Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Concrete viscosity reducer and preparation method thereof
The invention provides a concrete viscosity reducer and a preparation method thereof, the concrete viscosity reducer is prepared from sorbitol polyoxyethylene ether, glycerol polyoxyethylene ether, phosphorus pentoxide and a sodium hydroxide solution, the molar ratio of sorbitol polyoxyethylene ether to glycerol polyoxyethylene ether is 1: (2-5), and the molar ratio of phosphorus pentoxide to sodium hydroxide solution is 1: (2-5). The molar ratio of the sum of the mole numbers of the hydroxyl groups of the sorbitol polyoxyethylene ether and the glycerol polyoxyethylene ether to the phosphorus pentoxide is 2: 1, and the mass concentration of the sodium hydroxide solution is 30%. The organophosphate salt prepared by the invention is used as a concrete viscosity reducer to be matched with a polycarboxylic acid water reducer, so that the time for completely emptying the slump of a concrete mixture in a rewinding manner is saved by more than 25%, the workability of concrete is remarkably improved, and the organophosphate salt has the characteristics of simple process, high safety, low energy consumption and low production cost.
本发明提供了一种混凝土降粘剂及其制备方法，混凝土降粘剂由山梨醇聚氧乙烯醚、甘油聚氧乙烯醚、五氧化二磷和氢氧化钠溶液制备而成，其中山梨醇聚氧乙烯醚与甘油聚氧乙烯醚摩尔比为1：2～5，山梨醇聚氧乙烯醚和甘油聚氧乙烯醚的羟基摩尔数之和与五氧化二磷的摩尔比为2：1，氢氧化钠溶液质量浓度为30％。本发明制备的有机磷酸酯盐作为混凝土降粘剂与聚羧酸减水剂配合使用，混凝土拌合物坍落度倒筒全部排空时间节省25％以上，显著提高混凝土工作性，具有工艺简单、安全性高、能耗小、生产成本低的特点。
Concrete viscosity reducer and preparation method thereof
The invention provides a concrete viscosity reducer and a preparation method thereof, the concrete viscosity reducer is prepared from sorbitol polyoxyethylene ether, glycerol polyoxyethylene ether, phosphorus pentoxide and a sodium hydroxide solution, the molar ratio of sorbitol polyoxyethylene ether to glycerol polyoxyethylene ether is 1: (2-5), and the molar ratio of phosphorus pentoxide to sodium hydroxide solution is 1: (2-5). The molar ratio of the sum of the mole numbers of the hydroxyl groups of the sorbitol polyoxyethylene ether and the glycerol polyoxyethylene ether to the phosphorus pentoxide is 2: 1, and the mass concentration of the sodium hydroxide solution is 30%. The organophosphate salt prepared by the invention is used as a concrete viscosity reducer to be matched with a polycarboxylic acid water reducer, so that the time for completely emptying the slump of a concrete mixture in a rewinding manner is saved by more than 25%, the workability of concrete is remarkably improved, and the organophosphate salt has the characteristics of simple process, high safety, low energy consumption and low production cost.
本发明提供了一种混凝土降粘剂及其制备方法，混凝土降粘剂由山梨醇聚氧乙烯醚、甘油聚氧乙烯醚、五氧化二磷和氢氧化钠溶液制备而成，其中山梨醇聚氧乙烯醚与甘油聚氧乙烯醚摩尔比为1：2～5，山梨醇聚氧乙烯醚和甘油聚氧乙烯醚的羟基摩尔数之和与五氧化二磷的摩尔比为2：1，氢氧化钠溶液质量浓度为30％。本发明制备的有机磷酸酯盐作为混凝土降粘剂与聚羧酸减水剂配合使用，混凝土拌合物坍落度倒筒全部排空时间节省25％以上，显著提高混凝土工作性，具有工艺简单、安全性高、能耗小、生产成本低的特点。
Concrete viscosity reducer and preparation method thereof
一种混凝土降粘剂及其制备方法
LI GUOYUN (Autor:in) / JIANG XIAOMING (Autor:in) / QIU AILIN (Autor:in) / FU YAN (Autor:in)
13.02.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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