CN115180973A - Gel type concrete curing agent - Google Patents
Gel type concrete curing agent Download PDFInfo
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- CN115180973A CN115180973A CN202210743627.0A CN202210743627A CN115180973A CN 115180973 A CN115180973 A CN 115180973A CN 202210743627 A CN202210743627 A CN 202210743627A CN 115180973 A CN115180973 A CN 115180973A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/04—Preventing evaporation of the mixing water
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
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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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5076—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with masses bonded by inorganic cements
- C04B41/5085—Calcium sulfate 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5076—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with masses bonded by inorganic cements
- C04B41/509—Magnesium cements, e.g. Sorel cement
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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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5076—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with masses bonded by inorganic cements
- C04B41/5092—Phosphate 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
- C04B41/65—Coating or impregnation with inorganic materials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a gel type concrete curing agent, which comprises the following raw materials in parts by weight: the water-soluble polymer is a mixture of polyacrylamide, sodium alginate, polyvinyl alcohol and water-soluble cellulose; the water-soluble polymer solution, the cross-linking agent and other raw material components are utilized to jointly act to form the hydrogel with the three-dimensional network structure, the curing agent (external curing agent) for the concrete is formed, a gel water-retaining layer is formed on the surface of the concrete, and the hydrogel three-dimensional network can lock water so that the hydrogel has good water-retaining property, can effectively reduce water evaporation in the concrete, and reduces concrete shrinkage and cracking.
Description
Technical Field
The invention relates to a concrete curing agent, in particular to a gel type concrete curing agent.
Background
The concrete curing agent is usually a film-forming additive, and a curing film can be formed on the surface of concrete through spraying construction, so that the surface of the concrete is isolated from air, and the moisture is reduced or even prevented from evaporating any more, thereby utilizing the moisture contained in the concrete to maximally complete hydration and achieving the purpose of curing. At present, the commonly used concrete curing agents are classified into three types, i.e., inorganic, organic, and organic-inorganic composite. The inorganic curing agent is generally silicate curing agent, and after spraying, a layer of hydrated calcium silicate colloid film can be formed on the surface of concrete, so that the effect of isolating air and reducing water vapor evaporation can be achieved, but the inorganic curing agent has the defects of poor film forming effect and low water retention rate; and alkali metal ions are contained in the concrete, so that the efflorescence phenomenon of concrete pores is difficult to effectively prevent, the appearance quality of the concrete is influenced after spraying and curing, and the popularization and application are limited. The organic curing agent comprises a solvent type curing agent and an emulsion type curing agent, wherein the solvent type curing agent has a good water retention effect, but an organic solvent is selected as a dispersion phase, the volatilization of the organic solvent can cause certain environmental pollution, and the cost is obviously higher. The emulsion type curing agent is a curing agent which is developed and applied more in recent years, and the used high polymer emulsion mainly comprises paraffin emulsion and styrene-acrylic emulsion. The paraffin emulsion has relatively low cost, but has poor film-forming performance, and a paraffin film layer formed on the surface of the formed paraffin emulsion has poor adhesion with the surface of concrete, and further has poor adhesion between the plastering or organic coating and the paraffin film layer when the surface of the concrete is plastered or subjected to organic coating protection treatment.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a gel-type concrete curing agent that forms a gel water-retaining layer on the surface of concrete, reduces water evaporation in the concrete, and reduces shrinkage and cracking of the concrete.
