CN109776035B - Green waterproof concrete and preparation method thereof - Google Patents
Green waterproof concrete and preparation method thereof Download PDFInfo
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- CN109776035B CN109776035B CN201910066467.9A CN201910066467A CN109776035B CN 109776035 B CN109776035 B CN 109776035B CN 201910066467 A CN201910066467 A CN 201910066467A CN 109776035 B CN109776035 B CN 109776035B
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Abstract
The invention relates to green waterproof concrete and a preparation method thereof. The green waterproof concrete is composed of cement, sand, water, an aqueous emulsion, an aqueous epoxy resin emulsion and modified iron mud, wherein the aqueous emulsion is prepared by reacting acrylic acid, acrylamide, isooctyl acrylate, methyl methacrylate, water, 2-acrylamide-2-methylpropanesulfonic acid, an SE-10 emulsifier, methylene bisacrylamide, ammonium persulfate and hydroxyl-terminated polyether modified polysiloxane, the aqueous epoxy resin emulsion is prepared by reacting NPED-20 aqueous epoxy resin, NX-8101 aqueous phenolic amine, water and an aqueous elastomer, the aqueous elastomer is prepared by reacting isooctyl acrylate, butyl acrylate, acrylic acid, low-viscosity aliphatic epoxy acrylate, 819 photoinitiator, polyethylene glycol (200) dimethacrylate and the SE-10 emulsifier, and the iron mud is prepared by reacting iron mud, a waste polyacrylamide flocculant, water-based epoxy resin emulsion and modified polysiloxane, wherein the iron mud is prepared by reacting the iron mud, the waste polyacrylamide flocculant, the iron mud and the water, The waste polyaluminium chloride flocculant is prepared by the reaction of carboxymethyl cellulose. The green waterproof concrete provided by the invention has excellent waterproof and antifreezing performances.
Description
Technical Field
The invention relates to the field of concrete, in particular to green waterproof concrete and a preparation method thereof.
Background
With the continuous improvement of living standard of people, the requirements of people and the country on environment-friendly high-performance concrete materials are continuously improved, the concrete has excellent mechanical properties, but the concrete has the problems of deviation of waterproofness and frost resistance, and the defects limit the application and expansion of the concrete in related fields. Therefore, the concrete field has called for research and development of waterproof and frost-resistant concrete materials by researchers in various fields. The common concrete material has low requirements on waterproofness and frost resistance. Therefore, concrete needs to be improved in terms of high water resistance and frost resistance.
Disclosure of Invention
The invention aims to provide green waterproof concrete which is prepared from cement, sand, water, a water-based emulsion, a water-based epoxy resin emulsion and modified iron mud and has excellent waterproof and anti-freezing properties.
The invention also aims to provide a preparation method of the green waterproof concrete.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the green waterproof concrete is composed of cement, sand, water, a water-based emulsion, a water-based epoxy resin emulsion and modified iron mud, wherein the mass ratio of the cement to the sand is 25: 35-55: 13-27: 1-12: 1-10: 13-25; the water-based emulsion is prepared by reacting acrylic acid, acrylamide, isooctyl acrylate, methyl methacrylate, water, 2-acrylamide-2-methylpropanesulfonic acid, an SE-10 emulsifier, methylene bisacrylamide, ammonium persulfate and hydroxyl-terminated polyether-modified polysiloxane, wherein the mass ratio of the acrylic acid to the water-based emulsion is 9: 6-14: 17-25: 1-3: 21-33: 5-12: 4-10: 0.01-0.1: 0.4-1: 13-29; the waterborne epoxy resin emulsion is prepared by reacting NPED-20 waterborne epoxy resin with the mass part ratio of 36: 12-20: 13-26: 5-17, NX-8101 waterborne phenol aldehyde amine, water and a waterborne elastomer; the water-based elastomer is prepared by reacting isooctyl acrylate, butyl acrylate, acrylic acid, low-viscosity aliphatic epoxy acrylate, 819 photoinitiator, polyethylene glycol (200) dimethacrylate and SE-10 emulsifier, wherein the mass ratio of isooctyl acrylate, butyl acrylate, acrylic acid, low-viscosity aliphatic epoxy acrylate, 819 photoinitiator, polyethylene glycol (200) dimethacrylate to SE-10 emulsifier is 23: 16-25: 6-14: 13-19: 0.3-1: 7-18: 3-7; the modified iron mud is prepared by reacting 25: 15-21: 12-19: 2-6 parts by weight of iron mud, a waste polyacrylamide flocculant, a waste polyaluminium chloride flocculant and carboxymethyl cellulose.
Preferably, the mass part ratio of the cement to the sand to the water to the aqueous emulsion to the aqueous epoxy resin emulsion to the modified iron mud is 25:43:17:6.8:7.9: 18.3.
