高P钢渣微粉缓凝机理研究  

Study on retarder mechanism of high P steel slag powder

作　　者：柳东[1] 刘福田[1] 张德成[1] 赵德利[1] 张波[1] 

机构地区：[1]济南大学材料科学与工程学院,山东济南250022

出　　处：《水泥工程》2014年第6期62-65,69,共5页Cement Engineering

摘　　要：试验分析了莱钢钢渣微粉和山东某钢厂高P钢渣微粉的特性,莱钢钢渣中C3S、C2S等活性矿物含量多于高P钢渣,且P含量少于高P钢渣。在此基础上,进行了高P钢渣和莱钢钢渣对钢渣微粉—水泥胶凝材料凝结时间和1d强度的影响试验;重点分析了高P钢渣影响水泥凝结时间和1d强度的原因和机理,即高P钢渣中的可溶性P在硅酸盐水泥早期水化过程中,会随着钢渣中玻璃体的解聚溶出,与钙离子结合生成羟基磷灰石,附着于活性矿物表面,阻碍硅酸盐水泥中C3A、C3S、C2S等活性矿物的正常水化进程。The characteristics of Laiwu steel slag and high P steel slag were analysed in this experiment as the activity mineral content of Laiwu steel slag is higher than that of high P steel slag, and the P content is less. On that basis, carried out the experiment of impacts of Laiwu steel slag and high P steel slag oil ld compressive strength and setting time of steel slag-cement cementing material, and anal- ysed the mechanisms ;n early hydration process, soluble P in high P steel slag may dissolve with vitreous body depolymerizing and combine to Ca2＋ to form hydroxyapatite which is attached to the surface of active mineral to obstacle their normal hydration of C3A,C3S, C2S etc.

关 键 词：钢渣 高P钢渣 缓凝机理 可溶性磷 玻璃体 羟基磷灰石 强度 

分 类 号：TQ172.1[化学工程—水泥工业]