Lithium polysilicate is a chemical hardener applied to the concrete surface. Generally, spray operation is used to apply lithium polysilicate to a newly placed concrete surface. Here we describe how lithium polysilicate solution reacts with concrete?
Calcium hydroxide is a byproduct of cement hydration. Lithium polysilicate reacts with calcium hydroxide in concrete and produces Calcium Silicate Hydrate. It settled mostly in pores and canals close to the concrete surface. And its effect increases manifold when applied to concrete that is porous.
Usually, The chemical reaction takes around 15 days between lithium polysilicate and concrete.
And calcium silicate hydrate is the same substance that is created as a result of blending water with cement and provides concrete with much of its strength and hardness.