The preparation method of the green waterproof concrete comprises the following steps:
(1) adding iron mud, a waste polyacrylamide flocculant, a waste polyaluminium chloride flocculant and carboxymethyl cellulose into a high-speed mixer, reacting for 30min under the condition of keeping the mixing temperature of the system at 80 ℃, carrying out heat treatment on the product at 100 ℃ for 1h, 200 ℃ for 1h, 300 ℃ for 1h, 500 ℃ for 2h, 700 ℃ for 2h, 900 ℃ for 2h and 1000 ℃ for 3h, and crushing to obtain modified iron mud; the waste polyacrylamide flocculant, the waste polyaluminium chloride flocculant and the carboxymethyl cellulose are used for improving the porosity of the iron mud;
(2) adding isooctyl acrylate, butyl acrylate, acrylic acid, low-viscosity aliphatic epoxy acrylate, 819 photoinitiator, polyethylene glycol (200) dimethacrylate and SE-10 emulsifier into a reaction kettle, reacting at the reaction temperature of 35 ℃ for 30min at the stirring speed of 100r/min, and irradiating the product for 8-36 s by a 400-1000W high-pressure mercury lamp to obtain the waterborne elastomer; the purpose of the low-viscosity aliphatic epoxy acrylate is to improve the frost resistance of the waterborne epoxy resin emulsion;
(3) adding NPED-20 aqueous epoxy resin, NX-8101 aqueous phenolic aldehyde amine, water and an aqueous elastomer into a reaction kettle, stirring at 120r/min and at 0-15 ℃ for reaction for 10-35 min to obtain an aqueous epoxy resin emulsion; the purpose of the aqueous elastomer is to improve the frost resistance of the aqueous epoxy resin emulsion;
(4) adding acrylic acid, 2-acrylamide-2-methylpropanesulfonic acid and hydroxyl-terminated polyether modified polysiloxane into a reaction kettle, stirring at 90r/min, maintaining the system temperature at 112-137 ℃ and 0.03-0.1 MPa for reaction for 1-5 hours, adding the product, acrylamide, isooctyl acrylate, methyl methacrylate, water, SE-10 emulsifier, methylene bisacrylamide and ammonium persulfate into the reaction kettle, stirring at 110r/min, and maintaining the system temperature at 70-92 ℃ for reaction for 1-4 hours to obtain an aqueous emulsion; the purpose of the hydroxyl-terminated polyether modified polysiloxane is to improve the water resistance of the aqueous emulsion;
(5) and adding the mixture of the water-based emulsion, the water-based epoxy resin emulsion and the modified iron mud, cement, sand and water into a stirrer at a stirring speed of 65r/min, and reacting for 1-10 min at a system temperature of 20 ℃ to obtain the green waterproof concrete.
The invention has the beneficial effects that:
1. the waste polyacrylamide flocculant, the waste polyaluminium chloride flocculant and the carboxymethyl cellulose have a thickening effect and can improve the dispersibility of the iron mud, and the waste polyacrylamide flocculant and the waste polyaluminium chloride flocculant only contain organic matters, the polyacrylamide flocculant and the polyaluminium chloride flocculant, so that after the iron mud is subjected to high-temperature heat treatment, the polyacrylamide flocculant, the polyaluminium chloride flocculant and the organic matters are used as pore-forming agents of the iron mud, and the porosity of the iron mud is improved; the prepared iron mud can improve the compatibility and the dispersibility between the water-based emulsion and the water-based epoxy resin emulsion as well as cement and sand due to the porosity, and improve the waterproof and anti-freezing performance of the green waterproof concrete;
2. The NPED-20 waterborne epoxy resin and the NX-8101 waterborne phenol formaldehyde amine can better disperse the waterborne elastomer, improve the bonding strength between the waterborne elastomer and cement and sand and improve the dispersion stability of the waterborne elastomer in materials; the prepared waterborne epoxy resin emulsion can obviously improve the frost resistance of the green waterproof concrete due to the capability of uniformly dispersing the waterborne elastomer;
3. the hydroxyl-terminated polyether modified polysiloxane is subjected to surface modification by acrylic acid and 2-acrylamide-2-methylpropanesulfonic acid, can improve the chemical activity of the hydroxyl-terminated polyether modified polysiloxane and participate in microemulsion polymerization reaction of other materials, can be grafted to an aqueous emulsion structure, and can obviously improve the waterproof performance of the aqueous emulsion; the prepared water-based emulsion improves the waterproof performance of the green waterproof concrete due to the excellent waterproof performance.
