钛石膏作缓凝剂对水泥净浆流动度影响的研究  

Study on effect of titanium gypsum as retarder on fluidity of cement paste

作　　者：张宾 张玉玲 陈博文 ZHANG Bin(China resources cement technology research and development CO.LTD.,Guangzhou 510460,Guangdong,China)

机构地区：[1]华润水泥技术研发有限公司,广东广州510460

出　　处：《水泥》2020年第8期1-5,共5页Cement

摘　　要：本文重点研究了钛石膏对M32.5、P·C42.5、P·O42.5及P·Ⅱ42.5水泥净浆流动度的影响。结果表明,钛石膏完全取代脱硫石膏作水泥缓凝剂时,对M32.5和P·C42.5水泥净浆流动度的影响不大。当混合材粉煤灰与硫铁渣的掺量比为3∶5时,钛石膏做缓凝剂使得P·O42.5水泥的净浆流动度降低约10 mm,而当掺量比为5∶3和1∶1时,混合材改善了钛石膏对P·O42.5水泥的净浆流动度的负面影响。对于P·Ⅱ42.5水泥,钛石膏替代脱硫石膏导致净浆流动度降低25 mm。This paper focused on the infuence of titanium gypsum on the fluidity of M32.5,P·C42.5,P·O42.5 and P.Ⅱ 42.5 cement pastes.The results showed that when titanium gy psum completely replaces desulfurized gypsum as cement retarder,it has ltte infuence on the fuidity of M32.5 and P-C42.5 cement pastes.When the mass ratio of fly ash to pyrite slag was 3:5,and add titanium gypsum as retarder,the fluidity of P.O42.5 cement paste decreased 10 mm.However,the negative effects of titanium gypsum to the fluidity of P.042.5 cement paste were improved when the mass ratio of fy ash to pyrite slag were 5:3 and 1:1.For the P.Ⅱ 42.5 cement,owing to desulfurized gypsum completely replaced by titanium gypsum,the fuidity of cement paste decreased by 25 mm.

关 键 词：钛石膏 水泥缓凝剂 混合材 净浆流动度 

分 类 号：TQ172.462[化学工程—水泥工业]