Waterproof Performances of CNT Cement-based Composites Modified by Doped Silane Waterproofing Agent

Qianqian Li, Qiuyi Li, Gongbing Yue, Yuanxin Guo

Abstract


We integrated orthogonal experiment technique with three factors and three levels, and employed single-surface capillary absorption method to study the effects of water-cement ratio (W/C), the loading of carbon nanotube (wCNT), the addition of silane waterproofing agent (wKH55) on the waterproof performances of CNT cement-based materials modified by doped silane waterproofing agent (KH/CNT/CC). Orthogonal range analysis reveals, when the KH/CNT/CC specimen is in condition of W/C=0.32, wCNT=0.2%, wKH55=0.5%, the mass of water absorption is the minimum, and the water resistance is the best. The absorbed water mass after 96h of KH/CNT/CC with wKH55=0.5% is decreased by 170.1g/m2 when compared with the case with wKH55=0.1%, the incorporation of silane waterproofing agent has effectively improve the impermeability of CNT cement-based composites. This will provide a reference for the development of the intrinsic sensors with excellent waterproof performance.


DOI
10.12783/dtmse/ictim2017/9922

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