The gel type concrete curing agent comprises the following raw materials in parts by weight: 50-80 parts of water-soluble polymer, 10-20 parts of lamellar nano-intercalation modified clay, 5-10 parts of concrete whisker, 1-5 parts of reinforcing agent, 3-7 parts of polyaspartic acid, 1-5 parts of four-arm polyethylene glycol, 4-8 parts of potassium humate, 5-15 parts of nano-attapulgite, 1-5 parts of styrylpyridine, 1-5 parts of quinoline carboxylate, 1-3 parts of xanthan gum, 5-12 parts of polyoxyethylene-polystyrene-polyoxyethylene block copolymer, 10-20 parts of cross-linking agent, 5-10 parts of hydrolysable silane compound and 5-10 parts of inorganic gelling material, wherein the water-soluble polymer is a mixture of polyacrylamide, sodium alginate, polyvinyl alcohol and water-soluble cellulose;
further, the weight ratio of polyacrylamide: sodium alginate: polyvinyl alcohol: water-soluble cellulose =3:2:1:1.
further, the mortar also comprises 100-200 parts of mud;
further, the concrete whisker is at least one of calcium sulfate whisker and calcium silicate whisker;
further, the reinforcing agent is at least one of sodium silicate, calcium silicate and triethanolamine;
further, the cross-linking agent is at least one of methylene bisacrylamide, borax, glycerol triglycidyl ether and calcium chloride;
further, the hydrolysable silane compound is at least one of KH550, KH560 and tetraethyl silicate;
further, the inorganic cementing material is at least one of gypsum, phosphorus-magnesium cement and magnesium oxychloride cement;
further, the nano attapulgite is modified by p-phenylenediamine;
further, the curing agent comprises the following raw materials in parts by weight: 65 parts of water-soluble polymer, 15 parts of lamellar nano-intercalation modified clay, 7 parts of concrete whisker, 3 parts of reinforcing agent, 5 parts of polyaspartic acid, 3 parts of four-arm polyethylene glycol, 5 parts of potassium humate, 10 parts of nano-attapulgite, 3 parts of styrylpyridine, 3 parts of quinoline carboxylate, 2 parts of xanthan gum, 8 parts of polyoxyethylene-polystyrene-polyoxyethylene block copolymer, 15 parts of cross-linking agent, 7 parts of hydrolyzable silane compound and 7 parts of inorganic cementing material. The invention has the beneficial effects that: the gel type concrete curing agent disclosed by the invention utilizes the combined action of the water-soluble polymer solution, the cross-linking agent and other raw material components to form the curing agent (external curing agent) with the hydrogel having a three-dimensional network structure for concrete, a gel water-retaining layer is formed on the surface of the concrete, and the hydrogel three-dimensional network can lock water so that the curing agent has good water-retaining property, the water evaporation in the concrete can be effectively reduced, and the shrinkage and cracking of the concrete are reduced. The concrete curing agent can be sprayed externally or directly covered on the surface of concrete. The gel-type concrete curing agent of the present invention may be incorporated as well, but the strength may be affected by the addition of fine powder of the gel product.
Detailed Description
The following examples are provided to further illustrate the present invention for better understanding, but the present invention is not limited to the following examples.
In the examples, the experimental methods used were all conventional methods unless otherwise specified, and the materials, reagents and the like used were commercially available without otherwise specified.
