A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Concrete water reducer and preparation method thereof
The invention relates to a concrete water reducing agent. The concrete water reducing agent is characterized by being prepared from the following raw materials in parts by weight: 10 to 20 parts of acarboxyl modified N-vinyl carbazole/polyethylene glycol mono-allyl ether/5-vinyl-1,2,4-oxadiazole-3-carboxylic acid ethyl ester copolymer, 5 to 10 parts of 3-aminopyrazine-2-carboxylic acid modified epoxy terminated hyperbranched poly(amine-ester), 2 to 4 parts of rare earth metal organic framework, 3 to 6 parts of N-sulfo chitosan and 30 to 40 parts of water. The invention also provides a preparation method of the concrete water reducing agent. The concrete water reducing agent is low in mixing amount, strong in water reducing performance and good in plasticizing effect, has no negative influence on the comprehensive performance of concrete, can obviously improve the flowability and the working performance of cement concrete of machine-made sand, improves the strength, the durability andthe thawing-freezing resistance of concrete, and is good in adaptability to the concrete.
本发明涉及一种混凝土减水剂，其特征在于，是由如下重量份的各原料制成：羧基改性N‑乙烯基咔唑/聚乙二醇单烯丙基醚/5‑乙烯基‑1,2,4‑恶二唑‑3‑羧酸乙酯共聚物10‑20份、3‑氨基吡嗪‑2‑羧酸改性环氧端基超支化聚(胺‑酯)5‑10份、稀土金属有机框架2‑4份、N‑磺基壳聚糖3‑6份、水30‑40份。本发明还提供了所述一种混凝土减水剂的制备方法。本发明公开的混凝土减水剂掺量低，减水性高，增塑效果好，对混凝土综合性能没有负面影响，可明显改善机制砂的水泥混凝土的流动性和工作性能，提高混凝土的强度、耐久性和抗融冻性，与混凝土适应性好。
Concrete water reducer and preparation method thereof
The invention relates to a concrete water reducing agent. The concrete water reducing agent is characterized by being prepared from the following raw materials in parts by weight: 10 to 20 parts of acarboxyl modified N-vinyl carbazole/polyethylene glycol mono-allyl ether/5-vinyl-1,2,4-oxadiazole-3-carboxylic acid ethyl ester copolymer, 5 to 10 parts of 3-aminopyrazine-2-carboxylic acid modified epoxy terminated hyperbranched poly(amine-ester), 2 to 4 parts of rare earth metal organic framework, 3 to 6 parts of N-sulfo chitosan and 30 to 40 parts of water. The invention also provides a preparation method of the concrete water reducing agent. The concrete water reducing agent is low in mixing amount, strong in water reducing performance and good in plasticizing effect, has no negative influence on the comprehensive performance of concrete, can obviously improve the flowability and the working performance of cement concrete of machine-made sand, improves the strength, the durability andthe thawing-freezing resistance of concrete, and is good in adaptability to the concrete.
本发明涉及一种混凝土减水剂，其特征在于，是由如下重量份的各原料制成：羧基改性N‑乙烯基咔唑/聚乙二醇单烯丙基醚/5‑乙烯基‑1,2,4‑恶二唑‑3‑羧酸乙酯共聚物10‑20份、3‑氨基吡嗪‑2‑羧酸改性环氧端基超支化聚(胺‑酯)5‑10份、稀土金属有机框架2‑4份、N‑磺基壳聚糖3‑6份、水30‑40份。本发明还提供了所述一种混凝土减水剂的制备方法。本发明公开的混凝土减水剂掺量低，减水性高，增塑效果好，对混凝土综合性能没有负面影响，可明显改善机制砂的水泥混凝土的流动性和工作性能，提高混凝土的强度、耐久性和抗融冻性，与混凝土适应性好。
Concrete water reducer and preparation method thereof
一种混凝土减水剂及其制备方法
ZHAO JIANQING (author)
2020-07-03
Patent
Electronic Resource
Chinese