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A platform for research: civil engineering, architecture and urbanism
Anti-segregation agent for concrete, preparation method and application thereof
The invention belongs to the technical field of concrete admixtures, and particularly relates to an anti-segregation agent for concrete, a preparation method and application thereof. The agent is prepared from the following raw materials: acrylic acid, polyethylene glycol terephthalate, hybridized 3-aminopropyl methyl diethoxy silane, carboxymethyl cellulose, polyvinylpyrrolidone, calcium aluminate and lithium carbonate. According to the invention, the anti-segregation agent provided by the invention is small in doping amount, and the prepared concrete is free of segregation and bleeding and keeps good fluidity, so that the concrete is good in slump retaining property, the compressive strength is improved, and the setting time is short; and the hybrid 3-aminopropyl methyl diethoxy silane is added, so that the compatibility among the raw materials is good, the high temperature resistance of the concrete is improved, meanwhile, the adaptability to cement is good, and the requirements for the concrete in super high-rise pumping, long-distance transportation and high-temperature operation environments are met.
本发明属于混凝土外加剂技术领域，具体涉及一种混凝土用抗离析剂及其制备方法、应用。该离析剂通过以下原料制备而成：丙烯酸、聚对苯二甲酸乙二醇酯、杂化3‑氨丙基甲基二乙氧基硅烷、羧甲基纤维素、聚乙烯吡咯烷酮、铝酸钙、碳酸锂。本发明提供的抗离析剂，掺加量小，制备的混凝土不离析、泌水且保持良好的流动性，使得混凝土保坍性好，提高了抗压强度，凝结时间短；本发明通过加入杂化3‑氨丙基甲基二乙氧基硅烷，使得各原料之间相容性好，提高了混凝土的耐高温性能，同时，对水泥的适应性好，满足超高层泵送、远距离运输及高温作业环境下对于混凝土的需求。
Anti-segregation agent for concrete, preparation method and application thereof
The invention belongs to the technical field of concrete admixtures, and particularly relates to an anti-segregation agent for concrete, a preparation method and application thereof. The agent is prepared from the following raw materials: acrylic acid, polyethylene glycol terephthalate, hybridized 3-aminopropyl methyl diethoxy silane, carboxymethyl cellulose, polyvinylpyrrolidone, calcium aluminate and lithium carbonate. According to the invention, the anti-segregation agent provided by the invention is small in doping amount, and the prepared concrete is free of segregation and bleeding and keeps good fluidity, so that the concrete is good in slump retaining property, the compressive strength is improved, and the setting time is short; and the hybrid 3-aminopropyl methyl diethoxy silane is added, so that the compatibility among the raw materials is good, the high temperature resistance of the concrete is improved, meanwhile, the adaptability to cement is good, and the requirements for the concrete in super high-rise pumping, long-distance transportation and high-temperature operation environments are met.
本发明属于混凝土外加剂技术领域，具体涉及一种混凝土用抗离析剂及其制备方法、应用。该离析剂通过以下原料制备而成：丙烯酸、聚对苯二甲酸乙二醇酯、杂化3‑氨丙基甲基二乙氧基硅烷、羧甲基纤维素、聚乙烯吡咯烷酮、铝酸钙、碳酸锂。本发明提供的抗离析剂，掺加量小，制备的混凝土不离析、泌水且保持良好的流动性，使得混凝土保坍性好，提高了抗压强度，凝结时间短；本发明通过加入杂化3‑氨丙基甲基二乙氧基硅烷，使得各原料之间相容性好，提高了混凝土的耐高温性能，同时，对水泥的适应性好，满足超高层泵送、远距离运输及高温作业环境下对于混凝土的需求。
Anti-segregation agent for concrete, preparation method and application thereof
一种混凝土用抗离析剂及其制备方法、应用
TONG LI (author) / SUN HAIBEI (author) / HUANG QING (author)
2021-07-27
Patent
Electronic Resource
Chinese
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