摘要
通过正交优化设计试验,采用电通量法来评价煤矸石粗集料混凝土抗氯离子渗透性能。试验结果表明:水胶比对煤矸石粗集料混凝土的抗氯离子渗透性能的影响较为显著,砂率和集灰比的影响较大,煤矸石集料级配影响较小。制备最佳抗氯离子渗透性能的煤矸石粗集料混凝土的组合为A2B3C2D3,即水胶比0.39,砂率为43%,集灰比为4.2,集料级配为1.2,此时煤矸石粗集料混凝土的6 h电通量为985.36 C,具有较强的抗氯离子渗透能力。
In the experiment, resistance to chloride ion permeability of the coal gangne aggregate concrete is evaluated by electric flux method, through optimizing the design of orthogonal test.The experimental study shows that：the influence of water cement ratio on the chloride ion permeability of coal gangne aggregate concrete is remarkable,the influence of sand ratio and aggregate cement ratio is big,the influence of coal gangue aggregate graduation is small ,A2B3C2D3 is the best sample which can resistance to chloride ion permeability, the water cement ratio is 0.39, sand ratio is 43%, aggregate cement ratio is 4.2, aggregate graduation is 1.2, at this time the electric flux of 6 hour is 985.36 C, with the strong resistance to chloride ion penetration ability.
出处
《混凝土》
CAS
北大核心
2016年第8期36-38,共3页
Concrete
基金
"十二五"国家科技支撑计划课题(2012BAJ17B01)
固废资源化利用与节能建材国家重点实验室开放课题(SWR-2014-003)
关键词
煤矸石
混凝土
粗集料
氯离子渗透性
coal gangue
concrete
coarse aggregate
resistance to chloride ion
