Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Polycarboxylic acid type composite concrete water reducer and preparation method thereof
The invention discloses a preparation method of a polycarboxylic acid type composite concrete water reducer. The preparation method comprises the following steps: preparing an additive solid phase C; then mixing isopentenyl polyoxyethylene ether, ammonium persulfate and deionized water to form a mixed solution A, mixing acrylic acid, 2-methyl-2-acrylic acid-2-hydroxyethyl ester phosphate and deionized water to form a mixed solution B, and mixing 3-mercaptopropionic acid, vitamin C and deionized water to form a mixed solution C; adding the solid phase C into the mixed solution A, dropwise adding the mixed solution B, the mixed solution C and hydrogen peroxide into the mixed solution A at the same time, continuously stirring the mixed solution for 2 hours at the temperature of 60 +/-2 DEG C after dropwise adding is completed, and then air-cooling to normal temperature to obtain the water reducing agent. The water reducing agent prepared by the method disclosed by the invention has a relatively high water reducing rate, and the compressive strength of concrete can be remarkably improved.
本发明公开了一种聚羧酸型复合混凝土减水剂的制备方法，包含如下步骤：制备添加剂固相C；然后将异戊烯基聚氧乙烯醚、过硫酸铵和去离子水混合形成混液A，将丙烯酸、2‑甲基‑2‑丙烯酸‑2‑羟乙基酯磷酸酯和去离子水混合形成混液B，将3‑巯基丙酸、维生素C和去离子水混合形成混液C；向所述混液A加入所述固相C，再同时向混液A中滴加所述混液B、混液C和双氧水，滴加完成后继续60±2℃保温搅拌混液2h，然后空冷至常温，获得所述减水剂。本发明所述方法制备的减水剂具有较高的减水率，且能够显著提高混凝土的抗压强度。
Polycarboxylic acid type composite concrete water reducer and preparation method thereof
The invention discloses a preparation method of a polycarboxylic acid type composite concrete water reducer. The preparation method comprises the following steps: preparing an additive solid phase C; then mixing isopentenyl polyoxyethylene ether, ammonium persulfate and deionized water to form a mixed solution A, mixing acrylic acid, 2-methyl-2-acrylic acid-2-hydroxyethyl ester phosphate and deionized water to form a mixed solution B, and mixing 3-mercaptopropionic acid, vitamin C and deionized water to form a mixed solution C; adding the solid phase C into the mixed solution A, dropwise adding the mixed solution B, the mixed solution C and hydrogen peroxide into the mixed solution A at the same time, continuously stirring the mixed solution for 2 hours at the temperature of 60 +/-2 DEG C after dropwise adding is completed, and then air-cooling to normal temperature to obtain the water reducing agent. The water reducing agent prepared by the method disclosed by the invention has a relatively high water reducing rate, and the compressive strength of concrete can be remarkably improved.
本发明公开了一种聚羧酸型复合混凝土减水剂的制备方法，包含如下步骤：制备添加剂固相C；然后将异戊烯基聚氧乙烯醚、过硫酸铵和去离子水混合形成混液A，将丙烯酸、2‑甲基‑2‑丙烯酸‑2‑羟乙基酯磷酸酯和去离子水混合形成混液B，将3‑巯基丙酸、维生素C和去离子水混合形成混液C；向所述混液A加入所述固相C，再同时向混液A中滴加所述混液B、混液C和双氧水，滴加完成后继续60±2℃保温搅拌混液2h，然后空冷至常温，获得所述减水剂。本发明所述方法制备的减水剂具有较高的减水率，且能够显著提高混凝土的抗压强度。
Polycarboxylic acid type composite concrete water reducer and preparation method thereof
一种聚羧酸型复合混凝土减水剂及其制备方法
DENG CHENGHONG (Autor:in) / TAO ZHENDONG (Autor:in) / KATOU KEN (Autor:in) / TANG ZHIRONG (Autor:in) / SUN YAN (Autor:in) / LIU JIAN (Autor:in)
01.10.2024
Patent
Elektronische Ressource
Chinesisch
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