In order to improve the bonding strength and water resistance of sodium silicate adhesive, the cross-linking treatment method was used with polyvinyl alcohol (PVA) and sodium silicate. The effects of cross-linking reaction temperature, time and pH value on bonding strength and water resistance of sodium silicate adhesive were investigated. The mechanism of improving the bonding strength and water resistance with cross-linking modiifcation was studied by adopting Fourier transform infrared spectroscopy (FT-IR). The results show that PVA cross-li...