Bituminous sealants are a sodium silicate based solution which impregnates the surface of concrete. This causes a reaction between the components of the cement and silicate solution, to produce siliceous materials which subsequently reduce and close the pores of the concrete. This has the effect of hardening the surface and making the concrete dustproof.
- Produces a surface hardening effect, to a depth of 1.0 cm - 1.5 cm
- Application of bituminous sealants improves surface resistance to chemical attack
- Increase protection against acid attack
- Reduces the surface permeability of concrete