ℃, adding the obtained product into the reaction kettle, and maintaining the mixing temperature of the system at 25 ℃ for mixing for 65min to obtain a surface modifier;
(2) weighing 10 parts of waste polyester fiber and 120 parts of calcium acetate aqueous solution, adding the waste polyester fiber and 120 parts of calcium acetate aqueous solution into a hydrothermal reaction kettle, maintaining the temperature of the hydrothermal reaction kettle at 120 ℃ for 15min, weighing 0.3 part of polyacrylamide, 0.1 part of polyvinyl alcohol 1788 and 2 parts of SE-10 emulsifier, adding the mixture into the hydrothermal reaction kettle, maintaining the temperature of the hydrothermal reaction kettle at 120 ℃ for 20min, transferring the mixture into the reaction kettle after the mixture is cooled, maintaining the stirring rate of the reaction kettle at 80r/min, adding 160 parts of dilute sulfuric acid into the reaction kettle at normal temperature at the adding rate of 0.02 part/min, continuing aging reaction for 8h under the reaction condition after the dilute sulfuric acid is added, filtering the mixture, washing the mixture for 3 times by water and washing the mixture for 2 times by ethanol, thermally treating the product for 1h at 100 ℃, thermally treating the product for 1h at 200 ℃, thermally treating the product for 2h at 300 ℃, thermally treating the product for 2h at 400 ℃, and thermally treating the product for 2h at 500 ℃, carrying out heat treatment at 600 ℃ for 2h and at 750 ℃ for 3h, and crushing to obtain calcium sulfate whiskers;
(3) weighing 100 parts of water, 21 parts of acrylamide, 0.09 part of methylene bisacrylamide, 0.09 part of 184 photoinitiator, 5 parts of SE-10 emulsifier, 7 parts of urethane acrylate and 9 parts of epoxy acrylate, adding the mixture into a reaction kettle, stirring at the speed of 320r/min, reacting at the temperature of 30 ℃ for 45min, adding 30 parts of aluminum ash into the reaction kettle, continuing to react for 35min under the reaction condition, irradiating the product by a 600W high-pressure mercury lamp for 150s, thermally treating the product at 100 ℃ for 1h, thermally treating the product at 200 ℃ for 1h, thermally treating the product at 300 ℃ for 2h, thermally treating the product at 400 ℃ for 2h, thermally treating the product at 500 ℃ for 2h, thermally treating the product at 600 ℃ for 2h, thermally treating the product at 700 ℃ for 3h, and thermally treating the product at 850 ℃ for 3h to obtain the porous aluminum-containing material;
(4) 27 parts of cement, 9 parts of sand, 12 parts of water, 10 parts of porous aluminum-containing material, 6 parts of calcium sulfate whisker, 1 part of SE-10 emulsifier, 9 parts of coal ash and 2 parts of surface modifier are weighed and added into a stirrer, the stirring speed is 53r/min, and the reaction is carried out for 3min under the condition that the system temperature is kept at 25 ℃, so as to obtain the compression-resistant concrete.
