夏季施工缓凝剂对大掺量矿物掺合料混凝土影响研究

大掺量矿物掺合料混凝土中,掺加高效减水剂,复合不同品种、不同掺量的缓凝剂,研究其对混凝土和易性、凝结时间、不同龄期强度的影响.试验表明:掺加不同品种、一定掺量的缓凝剂,可改善混凝土的和易性,延长混凝土的凝结时间,提高混凝土后期强度.

Effect of retarder upon high volume mineral admixture concrete in summer construction

The concrete with high volume mineral admixture,adding superplasticizer,composite of different species and different content of the retarder,is studied on the workability,setting time,different age strength of concrete.Tests show that adding different species and fixed content of the retarder can improve the workability of concrete,extend the setting time of concrete,increase the late age strength of concrete.