Calcium silicate hydrate (also shown as C-S-H) is a result of the reaction between the silicate phases of Portland cement and water. This reaction typically is expressed as: 2 Ca 3 SiO 5 + 7 H 2 O → 3 CaO · 2 SiO 2 · 4 H 2 O + 3 Ca(OH) 2 + 173.6 kJ. also written in cement chemist notation, (CCN) as: 2 C 3 S + 7 H → C 3 … Ver mais Calcium silicate hydrates (or C-S-H) are the main products of the hydration of Portland cement and are primarily responsible for the strength of cement-based materials. They are the main binding phase ("the … Ver mais C-S-H is a nano sized material with some degree of crystallinity as observed by X-ray diffraction techniques. The underlying atomic structure of … Ver mais When water is added to cement, each of the compounds undergoes hydration and contributes to the final state of the concrete. Only calcium silicates contribute to the strength. Tricalcium silicate is responsible for most of the early strength (first 7 days). … Ver mais • Afwillite – Nesosilicate alteration mineral also sometimes found in hydrated cement paste • Gyrolite – Rare phyllosilicate mineral crystallizing in spherules (a rare mineral from hydrothermal alteration, or an ageing product of alkali-silica reaction) Ver mais WebFig. 1 Schematic representation of infinite chain length non-cross-linked C-(N,K-)A-S-H as a structural analogue of 14 Å tobermorite, 20 with stacked layers to show alkali species adsorbed on the external surface and in the interlayer region of this phase. The red diamonds are CaO polyhedra in the Ca–O sheet, and the blue and green triangles are …
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