A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention relates to the technical field of concrete admixtures, in particular to a starch-based polycarboxylate superplasticizer partner and a preparation method thereof, and the starch-based polycarboxylate superplasticizer partner comprises the following materials: 20-50 parts of modified starch, 5-20 parts of polyvinyl alcohol monomethyl ether, 5-20 parts of methacrylic acid, 80-100 parts of weakly alkaline deionized water, 5-10 parts of an initiator, 10-15 parts of an esterifying agent, 10-12 parts of modified attapulgite, 5-10 parts of a defoaming agent and 10-15 parts of acetic acid. By adding the polyvinyl alcohol monomethyl ether and the methacrylic acid, the problems of sensitivity and adaptability of the polycarboxylate superplasticizer in the mixing amount are solved, the working states such as workability and cohesiveness of concrete are improved, and the working efficiency of concrete pouring and the quality of hardened concrete are improved, and the starch-based polycarboxylate superplasticizer partner has excellent adaptability to different cement, admixtures, artificial sand, environment temperature and concrete mix proportion fluctuation.
本发明涉及混凝土外加剂技术领域，尤其涉及一种淀粉基聚羧酸减水剂伴侣其制备方法，包括以下材料组成：改性淀粉20～50份、聚乙烯醇单甲醚5～20份、甲基丙烯酸5～20份、弱碱性去离子水80～100份、引发剂5～10份、酯化剂10～15份、改性凹凸棒石10～12份、消泡剂5～10份、醋酸10～15份。通过加入聚乙烯醇单甲醚与甲基丙烯酸，解决聚羧酸减水剂在掺量的敏感性、适应性问题，提高混凝土和易性、粘聚性等工作状态，有利于提升混凝土浇筑工作效率和硬化混凝土质量，对于不同的水泥、掺合料、人工砂、环境温度及混凝土配合比波动都有着优异的适应性。
The invention relates to the technical field of concrete admixtures, in particular to a starch-based polycarboxylate superplasticizer partner and a preparation method thereof, and the starch-based polycarboxylate superplasticizer partner comprises the following materials: 20-50 parts of modified starch, 5-20 parts of polyvinyl alcohol monomethyl ether, 5-20 parts of methacrylic acid, 80-100 parts of weakly alkaline deionized water, 5-10 parts of an initiator, 10-15 parts of an esterifying agent, 10-12 parts of modified attapulgite, 5-10 parts of a defoaming agent and 10-15 parts of acetic acid. By adding the polyvinyl alcohol monomethyl ether and the methacrylic acid, the problems of sensitivity and adaptability of the polycarboxylate superplasticizer in the mixing amount are solved, the working states such as workability and cohesiveness of concrete are improved, and the working efficiency of concrete pouring and the quality of hardened concrete are improved, and the starch-based polycarboxylate superplasticizer partner has excellent adaptability to different cement, admixtures, artificial sand, environment temperature and concrete mix proportion fluctuation.
本发明涉及混凝土外加剂技术领域，尤其涉及一种淀粉基聚羧酸减水剂伴侣其制备方法，包括以下材料组成：改性淀粉20～50份、聚乙烯醇单甲醚5～20份、甲基丙烯酸5～20份、弱碱性去离子水80～100份、引发剂5～10份、酯化剂10～15份、改性凹凸棒石10～12份、消泡剂5～10份、醋酸10～15份。通过加入聚乙烯醇单甲醚与甲基丙烯酸，解决聚羧酸减水剂在掺量的敏感性、适应性问题，提高混凝土和易性、粘聚性等工作状态，有利于提升混凝土浇筑工作效率和硬化混凝土质量，对于不同的水泥、掺合料、人工砂、环境温度及混凝土配合比波动都有着优异的适应性。
Starch-based polycarboxylate superplasticizer partner and preparation method thereof
一种淀粉基聚羧酸减水剂伴侣其制备方法
XIAO GANG (author)
2022-01-21
Patent
Electronic Resource
Chinese
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