Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Anti-mud viscosity-reducing polycarboxylate superplasticizer and preparation method thereof
The invention relates to the technical field of concrete admixtures, in particular to an anti-mud viscosity-reducing polycarboxylate superplasticizer and a preparation method thereof. The polycarboxylate superplasticizer is prepared by copolymerizing unsaturated polyether B, unsaturated acid, a crosslinking monomer and an esterification product; the esterification product is obtained by carrying out esterification reaction on gallic acid and unsaturated polyether A. The anti-mud viscosity-reducing polycarboxylate superplasticizer is a cement dispersion polymer capable of reducing the viscosity of high-grade concrete, can improve the anti-mud effect, can effectively reduce the viscosity of the high-grade concrete, is beneficial to pumping of high-strength concrete, ultrahigh-strength concrete, UHPC (Ultra High Performance Concrete) and the like, realizes pumping construction of the high-strength concrete, the concrete construction efficiency is effectively improved, meanwhile, the slump retaining performance of the concrete can be improved, and the slump loss in the pumping process is reduced.
本发明涉及混凝土外加剂技术领域，特别涉及一种抗泥降粘型聚羧酸减水剂及其制备方法。该聚羧酸减水剂由不饱和聚醚B、不饱和酸、交联单体和酯化产物共聚制得；所述酯化产物由没食子酸与不饱和聚醚A经酯化反应得到。该抗泥降粘型聚羧酸减水剂是一种可降低高标号混凝土粘度的水泥分散聚合物，其能够提升抗泥效果，且可有效降低高标号混凝土粘度，利于高强混凝土、超高强混凝土、UHPC混凝土等的泵送，实现高强混凝土的泵送施工，有效提高混凝土施工效率，同时能够提高混凝土的保坍性能，减小在泵送过程中的坍落度损失。
Anti-mud viscosity-reducing polycarboxylate superplasticizer and preparation method thereof
The invention relates to the technical field of concrete admixtures, in particular to an anti-mud viscosity-reducing polycarboxylate superplasticizer and a preparation method thereof. The polycarboxylate superplasticizer is prepared by copolymerizing unsaturated polyether B, unsaturated acid, a crosslinking monomer and an esterification product; the esterification product is obtained by carrying out esterification reaction on gallic acid and unsaturated polyether A. The anti-mud viscosity-reducing polycarboxylate superplasticizer is a cement dispersion polymer capable of reducing the viscosity of high-grade concrete, can improve the anti-mud effect, can effectively reduce the viscosity of the high-grade concrete, is beneficial to pumping of high-strength concrete, ultrahigh-strength concrete, UHPC (Ultra High Performance Concrete) and the like, realizes pumping construction of the high-strength concrete, the concrete construction efficiency is effectively improved, meanwhile, the slump retaining performance of the concrete can be improved, and the slump loss in the pumping process is reduced.
本发明涉及混凝土外加剂技术领域，特别涉及一种抗泥降粘型聚羧酸减水剂及其制备方法。该聚羧酸减水剂由不饱和聚醚B、不饱和酸、交联单体和酯化产物共聚制得；所述酯化产物由没食子酸与不饱和聚醚A经酯化反应得到。该抗泥降粘型聚羧酸减水剂是一种可降低高标号混凝土粘度的水泥分散聚合物，其能够提升抗泥效果，且可有效降低高标号混凝土粘度，利于高强混凝土、超高强混凝土、UHPC混凝土等的泵送，实现高强混凝土的泵送施工，有效提高混凝土施工效率，同时能够提高混凝土的保坍性能，减小在泵送过程中的坍落度损失。
Anti-mud viscosity-reducing polycarboxylate superplasticizer and preparation method thereof
一种抗泥降粘型聚羧酸减水剂及其制备方法
KE YULIANG (Autor:in) / AN XIAOQIANG (Autor:in) / HE CHONG (Autor:in) / LIU BOBO (Autor:in) / YANG YINGGANG (Autor:in)
25.02.2022
Patent
Elektronische Ressource
Chinesisch
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