The gel-type concrete curing agent of the embodiment comprises the following raw materials in parts by weight: 50-80 parts of water-soluble polymer, 10-20 parts of lamellar nano-intercalation modified clay, 5-10 parts of concrete whisker, 1-5 parts of reinforcing agent, 3-7 parts of polyaspartic acid, 1-5 parts of four-arm polyethylene glycol, 4-8 parts of potassium humate, 5-15 parts of nano attapulgite, 1-5 parts of styrylpyridine, 1-5 parts of quinoline carboxylate, 1-3 parts of xanthan gum, 5-12 parts of polyoxyethylene-polystyrene-polyoxyethylene block copolymer, 10-20 parts of cross-linking agent, 5-10 parts of hydrolyzable silane compound and 5-10 parts of inorganic gelling material, wherein the water-soluble polymer is a mixture of polyacrylamide, sodium alginate, polyvinyl alcohol and water-soluble cellulose, and the weight parts of the mixture are as follows: sodium alginate: polyvinyl alcohol: water-soluble cellulose =3:2:1:1; the molecular bridging effect of the adopted macromolecular additive can improve the stability of colloid and improve the water saturation of gel. The strength of the hydrogel can be improved by adopting the combined action of small molecular materials of quinoline carboxylate, styrylpyridine and a polymer, the biocompatibility inside and outside the gel body can be improved by the four-arm polyethylene glycol, the stability of a cross-linked network is improved, the structure and the performance of the hydrogel can be enhanced and improved by a large amount of hydroxyl groups covered on the surface of the nano attapulgite, the viscosity of the gel can be increased, the continuity of the sponge structure of the hydrogel can be improved, and the wall thickness and the porosity of the sponge structure can be enhanced. And the combination effect of the nano attapulgite and the polyoxyethylene-polystyrene-polyoxyethylene block copolymer can improve the particle dispersibility in the slurry hydrogel. The polyaspartic acid and sodium alginate can form a complex network structure combining semi-interpenetrating and interpenetrating, and the sodium alginate can improve the aperture size and the number of pores of the formed hydrogel, thereby further improving the adsorption and swelling capacity of the hydrogel. Meanwhile, sodium alginate can also form ion coordination crosslinking with metal ions (such as calcium ions and potassium ions) to form an ion crosslinking network, so that the tensile strength and the elongation at break of the hydrogel can be well improved. The polyacrylamide chains form a covalent bond crosslinking network, the sodium alginate and the ions form another crosslinking network, and the sodium alginate and the ions are combined with the polyvinyl alcohol to form a physical crosslinking network, so that the molecular chains are entangled under the combination action of the polyacrylamide, the sodium alginate and the polyvinyl alcohol, the network structure of the gel can be improved, the action of the potassium humate is combined, the water loss of the hydrogel is reduced, the wrapping property of the gel on water and mud is improved, the environmental tolerance of the hydrogel is improved, and the self insolubility and dispersion capability of the hydrogel can be ensured under the rainy weather. Xanthan gum can improve the viscosity of the hydrogel. The inorganic gel material and the silane of the water dispenser can connect particles in the slurry into a non-hydrolyzable network structure through physical and chemical actions, and form a common consolidation action with an organic polymer network adsorbing a large amount of water, so that the hydrolysis tendency of the organic network is reduced. A compact protective layer can be formed through the concrete reinforced whiskers, concrete mixing water is left in the protective layer to play a self-maintenance role, capillary channels caused by water volatilization are effectively prevented, the strength and the wear resistance of concrete are improved, concrete cracks are reduced, and lamellar nano intercalation modified clay is introduced into high polymer emulsion to further improve the film forming property of a curing agent and the water retention rate of a film layer.
In this embodiment, 100-200 parts of slurry may also be added; a slurry hydrogel may be formed.
In this embodiment, the concrete whisker is at least one of a calcium sulfate whisker and a calcium silicate whisker; the calcium sulfate whisker and the calcium silicate whisker have good compatibility and dispersibility with other components, play a role in enhancing, do not influence the molding of gel, can enhance the strength of a three-dimensional network of the gel, and further improve the toughness of the protective film.
In this embodiment, the enhancer is at least one of sodium silicate, calcium silicate, and triethanolamine; the formed protective film is enhanced.
Preferably, the cross-linking agent is at least one of methylene bisacrylamide, borax, glycerol triglycidyl ether and calcium chloride; the hydrolysable silane compound is at least one of KH550, KH560 and tetraethyl silicate; the inorganic cementing material is at least one of gypsum, phosphorus-magnesium cement and magnesium oxychloride cement.
In this embodiment, the nano-attapulgite is modified with p-phenylenediamine; the modification treatment of the nanometer attapulgite is carried out by adopting a p-phenylenediamine modification method in the prior art.