Example 3
The preparation method of the compression-resistant concrete comprises the following steps:
(1) weighing 8 parts of aliphatic polyurethane acrylate, 0.1 part of hydroquinone, 0.1 part of triethylamine, 5 parts of maleic anhydride, 5 parts of fumed silica, 0.1 part of tetrasodium ethylenediamine tetraacetate, 17 parts of hyperbranched polyester acrylate, 0.06 part of pentaerythritol tetraacrylate, 23 parts of polyethylene glycol methacrylate, 21 parts of modified epoxy acrylate oligomer and 11 parts of SE-10 emulsifier, adding the mixture into a reaction kettle, reacting for 25min under the condition of maintaining the mixing temperature of the system at 100 ℃, cooling the material to 25 ℃, weighing 0.1 part of cumene hydroperoxide, adding the cumene hydroperoxide into the reaction kettle, and mixing for 65min under the condition of maintaining the mixing temperature of the system at 25 ℃ to obtain a surface modifier;
(2) weighing 10 parts of waste polyester fiber and 200 parts of calcium acetate aqueous solution, adding the waste polyester fiber and 200 parts of calcium acetate aqueous solution into a hydrothermal reaction kettle, maintaining the temperature of the hydrothermal reaction kettle at 120 ℃ for 40min, weighing 2 parts of polyacrylamide, 1 part of polyvinyl alcohol 1788 and 6 parts of SE-10 emulsifier, adding the mixture into the hydrothermal reaction kettle, maintaining the temperature of the hydrothermal reaction kettle at 120 ℃ for 55min, transferring the mixture into the reaction kettle after the mixture is cooled, maintaining the stirring rate of the reaction kettle at 80r/min, adding 320 parts of dilute sulfuric acid into the reaction kettle at the normal temperature at the adding rate of 0.02 part/min, maintaining the reaction condition for continuous ageing reaction for 15h after the dilute sulfuric acid is added, filtering the mixture, washing the mixture for 3 times by water and washing the mixture for 2 times by ethanol, performing heat treatment on the product for 1h at 100 ℃, performing heat treatment for 1h at 200 ℃, performing heat treatment for 2h at 300 ℃, performing heat treatment for 2h at 400 ℃ and performing heat treatment for 2h at 500 ℃, carrying out heat treatment at 600 ℃ for 2h and at 750 ℃ for 3h, and crushing to obtain calcium sulfate whiskers;
(3) weighing 160 parts of water, 27 parts of acrylamide, 2 parts of methylene bisacrylamide, 0.3 part of 184 photoinitiator, 11 parts of SE-10 emulsifier, 16 parts of urethane acrylate and 20 parts of epoxy acrylate, adding the mixture into a reaction kettle, stirring at the speed of 320r/min, reacting at the temperature of 30 ℃ for 45min, adding 30 parts of aluminum ash into the reaction kettle, continuing to react for 70min under the reaction condition, irradiating the product by a 1000W high-pressure mercury lamp for 30s, performing heat treatment on the product at 100 ℃ for 1h, performing heat treatment at 200 ℃ for 1h, performing heat treatment at 300 ℃ for 2h, performing heat treatment at 400 ℃ for 2h, performing heat treatment at 500 ℃ for 2h, performing heat treatment at 600 ℃ for 2h, performing heat treatment at 700 ℃ for 3h, and performing heat treatment at 850 ℃ for 3h to obtain the porous aluminum-containing material;
(4) 27 parts of cement, 18 parts of sand, 30 parts of water, 21 parts of porous aluminum-containing material, 18 parts of calcium sulfate whisker, 5 parts of SE-10 emulsifier, 17 parts of coal ash and 13 parts of surface modifier are weighed and added into a stirrer, the stirring speed is 53r/min, and the reaction is carried out for 25min under the condition that the system temperature is kept at 25 ℃, so as to obtain the compression-resistant concrete.
Example 4
The preparation method of the compression-resistant concrete comprises the following steps:
(1) weighing 8 parts of aliphatic urethane acrylate, 0.03 part of hydroquinone, 0.04 part of triethylamine, 0.7 part of maleic anhydride, 0.9 part of fumed silica, 0.05 part of tetrasodium ethylenediamine tetraacetate, 9.8 parts of hyperbranched polyester acrylate, 0.03 part of pentaerythritol tetraacrylate, 13.5 parts of polyethylene glycol methacrylate, 9.7 parts of modified epoxy acrylate oligomer and 3.9 parts of SE-10 emulsifier, adding the mixture into a reaction kettle, reacting for 29min under the condition of maintaining the mixing temperature of the system at 68 ℃, weighing 0.04 part of cumene hydroperoxide to add into the reaction kettle when the material is cooled to 25 ℃, and mixing for 65min under the condition of maintaining the mixing temperature of the system at 25 ℃ to obtain a surface modifier;
