锂渣混凝土孔分形维数与气体渗透性能关系研究  

Relationship between pore fractal dimension and air permeability of lithium slag concrete

作　　者：邓雷[1] 温勇[1] 韩国旗 马丽莎[1] 王渤[1] 王晨[1] 徐炜[1] 

机构地区：[1]新疆大学建筑工程学院,新疆乌鲁木齐830047

出　　处：《混凝土》2017年第5期68-71,共4页Concrete

基　　金：国家自然科学基金(51268055)

摘　　要：利用压汞法(MIP)测试了不同锂渣掺量的C30、C60混凝土的孔结构参数,计算了被测混凝土的孔体积分形维数、孔轴线分形维数,并研究了混凝土气体渗透系数、锂渣掺量与孔体积分形维数、孔轴线分形维数之间的关系。结果表明,混凝土的气体渗透系数与孔体积分形维数相关性高;C60混凝土在锂渣掺量为10%时,孔体积分形维数和孔轴线分形维数最大;随着锂渣掺量的提高,C30混凝土孔体积分形维数和孔轴线分形维数呈降低的趋势。In this study,we attempt to recover the relationship between pore fractal dimension and air permeability of lithium slag concrete.The pore structure parameters of C30 and C60 in different lithium slag content were tested by mercury intrusion method（MIP）and the fractal dimension of pore volume and the fractal dimension of pore axis were calculated.And the relationship between gas permeability coefficient,the amount of lithium slag and the integral fractal dimension and the fractal dimension of the hole are studied.The results show that the gas permeability coefficient of concrete is highly correlated with the integral fractal dimension of the hole.For C60,the maximum pore volume dimension and the fractal dimension of the hole axis were obtained when the lithium slag content was 10%.For C30,with the addition of the lithium slag,the pore volume fractal dimension and the pore axis showed a decreasing trend.

关 键 词：锂渣混凝土 孔分形维数 气体渗透系数 

分 类 号：TU528.041[建筑科学—建筑技术科学]