微组分对磷铝酸盐水泥耐水性的影响初探  

Study on the Effect of Little Composition on the Water Resistance Behavior of Phosphoaluminate Cement

作　　者：任书霞[1] 田秀淑[1] 李仕群[2] 

机构地区：[1]石家庄铁道学院材料科学与工程学院,河北石家庄050043 [2]济南大学材料科学与工程学院,山东济南250022

出　　处：《中国材料科技与设备》2007年第3期50-52,58,共4页Chinese Materials Science Technology & Equipment

摘　　要：以净浆力学强度及Ca”和[A1O4]^5-离子溶出浓度为耐水性评价指标，研究了微组分石膏对磷铝酸盐水泥（phosphoaluminate cement，PALC）的影响，并通过S电位、XRD和孔结构等技术分析了其耐水性机理。结果表明：在浸水过程中，掺石膏和未掺石膏的磷铝酸盐水泥硬化浆体的力学性能均在不断提高，Ca^2＋和[AIO4]^5-的溶出浓度不断减小。相比较而言，掺石膏的磷铝酸盐水泥试样在浸水早期的力学性能和离子溶出浓度较未掺的变化不大，但在长期浸水的过程中，前者力学性能明显高于后者，而Ca^2＋和EAIO4]^5-溶出浓度却显著下降，这表明在磷铝酸盐水泥中掺入石膏，对其早期耐水性影响不大，但对长期耐水性的提高是十分有利的。The water resistance behavior and its mechanism of Phosphoaluminate Cement with or without gypsum have been studied in the paper. The mechanical strength of pastes and the dissolving mass concentrations of Ca^2＋ and [AIO4]^5- of paste on were used to determine the water resistance level . The results indicate gypsum has little contribute to the water resistance behavior of Phosphoaluminate Cement in the early immersing time,but has a greater contribute to the increase the long asting water resistance of Phosphoaluminate Cement in the late immersing time.

关 键 词：磷铝酸盐水泥 耐水性 微组分 耐水机理 

分 类 号：TQ172[化学工程—水泥工业]