激发剂对天然硬石膏的改性研究  

Research on modification of activator on natural anhydrite

作　　者：唐玉超[1] 赵青林[1] 陈礼庚[1] 周明凯[1] 

机构地区：[1]武汉理工大学材料学院,硅酸盐材料工程教育部重点实验室,湖北武汉430070

出　　处：《新型建筑材料》2011年第4期5-7,11,共4页New Building Materials

摘　　要：通过测定凝结时间和不同龄期绝干抗折、抗压强度,分析研究盐类和碱性激发剂对天然硬石膏的改性效果,对比优选出硫酸钠作为合适单一激发剂。在自制激发剂基础上通过与硫酸钠复配,最终获得掺量小、效果好,对硬石膏制品副作用小的高效复合激发剂。研究结果表明,在合适激发剂的激活下能够获得凝结硬化快,7 d抗折、抗压强度分别达9.00 MPa、30.0 MPa的天然硬石膏建筑胶凝材料。Through the determination of setting time and absolute dry flexural, compressive strength on different ages,analysis and research of salts and alkaline activators on modification of natural anhydrite have been done. So sodium sulfate is a proper single activator by contrast and optimization in all ones. On the basis of home-made activator, small dosage,favorable effect efficient activating agent is obtained by mixed with sodium sulfate. And there are little negative effects of efficient activating agent on anhydrite products. The results show that by the activation of a suitable activator, the cementitious building materials of natural anhydrite such obtained can be fast hardened and the 7 day flexural, compressive strength respectively up to 9.00 MPa and 30.0 MPa.

关 键 词：天然硬石膏 单一激发剂 复合激发剂 激发 

分 类 号：TQ177.311[化学工程—硅酸盐工业]