一种新型聚羧酸基粉状高效减水剂的性能研究

K. Tsukada, M. Ishimori, M. Kinoshita
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引用次数: 4

摘要

粉状高效减水剂已广泛应用于水泥基预混料,如灌浆和修补材料。以萘和三聚氰胺为基础的粉状高效减水剂已被用于预混产品。传统的粉状高效减水剂在低温范围内不能提供足够的流动性,存在一些问题。近年来,聚羧酸基液体减水剂已被用于生产高强混凝土和高流动性混凝土。聚羧酸基高效减水剂不含甲醛,是一种健康安全的材料,其应用前景广阔。然而,由于这种高效减水剂的高缓凝性能,在水泥基预混制品中的应用很少。因此,通过对聚羧酸酯共聚物化学结构的优化,本项目开发了一种新型聚羧酸酯基预混产品粉状高效减水剂(PSP3)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Performance of an Advanced Polycarboxylate-Based Powder Superplasticizer
Powder superplasticizers have been widely used for cement-based premixed-products, such as grout and repair materials. Naphthalene and melamine-based powder superplasticizers have been used for premixed-products. There are some problems wherein sufficient fluidity cannot be provided at low temperature range, when those conventional powder superplasticizers are used. In recent years, polycarboxylate-based liquid superplasticizer has been used for the purpose of producing high-strength concrete and high-fluidity concrete. Polycarboxylate-based superplasticizer is a safe material for health reasons since it contains no formaldehyde and its application is expected to expand in the future. However, a high retarding property of this type of superplasticizer has caused a rare application in cement-based premixed-products. Therefore, with optimization of the chemical structure of polycarboxylate copolymer, the project has developed a novel polycarboxylate-based powder superplasticizer (PSP3) for premixed products.
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