改善石灰石硅酸盐水泥耐腐蚀性能的研究  

Study on improving the corrosion resistant property of Portland limestone cement

作　　者：张永娟[1] 张雄[1] 

机构地区：[1]同济大学混凝土材料国家重点实验室,上海200092

出　　处：《水泥》2002年第10期8-10,共3页Cement

摘　　要：探讨了在一定浓度的MgSO4溶液中、一定温度环境下石灰石硅酸盐水泥受侵过程。采用矿渣微粉部分替代石灰石微粉或水泥可以延迟或阻止侵蚀反应。对水泥石定期目测观察,并对某些样品进行XRD和DSC分析,证实侵蚀产物为水化碳硫硅酸钙,Ca(OH)2参与了侵蚀反应;揭示了矿渣微粉提高石灰石硅酸盐水泥耐硫酸盐溶液侵蚀的机理。The corrosion of Portland lime stone cement pastes in the certain MgSO 4 solution at certain room temperatur e was stud-ied.The corrosion can be re sisted or delayed by partial replacing limestone powder or cement with fine powd er of slag.The pastes were visually inspected periodically.Some samples were e xamined by X-ray diffraction and DSC,so the corrosion resis-tant mechanism o f Portland limeston e cement by addition of fine powder of slag was revealed by the fact that Portalandite was a reactant rather than a product durin g the for mation of thaumasite.

关 键 词：石灰石 硅酸盐水泥 水化 碳硫硅酸钙 矿渣微粉 

分 类 号：TQ172.71[化学工程—水泥工业]