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 green waterproof concrete comprises the following steps:
(1) adding 25 parts of iron mud, 18.2 parts of waste polyacrylamide flocculant, 15.1 parts of waste polyaluminium chloride flocculant and 3.7 parts of carboxymethyl cellulose into a high-speed mixer, reacting for 30min under the condition of maintaining the mixing temperature of the system at 80 ℃, performing 100 ℃ heat treatment on the product for 1h, 200 ℃ heat treatment for 1h, 300 ℃ heat treatment for 1h, 500 ℃ heat treatment for 2h, 700 ℃ heat treatment for 2h, 900 ℃ heat treatment for 2h and 1000 ℃ heat treatment for 3h, and crushing to obtain modified iron mud;
(2) adding 23 parts of isooctyl acrylate, 19 parts of butyl acrylate, 10.1 parts of acrylic acid, 16.5 parts of low-viscosity aliphatic epoxy acrylate, 0.4 part of 819 photoinitiator, 13.7 parts of polyethylene glycol (200) dimethacrylate and 5.2 parts of SE-10 emulsifier into a reaction kettle, reacting at the reaction temperature of 35 ℃ for 30min at the stirring speed of 100r/min, and irradiating the product for 18s by a 500W high-pressure mercury lamp to obtain the water-based elastomer;
(3) adding 36 parts of NPED-20 aqueous epoxy resin, 14.5 parts of NX-8101 aqueous phenolic aldehyde amine, 17.6 parts of water and 11.6 parts of aqueous elastomer into a reaction kettle, and reacting at the reaction temperature of 5 ℃ for 19min at the stirring speed of 120r/min to obtain an aqueous epoxy resin emulsion;
(4) adding 9 parts of acrylic acid, 23 parts of 2-acrylamide-2-methylpropanesulfonic acid and 26.3 parts of hydroxyl-terminated polyether modified polysiloxane into a reaction kettle, stirring at 90r/min, reacting for 3 hours under the condition of maintaining the system temperature at 126 ℃ and 0.06MPa, adding the product, 8.2 parts of acrylamide, 22 parts of isooctyl acrylate, 1.6 parts of methyl methacrylate, 8.9 parts of water, 5.7 parts of SE-10 emulsifier, 0.03 part of methylene bisacrylamide and 0.5 part of ammonium persulfate into the reaction kettle, stirring at 110r/min, and reacting for 3 hours under the condition of maintaining the system temperature at 80 ℃ to obtain an aqueous emulsion;
(5) and adding the mixture of 6.8 parts of aqueous emulsion, 7.9 parts of aqueous epoxy resin emulsion and 18.3 parts of modified iron mud, 25 parts of cement, 43 parts of sand and 17 parts of water into a stirrer, stirring at the speed of 65r/min, and reacting for 3min at the temperature of 20 ℃ of the system to obtain the green waterproof concrete.
Example 2
The preparation method of the green waterproof concrete comprises the following steps:
(1) adding 25 parts of iron mud, 15 parts of waste polyacrylamide flocculant, 12 parts of waste polyaluminium chloride flocculant and 2 parts of carboxymethyl cellulose into a high-speed mixer, reacting for 30min under the condition of keeping the mixing temperature of the system at 80 ℃, carrying out heat treatment on the product at 100 ℃ for 1h, at 200 ℃ for 1h, at 300 ℃ for 1h, at 500 ℃ for 2h, at 700 ℃ for 2h, at 900 ℃ for 2h and at 1000 ℃ for 3h, and crushing to obtain modified iron mud;
(2) adding 23 parts of isooctyl acrylate, 16 parts of butyl acrylate, 6 parts of acrylic acid, 13 parts of low-viscosity aliphatic epoxy acrylate, 0.3 part of 819 photoinitiator, 7 parts of polyethylene glycol (200) dimethacrylate and 3 parts of SE-10 emulsifier into a reaction kettle, reacting for 30min at the reaction temperature of 35 ℃ at the stirring speed of 100r/min, and irradiating the product for 36s by a 400W high-pressure mercury lamp to obtain the water-based elastomer;
(3) adding 36 parts of NPED-20 aqueous epoxy resin, 12 parts of NX-8101 aqueous phenolic aldehyde amine, 13 parts of water and 5 parts of aqueous elastomer into a reaction kettle, and reacting at the stirring speed of 120r/min and the reaction temperature of 0 ℃ for 35min to obtain an aqueous epoxy resin emulsion;
(4) adding 9 parts of acrylic acid, 21 parts of 2-acrylamide-2-methylpropanesulfonic acid and 13 parts of polyether modified polysiloxane containing terminal hydroxyl into a reaction kettle, stirring at 90r/min, maintaining the system temperature at 112 ℃ and reacting at 0.1MPa for 1 hour, adding the product, 6 parts of acrylamide, 17 parts of isooctyl acrylate, 1 part of methyl methacrylate, 5 parts of water, 4 parts of SE-10 emulsifier, 0.01 part of methylene bisacrylamide and 0.4 part of ammonium persulfate into the reaction kettle, stirring at 110r/min, and reacting at 70 ℃ for 4 hours to obtain an aqueous emulsion;
(5) and adding the mixture of 1 part of aqueous epoxy resin emulsion and 13 parts of modified iron mud, 25 parts of cement, 35 parts of sand, 13 parts of water and 1 part of aqueous emulsion into a stirrer, stirring at 65r/min, and reacting for 1min at the temperature of 20 ℃ of the system to obtain the green waterproof concrete.