(2) weighing 10 parts of waste polyester fiber and 128 parts of calcium acetate aqueous solution, adding the waste polyester fiber and 128 parts of calcium acetate aqueous solution into a hydrothermal reaction kettle, maintaining the temperature of the hydrothermal reaction kettle at 120 ℃ for 17min, weighing 0.7 part of polyacrylamide, 0.3 part of polyvinyl alcohol 1788 and 2.6 parts of SE-10 emulsifier, adding the mixture into the hydrothermal reaction kettle, maintaining the temperature of the hydrothermal reaction kettle at 120 ℃ for 26min, transferring the mixture into the reaction kettle after the mixture is cooled, maintaining the stirring rate of the reaction kettle at 80r/min, adding 172 parts of dilute sulfuric acid into the reaction kettle at the normal temperature of 0.02 part/min, maintaining the reaction condition for continuous aging reaction for 8.5h after the dilute sulfuric acid is added, filtering the mixture, washing the mixture for 3 times by water and washing the mixture for 2 times by ethanol, performing heat treatment on the product for 1h at 100 ℃, performing heat treatment for 1h at 200 ℃, performing heat treatment for 2h at 300 ℃, performing heat treatment for 2h at 400 ℃, performing heat treatment for 2h at 500 ℃, carrying out heat treatment at 600 ℃ for 2h and at 750 ℃ for 3h, and crushing to obtain calcium sulfate whiskers;
(3) weighing 120 parts of water, 23 parts of acrylamide, 0.12 part of methylene bisacrylamide, 0.14 part of 184 photoinitiator, 6.2 parts of SE-10 emulsifier, 8.9 parts of urethane acrylate and 10.6 parts of epoxy acrylate, adding the mixture into a reaction kettle, reacting at the stirring speed of 320r/min and the reaction temperature of 30 ℃ for 45min, adding 30 parts of aluminum ash into the reaction kettle, continuing to react for 38min under the reaction condition, irradiating the product by a 700W high-pressure mercury lamp for 120s, performing 100 ℃ heat treatment on the product for 1h, 200 ℃ heat treatment for 1h, 300 ℃ heat treatment for 2h, 400 ℃ heat treatment for 2h, 500 ℃ heat treatment for 2h, 600 ℃ heat treatment for 2h, 700 ℃ heat treatment for 3h and 850 ℃ heat treatment for 3h to obtain the porous aluminum-containing material;
(4) 27 parts of cement, 10.2 parts of sand, 13.7 parts of water, 12.6 parts of a porous aluminum-containing material, 8.3 parts of calcium sulfate whiskers, 2.3 parts of SE-10 emulsifier, 10.9 parts of coal ash and 3.8 parts of a surface modifier are weighed and added into a stirrer, the stirring speed is 53r/min, and the reaction is carried out for 5min under the condition that the system temperature is kept at 25 ℃, so that the compression-resistant concrete is obtained.
Example 5
The preparation method of the compression-resistant concrete comprises the following steps:
(1) weighing 8 parts of aliphatic urethane acrylate, 0.08 part of hydroquinone, 0.09 part of triethylamine, 3.8 parts of maleic anhydride, 4.1 parts of fumed silica, 0.09 part of tetrasodium ethylenediamine tetraacetate, 15.6 parts of hyperbranched polyester acrylate, 0.05 part of pentaerythritol tetraacrylate, 21.2 parts of polyethylene glycol methacrylate, 18.7 parts of modified epoxy acrylate oligomer and 9.9 parts of SE-10 emulsifier, adding the mixture into a reaction kettle, reacting for 150min under the condition of maintaining the mixing temperature of the system at 92 ℃, weighing 0.07 part of cumene hydroperoxide to add into the reaction kettle when the material is cooled to 25 ℃, and mixing for 65min under the condition of maintaining the mixing temperature of the system at 25 ℃ to obtain a surface modifier; (2) weighing 10 parts of waste polyester fiber and 190 parts of calcium acetate aqueous solution, adding the waste polyester fiber and 190 parts of calcium acetate aqueous solution into a hydrothermal reaction kettle, maintaining the temperature of the hydrothermal reaction kettle at 120 ℃ for 32min, weighing 1.7 parts of polyacrylamide, 0.8 part of polyvinyl alcohol 1788 and 5.3 parts of SE-10 emulsifier, adding the polyacrylamide, the polyvinyl alcohol 1788 and the SE-10 emulsifier into the hydrothermal reaction kettle, maintaining the temperature of the hydrothermal reaction kettle at 120 ℃ for 51min, transferring the material into the reaction kettle after the material is cooled, maintaining the stirring rate of the reaction kettle at 80r/min, adding 289 parts of dilute sulfuric acid into the reaction kettle at normal temperature at the adding rate of 0.02 part/min, continuing aging reaction for 13h under the reaction condition after the dilute sulfuric acid is added, filtering the material, washing the material for 3 times and washing the material with ethanol for 2 times, performing heat treatment at 100 ℃ for 1h, performing heat treatment at 200 ℃ for 1h, performing heat treatment at 300 ℃ for 2h, performing heat treatment at 400 ℃ for 2h, performing heat treatment at 500 ℃ for 2h, carrying out heat treatment at 600 ℃ for 2h and at 750 ℃ for 3h, and crushing to obtain calcium sulfate whiskers;
