摘要
通过质子的磁性弛豫法,研究了三种活性粉末混凝土孔隙分布的离散、不规则特征,评价了每一种配比表面的不规则尺寸,同时揭示了孔隙的层次。29Si核磁共振方法(NMR)验证了不规则尺寸、水泥骨料填充率以及硅灰活性之间的联系。
The pore size distribution in three reactive powder concrete formulations has been studied by nuclear magnetic relaxation of protons. Confirming the discrete and fractal features of the distribution for concrete,each formulation is assessed a surface fractal dimension, which reveals the hierarchy of pores. The 29Si nuclear magnetic resonance (NMR) evidences a dependence between this dimension and both the filling ratio of cement grains and the reactivity of silica fume.
出处
《科学技术与工程》
2005年第11期752-754,共3页
Science Technology and Engineering
基金
铁道部基金(TJD03010)资助
关键词
活性粉末混凝土
孔径分布
核磁共振
reactive powder concrete pore size distribution nuclear magnetic resonance
