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在水泥、混凝土中掺入少量外加剂能显著地改善混凝土施工性能、满足不同工程的特殊要求,这一事实已引起人们的重视。近十年来,高效能减水剂品种日益增多,使用日趋广泛。但对高效能减水剂(本文中主要指萘系高效能减水剂)分散作用的研究还很不够,对衡量其品质、性能的指标,我国目前也无统一规定。大量试验表明,高效能减水剂水溶液的表面张力对高效能减水剂的萘核数、扩散性、发泡、消泡性以及对掺有这种减水剂的水泥
Adding a small amount of additive in cement and concrete can significantly improve the performance of concrete construction and meet the special requirements of different projects. This fact has attracted people’s attention. In the past ten years, there has been an increase in the use of high-efficiency water-reducing agents and their use has become increasingly widespread. However, the study on the dispersing effect of high-efficiency water-reducing agent (mainly referred to as naphthalene-based high-performance water-reducing agent in this article) is not enough. There are no uniform regulations for China to measure its quality and performance indicators. A large number of tests have shown that the surface tension of high-performance water-reducing agent aqueous solution for naphthalene nucleation, diffusion, foaming, defoaming properties of high-efficiency water-reducing agent, and cement mixed with this water-reducing agent