(3) weighing 140 parts of water, 25.6 parts of acrylamide, 0.21 part of methylene bisacrylamide, 0.19 part of 184 photoinitiator, 8.7 parts of SE-10 emulsifier, 13.8 parts of urethane acrylate and 17.6 parts of epoxy acrylate, adding the mixture into a reaction kettle, stirring at the speed of 320r/min and the reaction temperature of 30 ℃ for 45min, adding 30 parts of aluminum ash into the reaction kettle, continuing to react for 50min under the reaction condition, irradiating the product by a 1000W high-pressure mercury lamp for 80s, performing 100 ℃ heat treatment on the product for 1h, 200 ℃ heat treatment for 1h, 300 ℃ heat treatment for 2h, 400 ℃ heat treatment for 2h, 500 ℃ heat treatment for 2h, 600 ℃ heat treatment for 2h, 700 ℃ heat treatment for 3h and 850 ℃ heat treatment for 3h to obtain the porous aluminum-containing material;
(4) 27 parts of cement, 15 parts of sand, 26 parts of water, 18.9 parts of porous aluminum-containing material, 16.5 parts of calcium sulfate whisker, 4 parts of SE-10 emulsifier, 14.3 parts of coal ash and 11.6 parts of surface modifier are weighed and added into a stirrer, the stirring speed is 53r/min, and the reaction is carried out for 6min under the condition that the system temperature is kept at 25 ℃, so that the compression-resistant concrete is obtained.
Example 6
The preparation method of the compression-resistant concrete comprises the following steps:
(1) weighing 8 parts of aliphatic urethane acrylate, 0.05 part of hydroquinone, 0.06 part of triethylamine, 2.5 parts of maleic anhydride, 2.8 parts of fumed silica, 0.05 part of tetrasodium ethylenediamine tetraacetate, 12 parts of hyperbranched polyester acrylate, 0.03 part of pentaerythritol tetraacrylate, 16 parts of polyethylene glycol methacrylate, 15 parts of modified epoxy acrylate oligomer and 7 parts of SE-10 emulsifier, adding the obtained mixture into a reaction kettle, reacting for 100min under the condition of maintaining the mixing temperature of a system at 80 ℃, weighing 0.06 part of cumene hydroperoxide when the material is cooled to 25 ℃, adding the obtained product into the reaction kettle, and maintaining the mixing temperature of the system at 25 ℃ for mixing for 65min to obtain a surface modifier;
(2) weighing 10 parts of waste polyester fiber and 160 parts of calcium acetate aqueous solution, adding the waste polyester fiber and 160 parts of calcium acetate aqueous solution into a hydrothermal reaction kettle, maintaining the temperature of the hydrothermal reaction kettle at 120 ℃ for 21min, weighing 1.3 parts of polyacrylamide, 0.6 part of polyvinyl alcohol 1788 and 3.7 parts of SE-10 emulsifier, adding the mixture into the hydrothermal reaction kettle, maintaining the temperature of the hydrothermal reaction kettle at 120 ℃ for 38min, transferring the mixture into the reaction kettle after the mixture is cooled, maintaining the stirring rate of the reaction kettle at 80r/min, adding 220 parts of dilute sulfuric acid into the reaction kettle at the normal temperature of 0.02 part/min, continuing to perform aging reaction for 11h under the reaction condition after the dilute sulfuric acid is added, filtering the mixture, washing the mixture for 3 times by water and washing the mixture for 2 times by ethanol, performing heat treatment on the product for 1h at 100 ℃, performing heat treatment for 1h at 200 ℃, performing heat treatment for 2h at 300 ℃, performing heat treatment for 2h at 400 ℃, performing heat treatment for 2h at 500 ℃, carrying out heat treatment at 600 ℃ for 2h and at 750 ℃ for 3h, and crushing to obtain calcium sulfate whiskers;
(3) weighing 130 parts of water, 23 parts of acrylamide, 0.23 part of methylene bisacrylamide, 0.22 part of 184 photoinitiator, 8 parts of SE-10 emulsifier, 13 parts of urethane acrylate and 13 parts of epoxy acrylate, adding the mixture into a reaction kettle, stirring at the speed of 320r/min, reacting at the temperature of 30 ℃ for 45min, adding 30 parts of aluminum ash into the reaction kettle, continuing to react for 56min under the reaction condition, irradiating the product by a 900W high-pressure mercury lamp for 70s, thermally treating the product at 100 ℃ for 1h, thermally treating the product at 200 ℃ for 1h, thermally treating the product at 300 ℃ for 2h, thermally treating the product at 400 ℃ for 2h, thermally treating the product at 500 ℃ for 2h, thermally treating the product at 600 ℃ for 2h, thermally treating the product at 700 ℃ for 3h, and thermally treating the product at 850 ℃ for 3h to obtain the porous aluminum-containing material;