Example 3
The preparation method of the green waterproof concrete comprises the following steps:
(1) adding 25 parts of iron mud, 21 parts of waste polyacrylamide flocculant, 19 parts of waste polyaluminium chloride flocculant and 6 parts of carboxymethyl cellulose into a high-speed mixer, reacting for 30min under the condition of keeping the mixing temperature of the system at 80 ℃, carrying out heat treatment on the product at 100 ℃ for 1h, at 200 ℃ for 1h, at 300 ℃ for 1h, at 500 ℃ for 2h, at 700 ℃ for 2h, at 900 ℃ for 2h and at 1000 ℃ for 3h, and crushing to obtain modified iron mud;
(2) adding 23 parts of isooctyl acrylate, 25 parts of butyl acrylate, 14 parts of acrylic acid, 19 parts of low-viscosity aliphatic epoxy acrylate, 1 part of 819 photoinitiator, 18 parts of polyethylene glycol (200) dimethacrylate and 7 parts of SE-10 emulsifier into a reaction kettle, stirring at the speed of 100r/min, reacting at the temperature of 35 ℃ for 30min, and irradiating the product for 8s by a 1000W high-pressure mercury lamp to obtain the water-based elastomer;
(3) adding 36 parts of NPED-20 aqueous epoxy resin, 20 parts of NX-8101 aqueous phenolic aldehyde amine, 26 parts of water and 17 parts of aqueous elastomer into a reaction kettle, and reacting at the stirring speed of 120r/min and the reaction temperature of 15 ℃ for 10min to obtain an aqueous epoxy resin emulsion;
(4) adding 9 parts of acrylic acid, 33 parts of 2-acrylamide-2-methylpropanesulfonic acid and 29 parts of polyether modified polysiloxane containing terminal hydroxyl into a reaction kettle, stirring at 90r/min, reacting for 5 hours under the condition of maintaining the system temperature at 137 ℃ and 0.03MPa, adding the product, 14 parts of acrylamide, 25 parts of isooctyl acrylate, 3 parts of methyl methacrylate, 12 parts of water, 10 parts of SE-10 emulsifier, 0.1 part of methylene bisacrylamide and 1 part of ammonium persulfate into the reaction kettle, stirring at 110r/min, and reacting for 1 hour under the condition of maintaining the system temperature at 92 ℃ to obtain an aqueous emulsion;
(5) and adding a mixture of 12 parts of aqueous emulsion, 10 parts of aqueous epoxy resin emulsion and 25 parts of modified iron mud, 25 parts of cement, 55 parts of sand and 27 parts of water into a stirrer, stirring at a speed of 65r/min, and reacting for 10min at a system temperature of 20 ℃ to obtain the green waterproof concrete.
Example 4
The preparation method of the green waterproof concrete comprises the following steps:
(1) adding 25 parts of iron mud, 15.6 parts of waste polyacrylamide flocculant, 12.7 parts of waste polyaluminium chloride flocculant and 2.3 parts of carboxymethyl cellulose into a high-speed mixer, reacting for 30min under the condition of maintaining the mixing temperature of the system at 80 ℃, performing heat treatment on the product at 100 ℃ for 1h, 200 ℃ for 1h, 300 ℃ for 1h, 500 ℃ for 2h, 700 ℃ for 2h, 900 ℃ for 2h and 1000 ℃ for 3h, and crushing to obtain modified iron mud;
(2) adding 23 parts of isooctyl acrylate, 16.5 parts of butyl acrylate, 6.7 parts of acrylic acid, 13.3 parts of low-viscosity aliphatic epoxy acrylate, 0.4 part of 819 photoinitiator, 7.2 parts of polyethylene glycol (200) dimethacrylate and 3.1 parts of SE-10 emulsifier into a reaction kettle, reacting at the reaction temperature of 35 ℃ for 30min at the stirring speed of 100r/min, and illuminating the product for 33s by a 500W high-pressure mercury lamp to obtain the water-based elastomer;
(3) adding 36 parts of NPED-20 aqueous epoxy resin, 12.9 parts of NX-8101 aqueous phenolic aldehyde amine, 13.9 parts of water and 5.7 parts of aqueous elastomer into a reaction kettle, and reacting at the reaction temperature of 2 ℃ for 12min at the stirring speed of 120r/min to obtain an aqueous epoxy resin emulsion;
(4) adding 9 parts of acrylic acid, 21.8 parts of 2-acrylamide-2-methylpropanesulfonic acid and 13.7 parts of polyether modified polysiloxane containing terminal hydroxyl into a reaction kettle, stirring at 90r/min, reacting at 113 ℃ and 0.04MPa for 1.5 hours, adding the product, 6.7 parts of acrylamide, 17.7 parts of isooctyl acrylate, 1.1 parts of methyl methacrylate, 5.8 parts of water, 4.6 parts of SE-10 emulsifier, 0.02 part of methylene bisacrylamide and 0.5 part of ammonium persulfate into the reaction kettle, stirring at 110r/min, and reacting at 72 ℃ for 1.3 hours to obtain an aqueous emulsion;
(5) and adding the mixture of 1.3 parts of aqueous emulsion, 1.9 parts of aqueous epoxy resin emulsion and 13.5 parts of modified iron mud, 25 parts of cement, 37 parts of sand and 13.9 parts of water into a stirrer, stirring at the speed of 65r/min, and reacting for 3min at the temperature of 20 ℃ of the system to obtain the green waterproof concrete.
