无机胶凝体系对水泥基饰面砂浆性能影响的研究

关键字：饰面砂浆,无水石膏,β-半水石膏,泛碱

[瓦克化学（中国）有限公司，上海  200233]

    摘要：研究了不同掺量的无水石膏和β-半水石膏在不同胶凝材料用量下，对饰面砂浆力学性能、吸水量和抗泛碱的影响。结果表明：石膏掺量较低时，砂浆的抗折和抗压强度较高、吸水量较低、抗泛碱效果较好，但拉伸强度较低；同等掺量时，掺加无水石膏的砂浆抗折和抗压强度较高。
    关键词：饰面砂浆；无水石膏；β-半水石膏；泛碱
    中图分类号：TU564；TQ177.6        文献标识码：A        文章编号：1001-702X（2017）04-0009-04

Study on influence of inorganic binder system on performance of cement based decorative mortar
PAN Wei，DUAN Yufang
[Wacker Chemicals（China） Co. Ltd.，Shanghai 200233，China]

    Abstract：In the paper，under different binders' content，the influence of different dosage of anhydrite and β-hemihydrate on mechanical performance，water adsorption amount and anti-efflorescence are studied. The test results show that，with lower gypsum dosage，the flexural and compressive strength of mortar was high，water adsorption amount was low，and anti-efflorescence effect was good，while the tensile adhesive strength was lower；on the same dosage，flexural and compressive strength of mortar with anhydrite addition was higher.
    Key words：decorative mortar，anhydrite，β-hemihydrate，efflorescence