WebA four-level thought model utilized for upscaling thermal properties of cement paste from the nanoscale to engineering scale. (a) Snapshot of a nanotexture of CSH at Ca∶Si ¼ 1.5. 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 H2O → 3 CaO · 2 SiO 2 · 4 H2O + 3 Ca (OH)2 + 173.6 kJ. also written in cement chemist notation, (CCN) as: See more 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 … See more 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 C-S-H is similar to the naturally occurring … See more 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). … See more • Afwillite – Nesosilicate alteration mineral also sometimes found in hydrated cement paste • Gyrolite – Rare phyllosilicate mineral crystallizing in spherules (a rare mineral from hydrothermal … See more
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Web143 Likes, 59 Comments - Juliana Venturi Limberger (@juventuri) on Instagram: "• F R I D A Y • What would you choose for your friday night ? In the options of ... WebBy producing more CSH the paste becomes stronger over time and also closes off more of the capillaries that allow the movement of moisture through the concrete. The result is a stronger, more durable concrete … simple teachers day cards
The composition of the C-S-H phases in portland cement pastes
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