Example 5
The preparation method of the green waterproof concrete comprises the following steps:
(1) adding 25 parts of iron mud, 16.9 parts of waste polyacrylamide flocculant, 14.3 parts of waste polyaluminium chloride flocculant and 3.1 parts of carboxymethyl cellulose into a high-speed mixer, reacting for 30min under the condition of maintaining the mixing temperature of the system at 80 ℃, performing 100 ℃ heat treatment on the product for 1h, 200 ℃ heat treatment for 1h, 300 ℃ heat treatment for 1h, 500 ℃ heat treatment for 2h, 700 ℃ heat treatment for 2h, 900 ℃ heat treatment for 2h and 1000 ℃ heat treatment for 3h, and crushing to obtain modified iron mud;
(2) adding 23 parts of isooctyl acrylate, 18.6 parts of butyl acrylate, 8.7 parts of acrylic acid, 15.2 parts of low-viscosity aliphatic epoxy acrylate, 0.5 part of 819 photoinitiator, 9.3 parts of polyethylene glycol (200) dimethacrylate and 4.7 parts of SE-10 emulsifier into a reaction kettle, reacting at the reaction temperature of 35 ℃ for 30min at the stirring speed of 100r/min, and irradiating the product for 11s by a 600W high-pressure mercury lamp to obtain the water-based elastomer;
(3) adding 36 parts of NPED-20 aqueous epoxy resin, 13.9 parts of NX-8101 aqueous phenolic aldehyde amine, 16.7 parts of water and 9.2 parts of aqueous elastomer into a reaction kettle, and reacting at the stirring speed of 120r/min and the reaction temperature of 6 ℃ for 16min to obtain an aqueous epoxy resin emulsion;
(4) adding 9 parts of acrylic acid, 26.5 parts of 2-acrylamide-2-methylpropanesulfonic acid and 19.7 parts of polyether modified polysiloxane containing terminal hydroxyl into a reaction kettle, stirring at 90r/min, reacting at the system temperature of 117 ℃ and under the pressure of 0.05MPa for 1.9h, adding the product, 8.8 parts of acrylamide, 20.7 parts of isooctyl acrylate, 1.5 parts of methyl methacrylate, 7.8 parts of water, 5.9 parts of SE-10 emulsifier, 0.04 part of methylene bisacrylamide and 0.6 part of ammonium persulfate into the reaction kettle, stirring at 110r/min, and reacting at the system temperature of 79 ℃ for 1.8h to obtain an aqueous emulsion;
(5) and adding the mixture of 4.6 parts of aqueous emulsion, 3.9 parts of aqueous epoxy resin emulsion and 17.6 parts of modified iron mud, 25 parts of cement, 39 parts of sand and 17 parts of water into a stirrer, stirring at the speed of 65r/min, and reacting for 4min at the temperature of 20 ℃ of the system to obtain the green waterproof concrete.