The preferred embodiment is that the curing agent comprises the following raw materials in parts by weight: 65 parts of water-soluble polymer, 15 parts of lamellar nano-intercalation modified clay, 7 parts of concrete whisker, 3 parts of reinforcing agent, 5 parts of polyaspartic acid, 3 parts of four-arm polyethylene glycol, 5 parts of potassium humate, 10 parts of nano-attapulgite, 3 parts of styrylpyridine, 3 parts of quinoline carboxylate, 2 parts of xanthan gum, 8 parts of polyoxyethylene-polystyrene-polyoxyethylene block copolymer, 15 parts of cross-linking agent, 7 parts of hydrolyzable silane compound and 7 parts of inorganic cementing material.
Example one
The gel-type concrete curing agent of the embodiment comprises the following raw materials in parts by weight: 50 parts of water-soluble polymer, 10 parts of lamellar nano-intercalation modified clay, 5 parts of concrete whisker, 1 part of reinforcing agent, 3 parts of polyaspartic acid, 1 part of four-arm polyethylene glycol, 4 parts of potassium humate, 5 parts of nano-attapulgite, 1 part of styrylpyridine, 1 part of quinoline carboxylate, 1 part of xanthan gum, 5 parts of polyoxyethylene-polystyrene-polyoxyethylene block copolymer, 10 parts of cross-linking agent, 5 parts of hydrolyzable silane compound and 5 parts of inorganic gelling material, wherein the water-soluble polymer is a mixture of polyacrylamide, sodium alginate, polyvinyl alcohol and water-soluble cellulose, and the weight parts of the mixture are as follows: sodium alginate: polyvinyl alcohol: water-soluble cellulose =3:2:1:1.
in this embodiment, the concrete whiskers are calcium sulfate whiskers; the reinforcing agent is sodium silicate; the cross-linking agent is methylene bisacrylamide; the hydrolysable silane compound is KH550; the inorganic cementing material is gypsum; the nanometer attapulgite is modified by p-phenylenediamine.
Example two
The gel-type concrete curing agent of the embodiment comprises the following raw materials in parts by weight: 80 parts of water-soluble polymer, 20 parts of lamellar nano intercalation modified clay, 10 parts of concrete whisker, 5 parts of reinforcing agent, 7 parts of polyaspartic acid, 5 parts of four-arm polyethylene glycol, 8 parts of potassium humate, 15 parts of nano attapulgite, 5 parts of styrylpyridine, 5 parts of quinoline carboxylate, 3 parts of xanthan gum, 12 parts of polyoxyethylene-polystyrene-polyoxyethylene block copolymer, 20 parts of cross-linking agent, 10 parts of hydrolyzable silane compound and 10 parts of inorganic gelling material, wherein the water-soluble polymer is a mixture of polyacrylamide, sodium alginate, polyvinyl alcohol and water-soluble cellulose, and the weight parts of the mixture are as follows: sodium alginate: polyvinyl alcohol: water-soluble cellulose =3:2:1:1.
in this embodiment, the concrete whisker is a calcium silicate whisker; the reinforcing agent is calcium silicate; the cross-linking agent is calcium chloride; the hydrolysable silane compound is KH560; the inorganic cementing material is phosphorus-magnesium cement; the nanometer attapulgite is modified by p-phenylenediamine.
EXAMPLE III
The gel-type concrete curing agent of the embodiment comprises the following raw materials in parts by weight: the slurry is 100 parts, the water-soluble macromolecule is 50 parts, the nano intercalation modified clay with lamellar shape is 20 parts, the concrete whisker is 5 parts, the reinforcing agent is 5 parts, the polyaspartic acid is 3 parts, the four-arm polyethylene glycol is 5 parts, the potassium humate is 4 parts, the nano attapulgite is 15 parts, the styrylpyridine is 1 part, the quinoline carboxylic acid salt is 5 parts, the xanthan gum is 1 part, the polyoxyethylene-polystyrene-polyoxyethylene block copolymer is 12 parts, the cross-linking agent is 10 parts, the hydrolysable silane compound is 10 parts, and the inorganic gel material is 5 parts, wherein the water-soluble macromolecule is a mixture of polyacrylamide, sodium alginate, polyvinyl alcohol and water-soluble cellulose, and the weight parts are as follows: sodium alginate: polyvinyl alcohol: water-soluble cellulose =3:2:1:1.
