Kalciumszilikáthidrat

Kalciumszilikáthidrat is a chemical compound with the general formula Ca2SiO4·nH2O. It is a hydrated form of calcium silicate. The exact structure and water content can vary, leading to different forms and properties. This compound is often encountered as a component in certain cementitious materials, particularly those that have undergone hydration. When Portland cement hydrates, a series of complex chemical reactions occur, and calcium silicate hydrate (C-S-H) gel is a primary product. While the term "kalciumszilikáthidrat" can refer to various hydrated calcium silicates, it is frequently used in a broader sense to describe the C-S-H gel that forms during cement hydration. This gel is crucial for the strength and durability of concrete. It is an amorphous material, meaning it lacks a regular crystalline structure. Its formation involves the reaction of calcium compounds with silica compounds in the presence of water. The properties of kalciumszilikáthidrat, such as its porosity and surface area, influence the overall behavior of the hardened cement paste. It is not typically synthesized as a pure compound for specific applications but rather arises as an in-situ product in cement-based systems.