Example 6
The preparation method of the green waterproof concrete comprises the following steps:
(1) adding 25 parts of iron mud, 20.8 parts of waste polyacrylamide flocculant, 18.1 parts of waste polyaluminium chloride flocculant and 5.3 parts of carboxymethyl cellulose into a high-speed mixer, reacting for 30min under the condition of maintaining the mixing temperature of the system at 80 ℃, performing 100 ℃ heat treatment on the product for 1h, 200 ℃ heat treatment for 1h, 300 ℃ heat treatment for 1h, 500 ℃ heat treatment for 2h, 700 ℃ heat treatment for 2h, 900 ℃ heat treatment for 2h and 1000 ℃ heat treatment for 3h, and crushing to obtain modified iron mud;
(2) adding 23 parts of isooctyl acrylate, 23.8 parts of butyl acrylate, 13.7 parts of acrylic acid, 18.3 parts of low-viscosity aliphatic epoxy acrylate, 0.8 part of 819 photoinitiator, 16.8 parts of polyethylene glycol (200) dimethacrylate and 6.6 parts of SE-10 emulsifier into a reaction kettle, reacting at the reaction temperature of 35 ℃ for 30min at the stirring speed of 100r/min, and illuminating the product for 11s by a 900W high-pressure mercury lamp to obtain the water-based elastomer;
(3) adding 36 parts of NPED-20 aqueous epoxy resin, 18.9 parts of NX-8101 aqueous phenolic aldehyde amine, 25.5 parts of water and 16.7 parts of aqueous elastomer into a reaction kettle, and reacting at the reaction temperature of 13 ℃ for 33min at the stirring speed of 120r/min to obtain an aqueous epoxy resin emulsion;
(4) adding 9 parts of acrylic acid, 31 parts of 2-acrylamide-2-methylpropanesulfonic acid and 27.6 parts of polyether modified polysiloxane containing terminal hydroxyl into a reaction kettle, stirring at 90r/min, reacting at a system temperature of 134 ℃ and under 0.08MPa for 4.5 hours, adding a product, 13.3 parts of acrylamide, 22.7 parts of isooctyl acrylate, 2.6 parts of methyl methacrylate, 11.2 parts of water, 9.3 parts of SE-10 emulsifier, 0.07 part of methylene bisacrylamide and 0.7 part of ammonium persulfate into the reaction kettle, stirring at 110r/min, and reacting at a system temperature of 90 ℃ for 3.2 hours to obtain an aqueous emulsion;
(5) and adding the mixture of 10.9 parts of aqueous emulsion, 9.1 parts of aqueous epoxy resin emulsion and 23.6 parts of modified iron mud, 25 parts of cement, 52 parts of sand and 25.6 parts of water into a stirrer, stirring at the speed of 65r/min, and reacting for 9min at the temperature of 20 ℃ of the system to obtain the green waterproof concrete.
Example 7
The preparation method of the green waterproof concrete comprises the following steps:
(1) adding 25 parts of iron mud, 20 parts of waste polyacrylamide flocculant, 16 parts of waste polyaluminium chloride flocculant and 5 parts of carboxymethyl cellulose into a high-speed mixer, reacting for 30min under the condition of keeping the mixing temperature of the system at 80 ℃, carrying out heat treatment on the product at 100 ℃ for 1h, at 200 ℃ for 1h, at 300 ℃ for 1h, at 500 ℃ for 2h, at 700 ℃ for 2h, at 900 ℃ for 2h and at 1000 ℃ for 3h, and crushing to obtain modified iron mud;
(2) adding 23 parts of isooctyl acrylate, 19 parts of butyl acrylate, 11 parts of acrylic acid, 16 parts of low-viscosity aliphatic epoxy acrylate, 0.5 part of 819 photoinitiator, 11 parts of polyethylene glycol (200) dimethacrylate and 5 parts of SE-10 emulsifier into a reaction kettle, reacting for 30min at the reaction temperature of 35 ℃ at the stirring speed of 100r/min, and irradiating the product for 16s by a 700W high-pressure mercury lamp to obtain the water-based elastomer;
(3) adding 36 parts of NPED-20 aqueous epoxy resin, 16 parts of NX-8101 aqueous phenolic aldehyde amine, 19 parts of water and 12 parts of aqueous elastomer into a reaction kettle, and reacting at the stirring speed of 120r/min and the reaction temperature of 9 ℃ for 18min to obtain an aqueous epoxy resin emulsion;
(4) adding 9 parts of acrylic acid, 28 parts of 2-acrylamide-2-methylpropanesulfonic acid and 23 parts of hydroxyl-terminated polyether modified polysiloxane into a reaction kettle, stirring at 90r/min, maintaining the system temperature at 119 ℃ and reacting at 0.07MPa for 3 hours, adding the product, 11 parts of acrylamide, 20 parts of isooctyl acrylate, 2 parts of methyl methacrylate, 8 parts of water, 7 parts of SE-10 emulsifier, 0.05 part of methylene bisacrylamide and 0.7 part of ammonium persulfate into the reaction kettle, stirring at 110r/min, and reacting at 83 ℃ for 2.5 hours to obtain an aqueous emulsion;
(5) and adding a mixture of 10 parts of aqueous emulsion, 8 parts of aqueous epoxy resin emulsion and 18 parts of modified iron mud, 25 parts of cement, 41 parts of sand and 19 parts of water into a stirrer, stirring at 65r/min, and reacting for 7min at the temperature of 20 ℃ of the system to obtain the green waterproof concrete.
