Abstract
This paper presents an experimental study examining the modification effect and penetration mechanism of silicate-based surface penetrants. The penetration mechanism was evaluated through observation of silicate-based surface penetrants absorption under a vacuum condition. The modification conditions were evaluated by the accelerated carbonation test. Based on the results, it is thought that the penetration mechanism of silicate-based surface penetrants is governed by the concentration diffusion. Further, the modification effect of silicate-based surface penetrants appears to be governed by the quantity of calcium hydroxide because the modification effect changed with the water to cement ratio, cement admixture, and the use of auxiliary materials.
