Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Polycarboxylate superplasticizer for cement with high aluminate content
The invention discloses a polycarboxylate superplasticizer for cement with high aluminate content, and belongs to the field of preparation of polycarboxylate superplasticizers. The polycarboxylate superplasticizer is prepared from the following components: 365 g of isopentenyl polyoxyethylene ether 2400, 55-100 g of acrylic acid, 1.5 g of thiohydracrylic acid, 3 g of an oxidizing agent, 1 g of a reducing agent, and 450 g of soft water, wherein the molar ratio of acid to ether in the polycarboxylate superplasticizer is 5/1-9/1. According to the polycarboxylate superplasticizer disclosed by the invention, a charge repulsion principle is utilized, a large amount of acrylic acid is polymerized, a rebate contains a large amount of carboxyl groups, and cement with high aluminate content is favorably dispersed, so that the polycarboxylate superplasticizerhas a very good water reducing rate in fresh concrete of the cement with high aluminate content, the fresh concrete has very good constructability, and the technical defects that in the prior art, the performance of a concrete mixture cannot meet field requirements, and the loss of a cement mixture is very fast in actual construction are overcome.
本发明公开了一种针对铝酸盐含量高的水泥的聚羧酸减水剂，属于聚羧酸减水剂的制备领域，本发明的聚羧酸减水剂由以下组分制备：异戊烯基聚氧乙烯醚2400为：365g；丙烯酸为：55~100 g；巯基丙酸为：1.5 g；氧化剂为：3 g；还原剂为：1g；软水：450 g；所述的聚羧酸减水剂中酸醚摩尔比在5/1‑9/1。本发明的减水剂利用电荷排斥原理，大量丙烯酸聚合，使返利中含有大量的羧基，利于含铝酸盐高的水泥分散，因此其在铝酸盐含量高的水泥的新拌混凝土中具有很好的减水率，并使新拌混凝土具有很好的施工性，解决了现有技术中存在的混凝土拌合物性能无法满足现场要求以及在实际施工中的水泥拌合物损失特快的技术缺陷。
Polycarboxylate superplasticizer for cement with high aluminate content
The invention discloses a polycarboxylate superplasticizer for cement with high aluminate content, and belongs to the field of preparation of polycarboxylate superplasticizers. The polycarboxylate superplasticizer is prepared from the following components: 365 g of isopentenyl polyoxyethylene ether 2400, 55-100 g of acrylic acid, 1.5 g of thiohydracrylic acid, 3 g of an oxidizing agent, 1 g of a reducing agent, and 450 g of soft water, wherein the molar ratio of acid to ether in the polycarboxylate superplasticizer is 5/1-9/1. According to the polycarboxylate superplasticizer disclosed by the invention, a charge repulsion principle is utilized, a large amount of acrylic acid is polymerized, a rebate contains a large amount of carboxyl groups, and cement with high aluminate content is favorably dispersed, so that the polycarboxylate superplasticizerhas a very good water reducing rate in fresh concrete of the cement with high aluminate content, the fresh concrete has very good constructability, and the technical defects that in the prior art, the performance of a concrete mixture cannot meet field requirements, and the loss of a cement mixture is very fast in actual construction are overcome.
本发明公开了一种针对铝酸盐含量高的水泥的聚羧酸减水剂，属于聚羧酸减水剂的制备领域，本发明的聚羧酸减水剂由以下组分制备：异戊烯基聚氧乙烯醚2400为：365g；丙烯酸为：55~100 g；巯基丙酸为：1.5 g；氧化剂为：3 g；还原剂为：1g；软水：450 g；所述的聚羧酸减水剂中酸醚摩尔比在5/1‑9/1。本发明的减水剂利用电荷排斥原理，大量丙烯酸聚合，使返利中含有大量的羧基，利于含铝酸盐高的水泥分散，因此其在铝酸盐含量高的水泥的新拌混凝土中具有很好的减水率，并使新拌混凝土具有很好的施工性，解决了现有技术中存在的混凝土拌合物性能无法满足现场要求以及在实际施工中的水泥拌合物损失特快的技术缺陷。
Polycarboxylate superplasticizer for cement with high aluminate content
一种针对铝酸盐含量高的水泥的聚羧酸减水剂
LIU BIN (Autor:in) / HUA LI (Autor:in) / LIU XIAOMIN (Autor:in) / YE ANCHENG (Autor:in) / CHENG HUI (Autor:in)
08.10.2021
Patent
Elektronische Ressource
Chinesisch
| Europäisches Patentamt | 2023