Example 8
The preparation method of the green waterproof concrete comprises the following steps:
(1) adding 25 parts of iron mud, 19.6 parts of waste polyacrylamide flocculant, 15.7 parts of waste polyaluminium chloride flocculant and 4.6 parts of carboxymethyl cellulose into a high-speed mixer, reacting for 30min under the condition of maintaining the mixing temperature of the system at 80 ℃, performing heat treatment on the product at 100 ℃ for 1h, 200 ℃ for 1h, 300 ℃ for 1h, 500 ℃ for 2h, 700 ℃ for 2h, 900 ℃ for 2h and 1000 ℃ for 3h, and crushing to obtain modified iron mud;
(2) adding 23 parts of isooctyl acrylate, 21.2 parts of butyl acrylate, 12.3 parts of acrylic acid, 16.5 parts of low-viscosity aliphatic epoxy acrylate, 0.6 part of 819 photoinitiator, 14.3 parts of polyethylene glycol (200) dimethacrylate and 5.6 parts of SE-10 emulsifier into a reaction kettle, reacting at the reaction temperature of 35 ℃ for 30min at the stirring speed of 100r/min, and illuminating the product for 27s by using an 800W high-pressure mercury lamp to obtain the water-based elastomer;
(3) adding 36 parts of NPED-20 aqueous epoxy resin, 17.7 parts of NX-8101 aqueous phenolic aldehyde amine, 21.2 parts of water and 13.9 parts of aqueous elastomer into a reaction kettle, and reacting at the stirring speed of 120r/min and the reaction temperature of 13 ℃ for 26min to obtain an aqueous epoxy resin emulsion;
(4) adding 9 parts of acrylic acid, 26.6 parts of 2-acrylamide-2-methylpropanesulfonic acid and 25.6 parts of polyether modified polysiloxane containing terminal hydroxyl into a reaction kettle, stirring at 90r/min, reacting at the system temperature of 131 ℃ and under the pressure of 0.06MPa for 4.5 hours, adding the product, 1.9 parts of acrylamide, 23.7 parts of isooctyl acrylate, 2.1 parts of methyl methacrylate, 9.6 parts of water, 8.3 parts of SE-10 emulsifier, 0.07 part of methylene bisacrylamide and 0.8 part of ammonium persulfate into the reaction kettle, stirring at 110r/min, and reacting at the system temperature of 87 ℃ for 3.3 hours to obtain an aqueous emulsion;
(5) and adding a mixture of 9 parts of aqueous emulsion, 6 parts of aqueous epoxy resin emulsion and 21 parts of modified iron mud, 25 parts of cement, 43 parts of sand and 22 parts of water into a stirrer, stirring at a speed of 65r/min, and reacting for 7min at a system temperature of 20 ℃ to obtain the green waterproof concrete.
Comparative example 1
In this comparative example, the modified iron mud was not added, and the other components and preparation method were the same as in example 1.
Comparative example 2
In this comparative example, the other components and preparation method were the same as in example 1, except that the aqueous elastomer was not added.
Comparative example 3
In this comparative example, the other components and preparation method were the same as in example 1, except that the aqueous epoxy resin emulsion was not added.
Comparative example 4
In this comparative example, the aqueous emulsion was not added, and the other components and preparation method were the same as in example 1.
Comparative example 5
In the comparison example, the common iron mud is selected in the formula to replace the modified iron mud 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 comparison example, the common poly (isooctyl acrylate) elastomer is selected in the formula to replace the water-based elastomer in the example 1, and other components and the preparation method are the same as the example 1.
Comparative example 7
In the comparison example, the common water-based epoxy resin is selected in the formula to replace the water-based epoxy resin emulsion in the example 1, and other components and the preparation method are the same as those in the example 1.
Comparative example 8
In the comparison example, the common water-based acrylate emulsion is selected in the formula to replace the water-based emulsion in the example 1, and other components and the preparation method are the same as those in the example 1.
The waterproof and antifreezing performances of the green waterproof concrete prepared in the embodiments 1-8 and the comparative examples 1-8 are tested according to JC/T2090-2011, and the test results are shown in the following tables 1 and 2.
TABLE 1 Performance parameters of Green waterproof concrete prepared in examples 1 to 8
TABLE 2 Performance parameters of the green waterproof concrete prepared in example 1 and comparative examples 1 to 8
As can be seen from the above tables 1 and 2, the waterproof and antifreezing performances of the green waterproof concrete prepared in the embodiments of the present invention are excellent, which indicates that the green waterproof concrete prepared from the raw materials provided by the present invention has good waterproof and antifreezing performances; in contrast, the green waterproof concrete prepared from the raw materials of each comparative example has poor waterproof and anti-freezing properties. In addition, the green waterproof concrete prepared by the embodiments of the invention has better waterproof and antifreezing performances.
