广东水利水电Issue(9)：30-36,7.
矿渣对高镁水泥硬化浆体膨胀特性及微观结构的影响
Effects of Slag on the Expansion Characteristic and Microstructure of Hardened Cement Past with High MgO Content
摘要
Abstract
MgO could be used to compensate the shrinkage of mass concrete, and cement with high MgO content has been applied in dam concrete. In this paper, cement with 10% MgO was prepared, the effects of the dosage and the fineness of slag on the expansion characteristics of hardened cement pastes were studied, and the pore structure and microstructure of hardened cement pastes were characterized. The results indicated that the expansion rate of hardened cement paste decreased with the addition of slag. The expansion rate of hardened cement paste decreased with the increase of slag and the decrease of fly ash fineness. The expansion rate decreased significantly when the median diameter of slag was 4. 81μm. The decrease of the expansion rate depended on the “physical dilution effect”, “secondary hydrate reaction” of slag. The pore size reduced with the addition of slag, which resulting in the decrease of the expansion rate.关键词
矿渣/高镁水泥/膨胀特性/微观结构Key words
Slag/Cement with high MgO/Expansion characteristic/Microstructure引用本文复制引用
李兆恒,陈晓文,张君禄,杨永民,汤跃,侯维红..矿渣对高镁水泥硬化浆体膨胀特性及微观结构的影响[J].广东水利水电,2016,(9):30-36,7.基金项目
广东省水利科技创新项目(2015-10) （2015-10）
中国博士后科学基金(2016M590776)。 （2016M590776）