in this embodiment, the concrete whiskers are calcium sulfate whiskers and calcium silicate whiskers; the reinforcing agent is triethanolamine; the cross-linking agent is borax; the hydrolysable silane compound is tetraethyl silicate; the inorganic cementing material is magnesium oxychloride cement; the nanometer attapulgite is modified by p-phenylenediamine.
Example four
The gel-type concrete curing agent of the embodiment comprises the following raw materials in parts by weight: 80 parts of water-soluble polymer, 10 parts of lamellar nano-intercalation modified clay, 10 parts of concrete whisker, 1 part of reinforcing agent, 7 parts of polyaspartic acid, 1 part of four-arm polyethylene glycol, 8 parts of potassium humate, 5 parts of nano-attapulgite, 5 parts of styrylpyridine, 1 part of quinoline carboxylate, 3 parts of xanthan gum, 5 parts of polyoxyethylene-polystyrene-polyoxyethylene block copolymer, 20 parts of cross-linking agent, 5 parts of hydrolyzable silane compound and 10 parts of inorganic gelling material, wherein the water-soluble polymer is a mixture of polyacrylamide, sodium alginate, polyvinyl alcohol and water-soluble cellulose, and the weight parts of the mixture are as follows: sodium alginate: polyvinyl alcohol: water-soluble cellulose =3:2:1:1.
in this embodiment, the concrete whiskers are calcium sulfate whiskers and calcium silicate whiskers; the reinforcing agent is sodium silicate and triethanolamine; the cross-linking agent is methylene bisacrylamide and borax; the hydrolysable silane compound is KH550; the inorganic cementing material is phosphorus-magnesium cement; the nanometer attapulgite is modified by p-phenylenediamine.
EXAMPLE five
The gel-type concrete curing agent of the embodiment comprises the following raw materials in parts by weight: the slurry is 200 parts, 55 parts of water-soluble polymer, 18 parts of lamellar nano-intercalation modified clay, 7 parts of concrete whisker, 2 parts of reinforcing agent, 6 parts of polyaspartic acid, 3 parts of four-arm polyethylene glycol, 5 parts of potassium humate, 12 parts of nano-attapulgite, 3 parts of styrylpyridine, 1 part of quinoline carboxylate, 3 parts of xanthan gum, 8 parts of polyoxyethylene-polystyrene-polyoxyethylene block copolymer, 12 parts of cross-linking agent, 7 parts of hydrolysable silane compound and 9 parts of inorganic gelling material, wherein the water-soluble polymer is a mixture of polyacrylamide, sodium alginate, polyvinyl alcohol and water-soluble cellulose, and the weight parts of the mixture are as follows: sodium alginate: polyvinyl alcohol: water-soluble cellulose =3:2:1:1.
in this embodiment, the concrete whisker is a calcium silicate whisker; the reinforcing agent is calcium silicate; the cross-linking agent is glycerol triglycidyl ether; the hydrolysable silane compound is KH550; the inorganic cementing material is gypsum and phosphorus-magnesium cement; the nanometer attapulgite is modified by p-phenylenediamine.
