CN104119020A - Retarding water-reducing crack arresting agent - Google Patents

Abstract

The invention discloses a retarding water-reducing crack arresting agent. The retarding water-reducing crack arresting agent is prepared from the raw materials in parts by weight: 24-36 parts of sodium lignosulfonate, 14-26 parts of calcium propionate, 15-25 parts of bischofite powder, 48-54 parts of UNF-5 type efficient water-reducing agent, 35-45 parts of FDN-II type efficient water-reducing retarder, 10-15 parts of poly(methacrylate hyroxyehthyl ester), 10-15 parts of nano-carbon fiber, 7-11 parts of potassium dihydrogen phosphate, 4-8 parts of wormwood seed powder, 6-9 parts of sodium meta-aluminate, 10-15 parts of manganese slag, 3-6 parts of p-toluene sulfonic acid, 4-7 parts of benzotriazole, 4.5-6.5 parts of dithiodiglycolic acid, 2-4 parts of hydroxyethyl oil acid imidazoline betaine and 4-6 parts of promoter. The retarding water-reducing crack arresting agent has the characteristics of high shrinkage rate, strong crack resistance, strong toughness and strong freezing resistance, can be used for effectively reducing the shrinkage of concrete and preventing dry-shrinkage cracks, and also has the effect of efficient water reduction, and the water-reducing rate can be 15-25%. With the adoption of the retarding water-reducing crack arresting agent, the workability and the fluidity of fresh concrete are obviously improved, the bleeding and segregation phenomena do not occur after the concrete is mixed, the retarding effect is good, the slump loss is little, and the long-distance transportation is facilitated.

Description

Slow setting diminishing crack inhibitor

Technical field

The present invention relates to a kind of slow setting diminishing crack inhibitor, belong to concrete admixture field.

Background technology

Concrete admixture, is called for short admixture, refers to before mixing concrete mixing or in mix process, mixes to improve the material of concrete performance.Because admixture can improve concrete performance effectively, and have good economic benefit, in many countries, be all widely used, the application in engineering more and more comes into one's own, and becomes material indispensable in concrete.Wherein slow setting diminishing crack inhibitor is a kind of in concrete admixture, and the appropriateness that it and hydrolysis product of cement generation chemical reaction produce expands, shrinkage cracking that can compensating concrete, thus promote concrete crack resistance, and have the effect of slow setting diminishing concurrently.But the splitting resistance of the crack inhibitor that used in the market still cannot meet the large area concrete engineering that expansion joint is stayed in the requirements such as highway, viaduct, airfield runway less.

Summary of the invention

To the object of the invention is the defect existing in prior art in order solving, the slow setting diminishing crack inhibitor of a kind of high decrement, high cracking resistance, high tenacity, high water reducing ability to be provided.

For achieving the above object, the technical solution used in the present invention is as follows:

A slow setting diminishing crack inhibitor, is mixed by the raw material of following weight part: sodium lignosulfonate 24-36, calcium propionate 14-26, bischofite powder 15-25, UNF-5 type high efficiency water reducing agent 48-54, FDN-II type efficient retarding and water reducing agent 35-45, poly hydroxy ethyl acrylate 10-15, carbon nano fiber 10-15, potassium primary phosphate 7-11, sand sagebrush (Artemisia filifolia) seed powder 4-8, sodium metaaluminate 6-9, electrolytic manganese residues 10-15, p-methyl benzenesulfonic acid 3-6, benzotriazole 4-7, Thiodiglycol 4.5-6.5, hydroxyethyl oleic imidazolinone trimethyl-glycine 2-4, auxiliary agent 4-6;

The preparation method of described auxiliary agent is as follows: a, get the raw material of following weight part: activated magnesia 5-10, tuff micro mist 10-15, desulphurize fly ash 9-16, melamine urea-formaldehyde resin 12-18, microporous calcium silicate 6-12, polyisobutene 5-10, tertiary ethylene carbonate 4-6,2-methyl-2,4-pentanediol polyoxyethylene polyoxypropylene ether 2-4, sodium pentachlorophenol 1.5-2.5, Coconut Fatty Acid Monoethanolamide 3-5, bone meal 4-8, Poly Dimethyl Diallyl Ammonium Chloride 2-4, sulfonated phenylethylene-maleic anhydride copolymer 5-10; B, by sulfonated phenylethylene-maleic anhydride copolymer, Poly Dimethyl Diallyl Ammonium Chloride, 2-methyl-2,4-pentanediol polyoxyethylene polyoxypropylene ether mixes, then add successively activated magnesia, tuff micro mist, desulphurize fly ash, under 45-55 ℃ of bath temperature, stir 10-15min, be cooled to normal temperature, dry, obtain compound A; C, bone meal, microporous calcium silicate are mixed, then add successively melamine urea-formaldehyde resin, Coconut Fatty Acid Monoethanolamide, polyisobutene, tertiary ethylene carbonate, sodium pentachlorophenol, high speed dispersion 5-10min, dries, and obtains compound B; D, compound A and compound B are mixed, obtain described auxiliary agent.

