Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Concrete segregation repairing agent and preparation method thereof
The invention provides a concrete segregation repairing agent and a preparation method thereof. The concrete segregation repairing agent is prepared from the following raw materials: 12-16 parts of sodium metasilicate, 30-42 parts of calcium nitrate tetrahydrate, 30-45 parts of polyacrylic acid, 51-63 parts of acrylamide, 7-12 parts of N, N-methylene diacrylamide, 45-60 parts of magnesium sulfate, 12-20 parts of hydroxyethyl cellulose ether, 0.7-1.3 parts of a reducing agent, 2-3 parts of an oxidizing agent, 1-2.2 parts of a chain transfer agent and 720-900 parts of deionized water. The concrete segregation repairing agent is synthesized through a two-step method, the synthesized intermediate polyacrylic acid-acrylamide cross-linked product is high in conversion rate and simple in process, has good thickening and water retention performance and is energy-saving and environment-friendly, calcium nitrate and sodium metasilicate are used for synthesizing nanoscale water and calcium silicate, dispersion is conducted through the acrylic acid-acrylamide cross-linked product, and the concrete segregation repairing agent is obtained. By matching with magnesium sulfate, the strength of the segregation concrete can be well improved.
本发明提供了一种混凝土离析修复剂及其制备方法，原料为：偏硅酸钠12～16份，四水硝酸钙30～42份，聚丙烯酸30～45份，丙烯酰胺51～63份，N,N‑亚甲基二丙烯酰胺7～12份，硫酸镁45～60份，羟乙基纤维素醚12～20份，还原剂0.7～1.3份，氧化剂2～3份，链转移剂1～2.2份，去离子水720‑900份。本发明使用两步法合成混凝土离析修复剂，合成的中间体聚丙烯酸‑丙烯酰胺交联产物，转换率高且工艺简单，具有良好的增稠保水性能，节能环保，使用硝酸钙与偏硅酸钠合成纳米级的水和硅酸钙，通过丙烯酸‑丙烯酰胺交联产物分散，与硫酸镁搭配能够较好的改善离析混凝土的强度。
Concrete segregation repairing agent and preparation method thereof
The invention provides a concrete segregation repairing agent and a preparation method thereof. The concrete segregation repairing agent is prepared from the following raw materials: 12-16 parts of sodium metasilicate, 30-42 parts of calcium nitrate tetrahydrate, 30-45 parts of polyacrylic acid, 51-63 parts of acrylamide, 7-12 parts of N, N-methylene diacrylamide, 45-60 parts of magnesium sulfate, 12-20 parts of hydroxyethyl cellulose ether, 0.7-1.3 parts of a reducing agent, 2-3 parts of an oxidizing agent, 1-2.2 parts of a chain transfer agent and 720-900 parts of deionized water. The concrete segregation repairing agent is synthesized through a two-step method, the synthesized intermediate polyacrylic acid-acrylamide cross-linked product is high in conversion rate and simple in process, has good thickening and water retention performance and is energy-saving and environment-friendly, calcium nitrate and sodium metasilicate are used for synthesizing nanoscale water and calcium silicate, dispersion is conducted through the acrylic acid-acrylamide cross-linked product, and the concrete segregation repairing agent is obtained. By matching with magnesium sulfate, the strength of the segregation concrete can be well improved.
本发明提供了一种混凝土离析修复剂及其制备方法，原料为：偏硅酸钠12～16份，四水硝酸钙30～42份，聚丙烯酸30～45份，丙烯酰胺51～63份，N,N‑亚甲基二丙烯酰胺7～12份，硫酸镁45～60份，羟乙基纤维素醚12～20份，还原剂0.7～1.3份，氧化剂2～3份，链转移剂1～2.2份，去离子水720‑900份。本发明使用两步法合成混凝土离析修复剂，合成的中间体聚丙烯酸‑丙烯酰胺交联产物，转换率高且工艺简单，具有良好的增稠保水性能，节能环保，使用硝酸钙与偏硅酸钠合成纳米级的水和硅酸钙，通过丙烯酸‑丙烯酰胺交联产物分散，与硫酸镁搭配能够较好的改善离析混凝土的强度。
Concrete segregation repairing agent and preparation method thereof
一种混凝土离析修复剂及其制备方法
LIU SIYANG (Autor:in) / HAN LI (Autor:in) / XIONG YULAN (Autor:in) / XU HONGTIAN (Autor:in) / LI XUAN (Autor:in) / PENG YUN (Autor:in) / CHEN HUAN (Autor:in)
13.01.2023
Patent
Elektronische Ressource
Chinesisch
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