Example six
The gel-type concrete curing agent of the embodiment comprises the following raw materials in parts by weight: 65 parts of water-soluble polymer, 15 parts of lamellar nano intercalation modified clay, 7 parts of concrete whisker, 3 parts of reinforcing agent, 5 parts of polyaspartic acid, 3 parts of four-arm polyethylene glycol, 5 parts of potassium humate, 10 parts of nano attapulgite, 3 parts of styrylpyridine, 3 parts of quinoline carboxylate, 2 parts of xanthan gum, 8 parts of polyoxyethylene-polystyrene-polyoxyethylene block copolymer, 15 parts of cross-linking agent, 7 parts of hydrolyzable silane compound and 7 parts of inorganic gelling material, wherein the water-soluble polymer is a mixture of polyacrylamide, sodium alginate, polyvinyl alcohol and water-soluble cellulose, and the weight parts of the mixture are as follows: sodium alginate: polyvinyl alcohol: water-soluble cellulose =3:2:1:1.
in this embodiment, the concrete whiskers are calcium sulfate whiskers and calcium silicate whiskers; the reinforcing agent is calcium silicate; the cross-linking agent is glycerol triglycidyl ether and calcium chloride; the hydrolysable silane compound is KH550; the inorganic cementing material is gypsum; the nanometer attapulgite is modified by p-phenylenediamine.
The gel-type concrete curing agent of the above embodiment is subjected to various performance tests by a conventional test method, and the test results are as follows:
(1) The effective water retention rate of 3d can reach 83 percent, and the compressive strength ratio of 28d reaches 96.8 percent.
(2) The compressive and flexural strength of the concrete test piece cured by the curing agent at each age is higher than that of a dry curing comparison test piece, and the curing agent is close to standard curing and slightly higher than watering curing.
(3) The curing agent can effectively reduce the drying shrinkage of a concrete test piece and improve the anti-permeability, anti-cracking and wear-resisting properties of the concrete, wherein the drying shrinkage value of the concrete 7d is reduced by 44.5%, the 28d water seepage height ratio is 88.6%, the number and the area of 3d cracks are lower than those of a dry curing comparative test piece, the crack reduction rate is 0.991, and the g/m ratio is 250 2 The concrete abrasion loss under the mixing amount is only 1.74kg/m 2 。
(4) The surface water absorption method and the maintenance efficiency index CEI can better evaluate the maintenance effect of the maintenance method, and the water absorption of the surface of the maintenance agent maintenance test piece 3d is 3.4 multiplied by 10 -6 cm 2 And/s, the ratio is reduced by 42.1% compared with a comparative sample, and the CEI of a maintenance test piece maintained by the maintenance agent in the maintenance period is greater than that of dry maintenance.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. A gel type concrete curing agent is characterized in that: the curing agent comprises the following raw materials in parts by weight: 50-80 parts of water-soluble polymer, 10-20 parts of lamellar nano-intercalation modified clay, 5-10 parts of concrete whisker, 1-5 parts of reinforcing agent, 3-7 parts of polyaspartic acid, 1-5 parts of four-arm polyethylene glycol, 4-8 parts of potassium humate, 5-15 parts of nano-attapulgite, 1-5 parts of styrylpyridine, 1-5 parts of quinoline carboxylate, 1-3 parts of xanthan gum, 5-12 parts of polyoxyethylene-polystyrene-polyoxyethylene block copolymer, 10-20 parts of cross-linking agent, 5-10 parts of hydrolysable silane compound and 5-10 parts of inorganic gelling material, wherein the water-soluble polymer is a mixture of polyacrylamide, sodium alginate, polyvinyl alcohol and water-soluble cellulose.
2. The gel-type concrete curing agent according to claim 1, wherein: polyacrylamide according to the weight portion: sodium alginate: polyvinyl alcohol: water-soluble cellulose =3:2:1:1.
3. the gel-type concrete curing agent according to claim 1, characterized in that: the mortar also comprises 100-200 parts of mud.
4. The gel-type concrete curing agent according to claim 2, wherein: the concrete whisker is at least one of calcium sulfate whisker and calcium silicate whisker.
5. The gel-type concrete curing agent according to claim 4, wherein: the reinforcing agent is at least one of sodium silicate, calcium silicate and triethanolamine.
