碳酸化钢渣和矿渣作硅酸盐水泥混合材水化性能研究  

Study on hydration characteristics of carbonated steel slag and slag as Portland cement admixtures

作　　者：梁晓杰[1] 叶正茂[1] 常钧[1,2] 

机构地区：[1]济南大学材料科学与工程学院山东省建筑材料制备与测试技术重点实验室,山东济南250022 [2]大连理工大学土木工程学院建筑材料研究所,辽宁大连116024

出　　处：《功能材料》2012年第12期1540-1544,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51172096);国家重点基础研究发展计划(973计划)预研资助项目(2010CB635117);教育部留学回国人员科研启动基金资助项目

摘　　要：通过对钢渣碳酸化前后的硅酸盐相提取及水化放热性能和将碳酸化钢渣和矿渣作为混合材的硅酸盐水泥的胶砂强度和水化产物种类的测定,以及对它们微观形貌的观察,研究了碳酸化钢渣对胶凝体系水化性能的影响。结果表明,碳酸化使钢渣中硅酸盐相的含量由47.06%下降至14.38%;碳酸化促进了钢渣的早期水化,抑制其后期水化;在配比相同的条件下,碳酸化钢渣-矿渣-硅酸盐熟料体系试样的3、28d抗压强度较未碳酸化钢渣-矿渣-硅酸盐熟料体系试样的高;碳酸化生成的CaCO3促进了熟料的水化;碳酸化钢渣促进了胶凝体系中AFt的生成,且生成水合碳铝酸钙。The effect of carbonated steel slag on hydration characteristics of cementitious system was studied by the determination of silicate phase content changes and hydration heat evolution of before and after carbonation products of steel slag,mortar strength,type of hydration products as well as micromorphology of mortar.The results show that carbonation reduces the silicate phase content of steel slag from 47.06% to 14.38%;carbonation promots the early hydration of steel slag,but inhibits its further hydration;at the same of ratio,3,28d compressive strength of carbonated steel slag and slag cement are higher than that of uncarbonated steel slag and salg cement;CaCO3 generated by carbonation promotes the hydration of clinker;carbonated steel slag promotes the generation of AFt in cementitious system,and generates calcium carboaluminate hydrate.

关 键 词：碳酸化钢渣 矿渣 硅酸盐熟料 水化热 水化产物 水合碳铝酸钙 

分 类 号：TQ172.1[化学工程—水泥工业]