(4) 27 parts of cement, 12 parts of sand, 17 parts of water, 16 parts of porous aluminum-containing material, 13 parts of calcium sulfate whisker, 3 parts of SE-10 emulsifier, 12 parts of coal ash and 7 parts of surface modifier are weighed and added into a stirrer, the stirring speed is 53r/min, and the reaction is carried out for 13min under the condition that the system temperature is kept at 25 ℃, so as to obtain the compression-resistant concrete.
Comparative example 1
In this comparative example, the porous aluminum-containing material was not added, and the other components and preparation method were the same as in example 1.
Comparative example 2
In the comparative example, calcium sulfate whiskers were not added, and the other components and preparation method were the same as in example 1.
Comparative example 3
In this comparative example, the surface modifier was not added, and the other components and preparation method were the same as in example 1.
Comparative example 4
In the comparative example, the porous aluminum-containing material in example 1 was replaced with ordinary aluminum ash, and the other components and preparation method were the same as in example 1.
Comparative example 5
In the comparison example, common calcium sulfate whiskers are selected in the formula to replace the calcium sulfate whiskers in the example 1, and other components and the preparation method are the same as those in the example 1.
Comparative example 6
In the comparative example, the surface modifier in example 1 was replaced by ordinary polyacrylate, and the other components and preparation method were the same as in example 1.
The compressive strength of the compressive concrete prepared in the examples 1-6 and the comparative examples 1-6 was tested according to GB/T50081-2002, and the test results are shown in the following tables 1 and 2.
TABLE 1 Performance parameters of compression-resistant concretes prepared in examples 1 to 6
Note: cubic test piece 150mm
TABLE 2 Performance parameters of compression-resistant concretes obtained in example 1 and comparative examples 1 to 6
Note: cubic test piece 150mm
As can be seen from table 1 and table 2 above, the compressive concrete prepared by the embodiments of the present invention has excellent compressive properties, which indicates that the compressive concrete prepared by the raw materials provided by the present invention has good compressive properties; in contrast, the compression-resistant concrete prepared from the raw materials of each comparative example has poorer compression resistance. In addition, the compression-resistant concrete prepared by the embodiments of the invention has better compression resistance.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (7)
1. The compression-resistant concrete is characterized by comprising cement, sand, water, a porous aluminum-containing material, calcium sulfate whiskers, an SE-10 emulsifier, coal ash and a surface modifier, wherein the mass ratio of the cement to the sand to the water is 27: 9-18: 12-30: 10-21: 6-18: 1-5: 9-17: 2-13; the porous aluminum-containing material is prepared by reacting 30: 100-160: 21-27: 0.09-2: 0.09-0.3: 5-11: 7-16: 9-20 parts by mass of aluminum ash, water, acrylamide, methylene bisacrylamide, 184 photoinitiator, SE-10 emulsifier, urethane acrylate and epoxy acrylate; the calcium sulfate whisker is prepared by reacting waste polyester fibers, a calcium acetate aqueous solution, dilute sulfuric acid, polyacrylamide, polyvinyl alcohol 1788 and an SE-10 emulsifier, wherein the mass ratio of the waste polyester fibers to the calcium sulfate whisker is 10: 120-200: 160-320: 0.3-2: 0.1-1: 2-6; the surface modifier is prepared by reacting 8: 0.02-0.1: 0.01-0.1: 0.3-5: 0.6-5: 0.02-0.1: 9-17: 0.01-0.06: 12-23: 9-21: 3-11 aliphatic urethane acrylate, hydroquinone, triethylamine, maleic anhydride, fumed silica, tetrasodium ethylenediamine tetraacetate, cumene hydroperoxide, hyperbranched polyester acrylate, pentaerythritol tetraacrylate, polyethylene glycol methacrylate, modified epoxy acrylate oligomer and SE-10 emulsifier.
