王 倩1,王立彬1,任建波1,张露瑶1,张业明2,刘禹杉1,肖见祺1
摘 要:以丙烯酸羟乙酯、丙烯酸羟丙酯、封端酰胺磷酸酯和甲基丙烯基酒石酸单酯为功能单体,通过对这几种功能单体缓释特点进行分类,科学地设计了聚羧酸减水剂的分子结构,制备了三种不同释放时间的保坍型聚羧酸高性能减水剂(即早期释放型、中期释放型和中后期释放型)。采用凝胶色谱仪对三种保坍型减水剂进行了GPC分析,研究了其释放规律以及对不同特征水泥的适应性,并在混凝土实际工程中验证了设计方法的正确性。
Abstract: With hydroxyl ethyl acrylate, hydroxypropyl acrylate, terminated amide phosphate and methyl allyl tartaric acid monoester for modification monomer, through the analysis of the characteristics of the several kinds of modified monomer slow-release classification, the molecular structure of high performance polycarboxylate superplasticizer was scientifically designed. Three different release times of high performance slump retention type polycarboxylate superplasticizer(release early, release mid and later released type) were prepared. GPC analysis was carried out on three kinds of high performance slump retention type polycarboxylate superplasticizer by gel chromatography. Its release rules and adaptability to different characteristics of the cement were studied and applied in concrete engineering practice to verify the correctness of the design method.
王倩,王立彬,任建波,等.不同释放时间保坍型聚羧酸高性能减水剂研究[J].混凝土与水泥制品,2020(11):20-25.
WANG Q,WANG L B,REN J B,et al.Study on High Performance Slump Retention Type Polycarboxylate Superplasticizer with Different Release Time[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(11):20-25.
不同释放时间保坍型聚羧酸高性能减水剂研究
王 倩1,王立彬1,任建波1,张露瑶1,张业明2,刘禹杉1,肖见祺1
摘 要:以丙烯酸羟乙酯、丙烯酸羟丙酯、封端酰胺磷酸酯和甲基丙烯基酒石酸单酯为功能单体,通过对这几种功能单体缓释特点进行分类,科学地设计了聚羧酸减水剂的分子结构,制备了三种不同释放时间的保坍型聚羧酸高性能减水剂(即早期释放型、中期释放型和中后期释放型)。采用凝胶色谱仪对三种保坍型减水剂进行了GPC分析,研究了其释放规律以及对不同特征水泥的适应性,并在混凝土实际工程中验证了设计方法的正确性。
Abstract: With hydroxyl ethyl acrylate, hydroxypropyl acrylate, terminated amide phosphate and methyl allyl tartaric acid monoester for modification monomer, through the analysis of the characteristics of the several kinds of modified monomer slow-release classification, the molecular structure of high performance polycarboxylate superplasticizer was scientifically designed. Three different release times of high performance slump retention type polycarboxylate superplasticizer(release early, release mid and later released type) were prepared. GPC analysis was carried out on three kinds of high performance slump retention type polycarboxylate superplasticizer by gel chromatography. Its release rules and adaptability to different characteristics of the cement were studied and applied in concrete engineering practice to verify the correctness of the design method.
王倩,王立彬,任建波,等.不同释放时间保坍型聚羧酸高性能减水剂研究[J].混凝土与水泥制品,2020(11):20-25.
WANG Q,WANG L B,REN J B,et al.Study on High Performance Slump Retention Type Polycarboxylate Superplasticizer with Different Release Time[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(11):20-25.
摘 要:以丙烯酸羟乙酯、丙烯酸羟丙酯、封端酰胺磷酸酯和甲基丙烯基酒石酸单酯为功能单体,通过对这几种功能单体缓释特点进行分类,科学地设计了聚羧酸减水剂的分子结构,制备了三种不同释放时间的保坍型聚羧酸高性能减水剂(即早期释放型、中期释放型和中后期释放型)。采用凝胶色谱仪对三种保坍型减水剂进行了GPC分析,研究了其释放规律以及对不同特征水泥的适应性,并在混凝土实际工程中验证了设计方法的正确性。
Abstract: With hydroxyl ethyl acrylate, hydroxypropyl acrylate, terminated amide phosphate and methyl allyl tartaric acid monoester for modification monomer, through the analysis of the characteristics of the several kinds of modified monomer slow-release classification, the molecular structure of high performance polycarboxylate superplasticizer was scientifically designed. Three different release times of high performance slump retention type polycarboxylate superplasticizer(release early, release mid and later released type) were prepared. GPC analysis was carried out on three kinds of high performance slump retention type polycarboxylate superplasticizer by gel chromatography. Its release rules and adaptability to different characteristics of the cement were studied and applied in concrete engineering practice to verify the correctness of the design method.
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