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A platform for research: civil engineering, architecture and urbanism
Concrete admixture and preparation process thereof
The invention discloses a concrete admixture and a preparation process thereof, and relates to the technical field of concrete admixtures. The concrete admixture comprises the following raw material components: 60-80 parts of a base water reducer solution, 5-8 parts of a constant coagulant, 4-7 parts of an adsorbent, 2-6 parts of an anti-foaming agent and 5-20 parts of a regulator, the substrate water reducing agent solution is prepared from the following component raw materials: 60-80 parts of methacrylic acid, 10-35 parts of water, 4-8 parts of a cross-linking agent, 3-7 parts of dibenzoyl peroxide, 3-6 parts of epoxypropane and 3-6 parts of carboxylic acid small monomers. The cross-linking agent and dibenzoyl peroxide are added to perform cross-linking reaction with methacrylic acid, the polymerization degree of a molecular chain of the water reducer is adjusted, a three-dimensional network structure is generated, the chain length of the admixture is prolonged through reaction with propylene oxide and carboxylic acid monomers, the stability of the concrete admixture is improved, and the concrete admixture has good water resistance. The dispersion effect on concrete particles is improved, the water-reducing rate is increased, the subsequent bleeding rate is reduced, and the strength of concrete is further improved.
本发明公开了一种混凝土外加剂及其制备工艺，涉及混凝土外加剂技术领域其原料包括以下组分：基底减水剂溶液60—80份、恒凝剂5—8份、吸附剂4—7份、抗泡剂2—6份，调节剂5—20份，所述基底减水剂溶液包括以下组分原料制成：甲基丙烯酸60—80份、水10—35份、交联剂4—8份、过氧化二苯甲酰3—7份、环氧丙烷3—6份、羧酸小单体3—6份。本发明通过加入交联剂和过氧化二苯甲酰与甲基丙烯酸进行交联反应，调节减水剂分子链的聚合程度，生成三维网状结构，通过与环氧丙烷和羧酸单体反应，延长外加剂链长，有利于提高混凝土外加剂的稳定性，并且提高对混凝土颗粒的分散效果，提高减水率和降低后续泌水率，进一步提高混凝土的强度。
Concrete admixture and preparation process thereof
The invention discloses a concrete admixture and a preparation process thereof, and relates to the technical field of concrete admixtures. The concrete admixture comprises the following raw material components: 60-80 parts of a base water reducer solution, 5-8 parts of a constant coagulant, 4-7 parts of an adsorbent, 2-6 parts of an anti-foaming agent and 5-20 parts of a regulator, the substrate water reducing agent solution is prepared from the following component raw materials: 60-80 parts of methacrylic acid, 10-35 parts of water, 4-8 parts of a cross-linking agent, 3-7 parts of dibenzoyl peroxide, 3-6 parts of epoxypropane and 3-6 parts of carboxylic acid small monomers. The cross-linking agent and dibenzoyl peroxide are added to perform cross-linking reaction with methacrylic acid, the polymerization degree of a molecular chain of the water reducer is adjusted, a three-dimensional network structure is generated, the chain length of the admixture is prolonged through reaction with propylene oxide and carboxylic acid monomers, the stability of the concrete admixture is improved, and the concrete admixture has good water resistance. The dispersion effect on concrete particles is improved, the water-reducing rate is increased, the subsequent bleeding rate is reduced, and the strength of concrete is further improved.
本发明公开了一种混凝土外加剂及其制备工艺，涉及混凝土外加剂技术领域其原料包括以下组分：基底减水剂溶液60—80份、恒凝剂5—8份、吸附剂4—7份、抗泡剂2—6份，调节剂5—20份，所述基底减水剂溶液包括以下组分原料制成：甲基丙烯酸60—80份、水10—35份、交联剂4—8份、过氧化二苯甲酰3—7份、环氧丙烷3—6份、羧酸小单体3—6份。本发明通过加入交联剂和过氧化二苯甲酰与甲基丙烯酸进行交联反应，调节减水剂分子链的聚合程度，生成三维网状结构，通过与环氧丙烷和羧酸单体反应，延长外加剂链长，有利于提高混凝土外加剂的稳定性，并且提高对混凝土颗粒的分散效果，提高减水率和降低后续泌水率，进一步提高混凝土的强度。
Concrete admixture and preparation process thereof
一种混凝土外加剂及其制备工艺
HUANG QINGLIN (author) / CHEN XING (author) / HUANG ZHIFENG (author) / CHEN WEIJING (author)
2024-03-19
Patent
Electronic Resource
Chinese
Concrete admixture, preparation method thereof and concrete added with concrete admixture
| European Patent Office | 2020