2. The compression-resistant concrete as claimed in claim 1, wherein the mass ratio of the cement, the sand, the water, the porous aluminum-containing material, the calcium sulfate whiskers, the SE-10 emulsifier, the coal ash and the surface modifier is 27:13:27:18:14:2.8:13.6: 9.
3. The compression-resistant concrete as claimed in claim 1, wherein the concentration of the aqueous solution of calcium acetate is 18% (wt.%).
4. The pressure-resistant concrete according to claim 1, wherein the dilute sulfuric acid concentration is 20% (wt.%).
5. The compression-resistant concrete as claimed in claim 1, wherein the aluminum mesh number is 1250 mesh.
6. The compression-resistant concrete as claimed in claim 1, wherein the waste polyester fiber has a length of 100 μm and a diameter of 6 μm.
7. A method for preparing a compression-resistant concrete as claimed in any one of claims 1 to 6, which comprises the steps of:
(1) adding aliphatic polyurethane acrylate, hydroquinone, triethylamine, maleic anhydride, fumed silica, ethylene diamine tetraacetic acid tetrasodium, hyperbranched polyester acrylate, pentaerythritol tetraacrylate, polyethylene glycol methacrylate, modified epoxy acrylate oligomer and SE-10 emulsifier into a reaction kettle, reacting for 25-200 min under the condition of maintaining the mixing temperature of the system at 60-100 ℃, adding cumene hydroperoxide into the reaction kettle when the materials are cooled to 25 ℃, and mixing for 65min under the condition of maintaining the mixing temperature of the system at 25 ℃ to obtain a surface modifier;
(2) adding waste polyester fibers and a calcium acetate aqueous solution into a hydrothermal reaction kettle, treating for 15-40 min while maintaining the temperature of the hydrothermal reaction kettle at 120 ℃, adding polyacrylamide, polyvinyl alcohol 1788 and an SE-10 emulsifier into the hydrothermal reaction kettle, treating for 20-55 min while maintaining the temperature of the hydrothermal reaction kettle at 120 ℃, transferring the material into the reaction kettle after cooling the material, maintaining the stirring rate of the reaction kettle at 80r/min, adding dilute sulfuric acid into the reaction kettle at the normal temperature at the adding rate of 0.02 mass part/min, continuing to perform aging reaction for 8-15 h while maintaining the reaction conditions after the addition of the dilute sulfuric acid is finished, filtering the material, washing with water for 3 times, washing with ethanol for 2 times, performing heat treatment on the product at 100 ℃ for 1h, performing heat treatment at 200 ℃ for 1h, performing heat treatment at 300 ℃ for 2h, performing heat treatment at 400 ℃ for 2h, performing heat treatment at 500 ℃ for 2h, performing heat treatment at 600 ℃ for 2h, carrying out heat treatment at 750 ℃ for 3h, and crushing to obtain calcium sulfate whiskers;
(3) adding water, acrylamide, methylene bisacrylamide, 184 photoinitiator, SE-10 emulsifier, polyurethane acrylate and epoxy acrylate into a reaction kettle, stirring at 320r/min, reacting at 30 ℃ for 45min, adding aluminum ash into the reaction kettle, continuously reacting for 35-70 min under the reaction condition, irradiating the product for 30-150 s by using a 600-1000W high-pressure mercury lamp, performing heat treatment on the product at 100 ℃ for 1h, 200 ℃ for 1h, 300 ℃ for 2h, 400 ℃ for 2h, 500 ℃ for 2h, 600 ℃ for 2h, 700 ℃ for 3h and 850 ℃ for 3h to obtain the porous aluminum-containing material;
(4) adding cement, sand, water, a porous aluminum-containing material, calcium sulfate whiskers, an SE-10 emulsifier, coal ash and a surface modifier into a stirrer, stirring at 53r/min, and reacting for 3-25 min under the condition of maintaining the system temperature at 25 ℃ to obtain the compression-resistant concrete.
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