氟石膏水泥与混凝土外加剂适应性研究

2.武汉理工大学，湖北 武汉  430070）

    摘要：对以氟石膏作水泥缓凝剂生产的水泥与混凝土泵送剂、减水剂等外加剂的适应性进行了研究，以凝结时间、流动度、经时损失、强度等为考察指标。研究结果表明，采用氟石膏作缓凝剂生产的水泥适应性比天然石膏生产的水泥更好，流动度经时损失更小。配制的混凝土坍落度正常，力学性能稳定，28 d抗压强度均超过设计强度25%以上。

    关键词：氟石膏；缓凝剂；混凝土外加剂；适应性

    中图分类号：TU528.042        文献标识码：A        文章编号：1001-702X（2018）05-0026-04

　　

Study on the adaptability of cement and concrete admixture in the production of fluorine gypsum

CHEN Jianwu1，YANG Xinya2，XU Songmei1

（1.Hunan Nonferrous Environmental Protection Building Material Co. Ltd.，Xiangxiang 411400，China；  

　　2.Wuhan University of Technology，Wuhan 430070，China）

   Abstract：The adaptability of cement produced by using fluorine gypsum as a cement retarder and concrete pumping agent，water reducing agent and other admixtures was studied. The setting time, fluidity，loss over time，and strength were taken as indexes. The results of the study indicate that the adaptability of cement produced with fluoro-gypsum as retarder is better than that using natural gypsum as retarder，which has a smaller loss of fluidity over time. The prepared concrete has a normal slump and stable mechanical properties. The 28-day compressive strength exceeds the design strength by more than 25%.

    Key words：fluorine gypsum，retarder，concrete admixture，adaptability