Beneficial effect of the present invention:

Crack inhibitor of the present invention not only has the feature of high decrement, high cracking resistance, high tenacity, freezing tolerance, effectively reduce concrete contraction, prevent from causing cup shake, also have the effect of efficient diminishing, water-reducing rate can reach 15-25%, obviously improve fresh concrete workability, mobility, and bleeding not after mix, does not emanate, retarding effect is good simultaneously, little loss of slump, is conducive to long-distance transportation.

Embodiment

A slow setting diminishing crack inhibitor, is mixed by the raw material of following weight (kg): sodium lignosulfonate 32, calcium propionate 24, bischofite powder 20, UNF-5 type high efficiency water reducing agent 50, FDN-II type efficient retarding and water reducing agent 40, poly hydroxy ethyl acrylate 12, carbon nano fiber 15, potassium primary phosphate 9, sand sagebrush (Artemisia filifolia) seed powder 6, sodium metaaluminate 7, electrolytic manganese residues 12, p-methyl benzenesulfonic acid 4, benzotriazole 6, Thiodiglycol 5.5, hydroxyethyl oleic imidazolinone trimethyl-glycine 3, auxiliary agent 5;

The preparation method of described auxiliary agent is as follows: a, get the raw material of following weight part: activated magnesia 6, tuff micro mist 12, desulphurize fly ash 14, melamine urea-formaldehyde resin 16, microporous calcium silicate 10, polyisobutene 7, tertiary ethylene carbonate 5,2-methyl-2,4-pentanediol polyoxyethylene polyoxypropylene ether 2.5, sodium pentachlorophenol 2, Coconut Fatty Acid Monoethanolamide 4.5, bone meal 6, Poly Dimethyl Diallyl Ammonium Chloride 3, sulfonated phenylethylene-maleic anhydride copolymer 8; B, by sulfonated phenylethylene-maleic anhydride copolymer, Poly Dimethyl Diallyl Ammonium Chloride, 2-methyl-2,4-pentanediol polyoxyethylene polyoxypropylene ether mixes, then add successively activated magnesia, tuff micro mist, desulphurize fly ash, under 45 ℃ of bath temperatures, stir 15min, be cooled to normal temperature, dry, obtain compound A; C, bone meal, microporous calcium silicate are mixed, then add successively melamine urea-formaldehyde resin, Coconut Fatty Acid Monoethanolamide, polyisobutene, tertiary ethylene carbonate, sodium pentachlorophenol, high speed dispersion 10min, dries, and obtains compound B; D, compound A and compound B are mixed, obtain described auxiliary agent.

The salient features detected result that the above-mentioned slow setting diminishing crack inhibitor making mixes in concrete is as shown in the table:

Claims (1)

1. a slow setting diminishing crack inhibitor, it is characterized in that, raw material by following weight part mixes: sodium lignosulfonate 24-36, calcium propionate 14-26, bischofite powder 15-25, UNF-5 type high efficiency water reducing agent 48-54, FDN-II type efficient retarding and water reducing agent 35-45, poly hydroxy ethyl acrylate 10-15, carbon nano fiber 10-15, potassium primary phosphate 7-11, sand sagebrush (Artemisia filifolia) seed powder 4-8, sodium metaaluminate 6-9, electrolytic manganese residues 10-15, p-methyl benzenesulfonic acid 3-6, benzotriazole 4-7, Thiodiglycol 4.5-6.5, hydroxyethyl oleic imidazolinone trimethyl-glycine 2-4, auxiliary agent 4-6,

The preparation method of described auxiliary agent is as follows: a, get the raw material of following weight part: activated magnesia 5-10, tuff micro mist 10-15, desulphurize fly ash 9-16, melamine urea-formaldehyde resin 12-18, microporous calcium silicate 6-12, polyisobutene 5-10, tertiary ethylene carbonate 4-6,2-methyl-2,4-pentanediol polyoxyethylene polyoxypropylene ether 2-4, sodium pentachlorophenol 1.5-2.5, Coconut Fatty Acid Monoethanolamide 3-5, bone meal 4-8, Poly Dimethyl Diallyl Ammonium Chloride 2-4, sulfonated phenylethylene-maleic anhydride copolymer 5-10; B, by sulfonated phenylethylene-maleic anhydride copolymer, Poly Dimethyl Diallyl Ammonium Chloride, 2-methyl-2,4-pentanediol polyoxyethylene polyoxypropylene ether mixes, then add successively activated magnesia, tuff micro mist, desulphurize fly ash, under 45-55 ℃ of bath temperature, stir 10-15min, be cooled to normal temperature, dry, obtain compound A; C, bone meal, microporous calcium silicate are mixed, then add successively melamine urea-formaldehyde resin, Coconut Fatty Acid Monoethanolamide, polyisobutene, tertiary ethylene carbonate, sodium pentachlorophenol, high speed dispersion 5-10min, dries, and obtains compound B; D, compound A and compound B are mixed, obtain described auxiliary agent.