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 (4)
1. The green waterproof concrete is characterized by comprising cement, sand, water, a water-based emulsion, a water-based epoxy resin emulsion and modified iron mud, wherein the mass ratio of the cement to the water is 25: 35-55: 13-27: 1-12: 1-10: 13-25; the water-based emulsion is prepared by reacting acrylic acid, acrylamide, isooctyl acrylate, methyl methacrylate, water, 2-acrylamide-2-methylpropanesulfonic acid, an SE-10 emulsifier, methylene bisacrylamide, ammonium persulfate and hydroxyl-terminated polyether-modified polysiloxane, wherein the mass ratio of the acrylic acid to the water-based emulsion is 9: 6-14: 17-25: 1-3: 21-33: 5-12: 4-10: 0.01-0.1: 0.4-1: 13-29; the waterborne epoxy resin emulsion is prepared by reacting NPED-20 waterborne epoxy resin with the mass part ratio of 36: 12-20: 13-26: 5-17, NX-8101 waterborne phenol aldehyde amine, water and a waterborne elastomer; the water-based elastomer is prepared by reacting 23: 16-25: 6-14: 13-19: 0.3-1: 7-18: 3-7 parts by mass of isooctyl acrylate, butyl acrylate, acrylic acid, low-viscosity aliphatic epoxy acrylate, 819 photoinitiator, polyethylene glycol 200 dimethacrylate and SE-10 emulsifier; the modified iron mud is prepared by reacting 25: 15-21: 12-19: 2-6 parts by weight of iron mud, a waste polyacrylamide flocculant, a waste polyaluminium chloride flocculant and carboxymethyl cellulose;
the preparation method of the green waterproof concrete comprises the following steps:
(1) adding iron mud, a waste polyacrylamide flocculant, a waste polyaluminium chloride flocculant and carboxymethyl cellulose into a high-speed mixer, reacting for 30min under the condition of keeping the mixing temperature of the system at 80 ℃, carrying out heat treatment on the product at 100 ℃ for 1h, 200 ℃ for 1h, 300 ℃ for 1h, 500 ℃ for 2h, 700 ℃ for 2h, 900 ℃ for 2h and 1000 ℃ for 3h, and crushing to obtain modified iron mud;
(2) adding isooctyl acrylate, butyl acrylate, acrylic acid, low-viscosity aliphatic epoxy acrylate, 819 photoinitiator, polyethylene glycol 200 dimethacrylate and SE-10 emulsifier into a reaction kettle, reacting for 30min at the reaction temperature of 35 ℃ at the stirring speed of 100r/min, and irradiating the product for 8-36 s by a 400-1000W high-pressure mercury lamp to obtain the water-based elastomer;
(3) adding NPED-20 aqueous epoxy resin, NX-8101 aqueous phenolic aldehyde amine, water and an aqueous elastomer into a reaction kettle, stirring at 120r/min and at 0-15 ℃ for reaction for 10-35 min to obtain an aqueous epoxy resin emulsion;
(4) adding acrylic acid, 2-acrylamide-2-methylpropanesulfonic acid and hydroxyl-terminated polyether modified polysiloxane into a reaction kettle, stirring at 90r/min, maintaining the system temperature at 112-137 ℃ and 0.03-0.1 MPa for reaction for 1-5 hours, adding the product, acrylamide, isooctyl acrylate, methyl methacrylate, water, SE-10 emulsifier, methylene bisacrylamide and ammonium persulfate into the reaction kettle, stirring at 110r/min, and maintaining the system temperature at 70-92 ℃ for reaction for 1-4 hours to obtain an aqueous emulsion;
(5) and adding the mixture of the water-based emulsion, the water-based epoxy resin emulsion and the modified iron mud, cement, sand and water into a stirrer at a stirring speed of 65r/min, and reacting for 1-10 min at a system temperature of 20 ℃ to obtain the green waterproof concrete.
2. The green waterproof concrete as claimed in claim 1, wherein the mass part ratio of the cement to the sand to the water to the aqueous emulsion to the aqueous epoxy resin emulsion to the modified iron mud is 25:43:17:6.8:7.9: 18.3.
3. The green waterproof concrete according to claim 1, wherein the waste polyacrylamide flocculant only contains organic substances and polyacrylamide.
4. The green waterproof concrete according to claim 1, wherein the waste polyaluminium chloride flocculant only contains organic matters and polyaluminium chloride.
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