磷石膏中可溶性磷对硅酸盐水泥性能的影响  

Effect of soluble phosphorus in phosphogypsum on properties of Portland cement

作　　者：谭树成 唐华 徐迅[2] 敬翰 吴鑫 Tan Shucheng;Tang Hua;Xu Xun;Jing Han;Wu Xin(SichuanShuyu Petroleum Construction and Installation Engineering Co.,Ltd.,Sichuan,610080,China)

机构地区：[1]四川蜀渝石油建筑安装工程有限责任公司,四川成都610080 [2]西南科技大学,四川绵阳621010

出　　处：《水泥工程》2023年第1期11-14,共4页Cement Engineering

摘　　要：本文通过向磷石膏中外掺可溶性磷,研究了可溶性磷含量对硅酸盐水泥与外加剂相容性及其强度的影响。研究结果表明,磷石膏中可溶性磷的含量影响着水泥与外加剂的相容性,外掺H_(3)PO_(4)、H_(2)PO_(4)^(-)、HPO_(4)^(2-)时,随其掺量的增加,硅酸盐水泥与外加剂的相容性逐渐变差。相对于天然石膏而言,磷石膏中可溶性磷的含量仅引起硅酸盐水泥早期强度有所降低。In this paper,the influence of soluble phosphorus content on the compatibility and strength of Portland cement and admixture was studied by adding soluble phosphorus into phosphogypsum.The research results show that the content of soluble phosphorus in phosphogypsum affects the compatibility of cement and admixture.When H_(3)PO_(4),H_(2)PO_(4)^(-) and HPO_(4)^(2-) are added,the compatibility of Portland cement and admixture becomes worse with the increase of its content.Compared with natural gypsum,the content of soluble phosphorus in phosphogypsum only causes the early strength of Portland cement to decrease.

关 键 词：磷石膏 可溶性磷 水泥性能 相容性 

分 类 号：TQ172.6[化学工程—水泥工业]