This paper aimed to investigate the effect of different dosages silicane on waterproof mechanism and micro-structure of control and modified cement mortar incorporated with silicane using water absorption of capillarity, crack resistance, wettability, permeability resistance and degree of hydration test. At the same time, the micro-structure mechanism of cement mortar were researched by the Scanning electron microscopy (SEM), the X-ray diffraction (XRD), the Fourier transform-infrared spectroscopy (FT-IR) and Nitrogen-absorption test. Modified ...