人民长江2015，Vol.46Issue(17)：70-73,4.DOI:10.16232/j.cnki.1001-4179.2015.17.018
MgO混凝土自生体积变形影响因素分析
Analysis of influential factors on autogenous volume deformation of MgO concrete
摘要
Abstract
The autogenous volume deformation is one of the most important performances of MgO concrete. The influences of MgO expansion agent types and amount, cement types, aggregates types as well as the fly ash amount on autogenous volume de-formation of MgO concrete with 1400d curing age were systematically investigated. The research results indicated that the autoge-nous volume deformation tended to stable in approximately 2 years without retraction when 4% to 6% of MgO with reactivity time ranging from 50s to 200s was doped. The MgO content in cement concrete cannot accurately reflect the periclase content that gen-erates effective expansion. The autogenous volume deformation and long-term water absorption of aggregates are correlated well, namely the autogenous volume decreased with the increase of water absorption of aggregates.关键词
MgO膨胀剂/混凝土/原材料/自生体积变形Key words
MgO expansion agent/concrete/raw materials/autogenous volume deformation分类
建筑与水利引用本文复制引用
陈霞,杨华全,张建峰,严建军..MgO混凝土自生体积变形影响因素分析[J].人民长江,2015,46(17):70-73,4.基金项目
国家自然科学基金(51209022,5139001) （51209022,5139001）
中央级公益性科研院所基本科研业务费(CKSF2015030/CL) （CKSF2015030/CL）
