摘要
依托肯尼亚蒙内标轨铁路工程,试验分析了砂岩机制砂石粉含量对中等强度等级混凝土力学性能、体积稳定性及抗氯离子渗透性的影响。研究表明,当机制砂中石粉含量处于一定范围时,石粉对机制砂混凝土的力学性能和抗氯离子渗透性具有提高效果。对C35及C45强度等级机制砂混凝土,当石粉含量分别不超过9%和8%时,28d龄期后的机制砂混凝土干燥收缩与普通河砂混凝土并无显著差异。
Based on Mombasa-Nairobi Standard Gauge Railway Project of Kenya,The influention of sandstone powder content on volume stability,mechanical properties and resistance to chloride ion permeability for medium strength grade of concrete were analyzed by test.Stone powder had improved effect on mechanical properties and resistance to chloride permeability when stone powder content in a certain range.Compared with river sand concrete,it had no significant difference on drying shrinkage for C35 and C45 concrete after 28 days when stone powder content less than 9% and 8%respectively.
出处
《建筑结构》
CSCD
北大核心
2017年第S1期950-953,共4页
Building Structure
关键词
砂岩石粉
机制砂混凝土
力学性能
干燥收缩
抗氯离子侵蚀
sandstone powder
manufactured sand concrete
mechanical property
drying shrinkage
chloride penetration resistance
