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工程力学  2014 

高性能水泥基纳米胶凝材料渗透性能及孔径分布试验研究

, PP. 265-268

Keywords: 水泥基复合材料,纳米胶凝材料,渗透性,压汞仪,孔隙分布

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Abstract:

为解决混凝土脆性开裂引发的结构渗漏问题,该文提出一种新型高性能纳米改性水泥基复合材料(简称HPNCC)。借助砂浆抗渗仪和压汞仪,着重研究HPNCC材料在恒定水压作用下的渗透性能和微观孔隙分布。试验结果表明,HPNCC材料的相对渗透系数仅为3.64×10-9cm/h,其抗渗性能是传统纤维增强水泥基复合材料(UHTCC)及普通混凝土的1000倍以上,微观孔隙尺寸更小,结构更为致密,具有优异的抗渗性能。

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