Fe（OH）3对石膏增强剂提高钛石膏力学性能的影响  

Effect of Fe（OH）3 on the Mechanical Properties of Titanium Gypsum by Gypsum Enhancer

作　　者：杨贺 陈伟 Yang He;Chen Wei(School of Civil Engineering and Environment,Xihua University,Chengdu 610039,Sichuan,China;School of Civil and Architectural Engineering,Panzhihua University,Panzhihua 617000,Sichuan,China;Key Laboratory of Comprehensive Development and Utilization of Industrial Solid Wastes in Sichuan Province,Panzhihua 617000,Sichuan,China)

机构地区：[1]西华大学土木建筑与环境学院,四川成都610039 [2]攀枝花学院土木与建筑工程学院,四川攀枝花617000 [3]四川省工业固态废弃物土木工程综合开发利用重点实验室,四川攀枝花617000

出　　处：《钢铁钒钛》2019年第5期78-83,共6页Iron Steel Vanadium Titanium

基　　金：四川省高等学校重点实验室项目(SC-FQWLY-2019-Z-01工业固态废弃物土木工程综合开发利用);西华大学研究生创新基金(ycjj2018116)

摘　　要：以钛石膏为主要原料,Fe(OH)3和石膏增强剂(主要成分为聚羧酸醚)为变量,结合XRD、SEM分析,研究Fe(OH)3对石膏增强剂提高钛石膏力学性能的影响。试验结果表明:随着钛石膏中Fe(OH)3含量增加,石膏增强剂提高钛石膏力学性能的效果显著降低。用不含Fe(OH)3的脱硫石膏替换部分钛石膏,随着石膏增强剂掺量的增加钛石膏力学性能显著提高。石膏增强剂的适宜掺量为0.07%~0.11%。当掺量为0.09%时,钛石膏2 h抗折、抗压强度比没添加增强剂的钛石膏提高18%、25%,达到《建筑石膏》(GB/T 9776—2008)1.6等级。In this paper the effect of Fe(OH)3 on the improvement of mechanical properties of titanium gypsum through addition gypsum enhancer had been investigated.The experimental results indicate that the effect of gypsum enhancer on improving the mechanical properties of titanium gypsum is significantly reduced with the increasing ratio of Fe(OH)3.Hence,in order to reduce Fe(OH)3 content,part of titanium gypsum is replaced with relatively pure desulfurized gypsum without Fe(OH)3.It is seen that the mechanical properties of titanium gypsum are improved greatly with the increasing ratio of the new gypsum enhancer.The optimized gypsum enhancer content ranges 0.07%~0.11%.When the gypsum enhancer content reached 0.09%,the flexural strength and compressive strength of titanium gypsum after 2 h curing will increase 18% and 25% respectively,compared with those of without addition of gypsum enhancer.These strength meet the requirements for grade 1.6 of“Building Gypsum”(GB/T 9776—2008).

关 键 词：钛石膏 石膏增强剂 Fe(OH)3 力学性能 

分 类 号：X756[环境科学与工程—环境工程] TQ177.3[化学工程—硅酸盐工业]