6. A gel-type concrete curing agent according to claim 5, wherein: the cross-linking agent is at least one of methylene bisacrylamide, borax, glycerol triglycidyl ether and calcium chloride.
7. The gel-type concrete curing agent according to claim 6, wherein: the hydrolysable silane compound is at least one of KH550, KH560 and tetraethyl silicate.
8. The gel-type concrete curing agent according to claim 7, wherein: the inorganic cementing material is at least one of gypsum, phosphorus-magnesium cement and magnesium oxychloride cement.
9. The gel-type concrete curing agent according to claim 8, wherein: the nanometer attapulgite is modified by p-phenylenediamine.
10. The gel-type concrete curing agent according to claim 1, wherein: the curing agent comprises the following raw materials in parts by weight: 65 parts of water-soluble polymer, 15 parts of lamellar nano-intercalation modified clay, 7 parts of concrete whisker, 3 parts of reinforcing agent, 5 parts of polyaspartic acid, 3 parts of four-arm polyethylene glycol, 5 parts of potassium humate, 10 parts of nano-attapulgite, 3 parts of styrylpyridine, 3 parts of quinoline carboxylate, 2 parts of xanthan gum, 8 parts of polyoxyethylene-polystyrene-polyoxyethylene block copolymer, 15 parts of cross-linking agent, 7 parts of hydrolyzable silane compound and 7 parts of inorganic cementing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210743627.0A CN115180973B (en) | 2022-06-28 | 2022-06-28 | Gel type concrete curing agent |
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| JP2008285367A (en) * | 2007-05-18 | 2008-11-27 | Nihon-Prost Co Ltd | Coating film curing and reinforcing agent for mortar or concrete |
| CN101525492A (en) * | 2009-03-27 | 2009-09-09 | 重庆交通大学 | Phyllosilicate nano modified asphalt by dual processing of intercalation and coupling and preparation method thereof |
| CN101942167A (en) * | 2010-09-10 | 2011-01-12 | 天津工业大学 | Nanometer clay-containing high absorptive hydrogel as well as preparation method and application thereof |
| CN105330783A (en) * | 2015-11-18 | 2016-02-17 | 江苏苏博特新材料股份有限公司 | Preparation method of silane modified concrete internal curing agent |
| CN107162637A (en) * | 2017-06-29 | 2017-09-15 | 陈春阳 | A kind of environment-friendly type concrete sealing compound and preparation method thereof |
| CN107935433A (en) * | 2017-10-13 | 2018-04-20 | 长安大学 | High performance concrete delays conserving material and preparation method thereof in controlled release water |
| CN112723788A (en) * | 2021-01-15 | 2021-04-30 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Efficient water-saving maintenance material |
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| JP2008285367A (en) * | 2007-05-18 | 2008-11-27 | Nihon-Prost Co Ltd | Coating film curing and reinforcing agent for mortar or concrete |
| CN101525492A (en) * | 2009-03-27 | 2009-09-09 | 重庆交通大学 | Phyllosilicate nano modified asphalt by dual processing of intercalation and coupling and preparation method thereof |
| CN101942167A (en) * | 2010-09-10 | 2011-01-12 | 天津工业大学 | Nanometer clay-containing high absorptive hydrogel as well as preparation method and application thereof |
| CN105330783A (en) * | 2015-11-18 | 2016-02-17 | 江苏苏博特新材料股份有限公司 | Preparation method of silane modified concrete internal curing agent |
| CN107162637A (en) * | 2017-06-29 | 2017-09-15 | 陈春阳 | A kind of environment-friendly type concrete sealing compound and preparation method thereof |
| CN107935433A (en) * | 2017-10-13 | 2018-04-20 | 长安大学 | High performance concrete delays conserving material and preparation method thereof in controlled release water |
| CN112723788A (en) * | 2021-01-15 | 2021-04-30 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Efficient water-saving maintenance material |
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