类矿渣粉体的制备及其碱激发性能Preparation of simulated-slag powders and the properties of their alkali-activated products
张宁;贺艳;相继春;郑浩;崔学民;
摘要(Abstract):
为了研究原料矿渣中钙含量的变化对材料的结构和碱激发性能的影响,论文采用溶胶-凝胶法合成不同钙硅比的类矿渣粉体,并对类矿渣粉体的结构及其碱激发产物的凝结时间、力学性能、收缩性能和结构进行分析。结果表明:类矿渣粉体的结构与矿渣相似,当水玻璃模数为1.2时,类矿渣粉体中钙硅比越高,凝结时间越短,抗压强度越高,收缩越小;碱激发类矿渣的主要反应产物为水化硅酸钙(C—S—H)。实验结果说明了在制备碱激发矿渣时,适当提高原材料中的钙硅比可以制备快硬早强、收缩低的碱激发材料。
关键词(KeyWords): 类矿渣粉体;溶胶-凝胶法;凝结时间;抗压强度;收缩性能
基金项目(Foundation): 国家自然科学基金资助项目(51668009);; 广西自然科学基金资助项目(2017GXNSFAA198327)
作者(Author): 张宁;贺艳;相继春;郑浩;崔学民;
Email:
DOI: 10.13624/j.cnki.issn.1001-7445.2020.1473
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