摘要
采用压汞法对含不同掺合料混凝土的孔分形结构进行了试验研究,测定了其孔体积分形维数,探讨了含不同掺合料混凝土的孔体积分形维数与氯离子渗透性能及强度的关系。结果表明:混凝土孔体积分形维数越大氯离子渗透系数越大;含不同掺合料混凝土的孔体积分形维数与氯离子渗透系数相关性由高到低依次为:粉煤灰>矿渣>石灰石>水泥;含不同掺合料的混凝土的孔体积分形维数与强度相关性由高到低依次为:粉煤灰>矿渣>水泥>石灰石。
The pore structure and pore volume fractal dimension of concrete with different admixtures were determined by MIP（mercury intru- sion porosimetry）on experiments.The relationship of pore volume fractal dimension with chloride diffusivity and strength was investigated.Re- sults show that concrete chloride diffusivity is propotional to its pore volume fractal dimension;The order of the correlation between pore volume fractal dimension and coefficient of chloride diffusivity from high to low is fly ash,slag,lime stone and cement;The order of the correlation be- tween pore volume fractal dimension and strength from high to low is fly ash,slag,cement,lime stone.
出处
《混凝土》
CAS
CSCD
北大核心
2010年第5期7-9,共3页
Concrete
基金
国家自然科学基金(50702055)
关键词
体积分形维数
氯离子渗透性
强度
不同掺合料
相关性
pore volume fractal dimension
chloride diffusivity
strength
different admixtures
correlation
