20/07/2020
Alkaline sodium-based concrete sealing hardener (MF3681)---1
1) Why use concrete sealing hardener?
Concrete strength most comes from calcium silicate compounds (C-S-H), which are produced by the reaction of silicon and calcium of cement under hydration reaction (C-S-H). After initial setting, the concrete is still ongoing the hydration reaction (C-S-H) slowly, usually this reaction cannot be carried out entirely in natural conditions, thus leading to the concrete surface prone to dust problems and lack of hardness. Sealing hardener includes the activated silicic acid radical ions (SiO32-) and can easily react with the free calcium ion of concrete to form the calcium silicate hydrate (C-S-H), therefore the more greatly improving the concrete hardness and wearing strength.