Firstly, adjusting tests are carried out according to the construction requirements for RCC retarding time in different seasons and a super retarding compound additive suitable for different season and temperature conditions is developed.

• 首先，针对不同季节混凝土凝结时间的施工要求，用碾压混凝土的缓凝时间作评价指标，对超缓凝复合外加剂进行了大量的调整试验，研究出适合不同季节、不同气温条件的超缓凝复合外加剂。