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A high-efficiency water-reducing agent and retarding technology, applied in the field of retarding water-reducing and crack-inhibiting agents, can solve the problem of insufficient crack resistance, and achieve the effects of long-distance transportation, high toughness, and improved workability.
Active Publication Date: 2014-10-29
山东晟瑞新材料有限公司
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However, the crack resistance of crack inhibitors currently used in the market still cannot meet the requirements of large-scale concrete projects such as highways, overpasses, and airport runways that require less expansion joints.
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[0009] A slow-setting and water-reducing and cracking inhibitor, which is made by mixing the following materials (kg): sodium lignosulfonate 32, calcium propionate 24, bischofite powder 20, UNF-5 type superplasticizer 50, FDN-Ⅱ type retarding superplasticizer 40, polyhydroxyethyl methacrylate 12, nano carbon fiber 15, potassium dihydrogen phosphate 9, sand wormwood seed powder 6, sodium metaaluminate 7, electrolytic manganese slag 12, para Benzenesulfonic acid 4, benzotriazole 6, thiodiglycol 5.5, hydroxyethyl oleic acid imidazoline betaine 3, adjuvant 5;
[0010] The preparation method of the auxiliary agent is as follows: a. Take the following parts by weight of raw materials: activated magnesium oxide 6, tuff powder 12, desulfurization ash 14, melamine urea resin 16, microporous calcium silicate 10, polyisobutylene 7, ethylene tertiary carbonate Ester 5, 2-Methyl-2,4-pentanediol polyoxypropylene polyoxyethylene ether 2.5, Sodium pentachlorophenol 2, Coco acid monoethanolamide ...
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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
Technical field [0001] The invention relates to a retarding and water reducing and cracking inhibitor, belonging to the field of concrete admixtures. Background technique [0002] Concrete admixtures, abbreviated as admixtures, refer to substances added to improve the performance of concrete before or during the mixing process. Because admixtures can effectively improve the performance of concrete and have good economic benefits, they have been widely used in many countries, and their application in engineering has attracted more and more attention, becoming an indispensable material in concrete. Among them, the retarding water-reducing and cracking inhibitor is one of the concrete admixtures. The moderate expansion produced by the chemical reaction with the cement hydration product can compensate for the shrinkage and cracking of the concrete, thereby improving the crack resistance of the concrete, and it has a slow The role of condensation. However, the crack resistance of th...
Claims
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