Penetrating Concrete Surface Treatment

Applying penetrating concrete treatment (silane or other penetrating sealers) to concrete surfaces is beneficial to reduce deicing salts from penetrating the concrete. When salt reaches the reinforcing steel, it will corrode and result in spalling concrete. The most effective means of ensuring performance from silane is proper concrete surface preparation prior to application. Shot blasting the surface is believed to be the best surface preparation treatment, then abrasive blasting. Lastly water blasting is also allowed, but intensity of water must be sufficient to prepare the surface to absorb the sealer plus the concrete must be allowed to dry out sufficiently to accept the material which makes this the least desirable surface treatment. When traffic control is set up across a bridge for roadway work, it is a good practice to address the concrete bridge deck while mobilized. Maximum recommended reapplication interval is ten years.