摘要
研究了粉煤灰混凝土的水渗透系数、渗透率和空气渗透系数。分析了水渗透系数试验的稳定规律,各渗透性能指标与混凝土配合比参数的关系,以及3类试验结果的相关性。结果表明,水渗透系数测试稳定时间至少为2周;3类渗透试验结果均与养护龄期呈幂次关系,与水胶比呈线性关系;将水渗透系数转化为本征渗透系数后,与渗透率、空气渗透系数线性相关;空气渗透系数为本征渗透系数的10倍左右。
The water permeability coefficient, percolation rate and the water permeability were studied in this work. The rule of approaching the stable state of the water percolation experiment was analyzed. The relationships between the indices and the parameters of concrete and the relationship between these 3 test results were revealed. The results indicated that, the test of water permeability coefficient would not be stable until at least 2 weeks after initiation. There were exponential relationships between the 3 permeability indices and curing time, and linear relationships between them and water binder ratio. The intrinsic permeability coefficient, transformed from water permeability coefficient, showed linear relationship with the percolation rate and the air permeability coefficient, which is about 10 times of the intrinsic permeability coefficient.
出处
《低温建筑技术》
2017年第3期4-7,共4页
Low Temperature Architecture Technology
基金
中央级公益性科研院所基本科研业务费专项基金(Y415001)
关键词
水渗透系数
本征渗透系数
空气渗透
相关性
water permeability coefficient
intrinsic permeability coefficient
percolation rate
air percolation
correlation
