A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Slow-release water reducing agent for concrete and preparation method thereof
The invention discloses a slow-release water reducer for concrete and a preparation method of the slow-release water reducer. The slow-release water reducer comprises the following raw materials in parts by weight: 15-20 parts of methyl alkenyl polyoxyethylene ether; 10 to 20 parts of isopentenol polyoxyethylene ether; 6 to 10 parts of methyl methacrylate; 5 to 8 parts of vinyl dimethyl carboxylate; 8 to 12 parts of allyl dimethyl carboxylate; 15 to 25 parts of acrylic acid; 10 to 20 parts of sodium sulfonate methacrylate; 1-3 parts of hydrogen peroxide; 1-4 parts of a reducing agent; 2 to 4 parts of sodium hypophosphite; 3-6 parts of an oxidant; 1-2 parts of a chain transfer agent; 3-8 parts of an alcohol amine compound; and 120 to 150 parts of deionized water. When the slow-release water reducing agent for the concrete is applied, the slump retention capacity of the concrete can reach 3-5 hours, so that the slump retaining performance of the concrete in the later period becomes controllable, the phenomena of bleeding, segregation and the like of the concrete can be avoided as much as possible, and long-distance conveying and pumping of the concrete can be realized.
本发明公开了一种混凝土用缓释型减水剂及其制备方法，它包括下述重量份的原料：甲基烯基聚氧乙烯醚15‑20份；异戊烯醇聚氧乙烯醚10‑20份；甲基丙烯酸甲酯6‑10份；乙烯基羧酸二甲酯5‑8份；丙烯基羧酸二甲酯8‑12份；丙烯酸15‑25份；甲基丙烯酸磺酸钠10‑20份；双氧水1‑3份；还原剂1‑4份；次亚磷酸钠2‑4份；氧化剂3‑6份；链转移剂1‑2份；醇胺类化合物3‑8份；去离子水120‑150份。本发明提供的混凝土用缓释型减水剂，在应用时，混凝土的坍落度的保持能力可达到3～5h，让混凝土后期的保坍性能变得可控，可尽量避免混凝土容易出现泌水、离析等现象，可以实现混凝土的远距离输送和泵送。
Slow-release water reducing agent for concrete and preparation method thereof
The invention discloses a slow-release water reducer for concrete and a preparation method of the slow-release water reducer. The slow-release water reducer comprises the following raw materials in parts by weight: 15-20 parts of methyl alkenyl polyoxyethylene ether; 10 to 20 parts of isopentenol polyoxyethylene ether; 6 to 10 parts of methyl methacrylate; 5 to 8 parts of vinyl dimethyl carboxylate; 8 to 12 parts of allyl dimethyl carboxylate; 15 to 25 parts of acrylic acid; 10 to 20 parts of sodium sulfonate methacrylate; 1-3 parts of hydrogen peroxide; 1-4 parts of a reducing agent; 2 to 4 parts of sodium hypophosphite; 3-6 parts of an oxidant; 1-2 parts of a chain transfer agent; 3-8 parts of an alcohol amine compound; and 120 to 150 parts of deionized water. When the slow-release water reducing agent for the concrete is applied, the slump retention capacity of the concrete can reach 3-5 hours, so that the slump retaining performance of the concrete in the later period becomes controllable, the phenomena of bleeding, segregation and the like of the concrete can be avoided as much as possible, and long-distance conveying and pumping of the concrete can be realized.
本发明公开了一种混凝土用缓释型减水剂及其制备方法，它包括下述重量份的原料：甲基烯基聚氧乙烯醚15‑20份；异戊烯醇聚氧乙烯醚10‑20份；甲基丙烯酸甲酯6‑10份；乙烯基羧酸二甲酯5‑8份；丙烯基羧酸二甲酯8‑12份；丙烯酸15‑25份；甲基丙烯酸磺酸钠10‑20份；双氧水1‑3份；还原剂1‑4份；次亚磷酸钠2‑4份；氧化剂3‑6份；链转移剂1‑2份；醇胺类化合物3‑8份；去离子水120‑150份。本发明提供的混凝土用缓释型减水剂，在应用时，混凝土的坍落度的保持能力可达到3～5h，让混凝土后期的保坍性能变得可控，可尽量避免混凝土容易出现泌水、离析等现象，可以实现混凝土的远距离输送和泵送。
Slow-release water reducing agent for concrete and preparation method thereof
一种混凝土用缓释型减水剂及其制备方法
XIAN FANGYAN (author) / YU JIANHUA (author) / YANG KAI (author) / ZHANG QIUPING (author) / WANG CHENGLONG (author) / WANG YING (author)
2023-02-03
Patent
Electronic Resource
Chinese
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