Abstract: Water-based infiltration capillary/crystalline waterproof (WCCW) material can repair damaged concrete and improve concrete's durability. We investigated the impact of WCCW material on early cracking resistance, compressive strength, and chloride ion corrosion resistance in concrete. Moreover, we examined the microstructure morphology of hardened cement pastes using scanning electron microscopy (SEM), the polymerization of Calcium Silicate Hydrate (CSH) gel via Fourier transform infrared spectroscopy (FTIR), and analyzed the penetration depth of WCCW material through energy-dispersive spectrometry (EDS). Experimental findings demonstrate several benefits of WCCW material, including improved appearance quality of concrete, enhanced early cracking resistance, compressive strength, and chloride ion corrosion resistance. Additionally, the material enhances the polymerization of CSH gel and increases the density of concrete. WCCW material penetrates to a maximum depth of 10 mm to 12 mm, obeying Fick's law of diffusion. The strength and curing age of concrete also affect the performance of WCCW material, and the optimal curing age is 14 days.

Key words: concrete, water-based, infiltration capillary/crystalline material, anti-permeability, penetration depth, mechanism of action