A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Efficient retarding and water reducing agent for cement concrete and preparation method of efficient retarding and water reducing agent
The invention relates to the technical field of water reducing agents, in particular to an efficient retarding water reducing agent for cement concrete and a preparation method of the efficient retarding water reducing agent. Comprising the following raw materials in parts by mass: 80-100 parts of polyethylene glycol methyl ether methacrylate, 20-30 parts of methacrylic acid, 40-70 parts of 2-hydroxyphosphonoacetic acid, 10-20 parts of maleic anhydride, 10-30 parts of a phosphoric acid sustained release agent, 2-3 parts of an initiator, 3-5 parts of a chain transfer agent and 150-300 parts of deionized water. The water reducer disclosed by the invention has a good function of reducing the mixing water consumption, the complexing capability on calcium ions in cement is improved, meanwhile, the adsorption capability of the polycarboxylic acid water reducer and cement concrete can be improved, the dispersing capability of the water reducer on the concrete is improved, and the water reducer has a good delayed coagulation effect and can be used for preparing cement concrete. The workability and flowability of cement concrete are effectively improved, the concrete structure is improved, and the strength is improved.
本发明涉及减水剂技术领域，具体涉及一种水泥混凝土用高效缓凝减水剂及其制备方法。包括以下质量份数的原料有聚乙二醇甲醚甲基丙烯酸酯80～100份、甲基丙烯酸20～30份、2‑羟基膦酰基乙酸40～70份、马来酸酐10～20份、磷酸缓释剂10～30份、引发剂2～3份、链转移剂3～5份、去离子水150～300份；本发明的减水剂具有良好的减少拌合用水量功能，对水泥中钙离子的络合能力提升，同时能够提高了聚羧酸减水剂与水泥混凝土的吸附能力，改善了减水剂对混凝土的分散能力，具有良好的缓凝效果，有效改善水泥混凝土的和易性和流动性，改善混凝土结构，提高强度。
Efficient retarding and water reducing agent for cement concrete and preparation method of efficient retarding and water reducing agent
The invention relates to the technical field of water reducing agents, in particular to an efficient retarding water reducing agent for cement concrete and a preparation method of the efficient retarding water reducing agent. Comprising the following raw materials in parts by mass: 80-100 parts of polyethylene glycol methyl ether methacrylate, 20-30 parts of methacrylic acid, 40-70 parts of 2-hydroxyphosphonoacetic acid, 10-20 parts of maleic anhydride, 10-30 parts of a phosphoric acid sustained release agent, 2-3 parts of an initiator, 3-5 parts of a chain transfer agent and 150-300 parts of deionized water. The water reducer disclosed by the invention has a good function of reducing the mixing water consumption, the complexing capability on calcium ions in cement is improved, meanwhile, the adsorption capability of the polycarboxylic acid water reducer and cement concrete can be improved, the dispersing capability of the water reducer on the concrete is improved, and the water reducer has a good delayed coagulation effect and can be used for preparing cement concrete. The workability and flowability of cement concrete are effectively improved, the concrete structure is improved, and the strength is improved.
本发明涉及减水剂技术领域，具体涉及一种水泥混凝土用高效缓凝减水剂及其制备方法。包括以下质量份数的原料有聚乙二醇甲醚甲基丙烯酸酯80～100份、甲基丙烯酸20～30份、2‑羟基膦酰基乙酸40～70份、马来酸酐10～20份、磷酸缓释剂10～30份、引发剂2～3份、链转移剂3～5份、去离子水150～300份；本发明的减水剂具有良好的减少拌合用水量功能，对水泥中钙离子的络合能力提升，同时能够提高了聚羧酸减水剂与水泥混凝土的吸附能力，改善了减水剂对混凝土的分散能力，具有良好的缓凝效果，有效改善水泥混凝土的和易性和流动性，改善混凝土结构，提高强度。
Efficient retarding and water reducing agent for cement concrete and preparation method of efficient retarding and water reducing agent
一种水泥混凝土用高效缓凝减水剂及其制备方法
CHEN XIANGYU (author)
2022-03-25
Patent
Electronic Resource
Chinese
| European Patent Office | 2023
High-efficient polycarboxylate retarding and water reducing agent for mass concrete
| European Patent Office | 2015