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2. Alite - Wikipedia

   en.wikipedia.org/wiki/Alite

   Which can also be written in the cement chemist notation as: 2C 3 S + 6H → C 3 S 2 H 3 + 3CH + 6H 2 O → C-S-H + The hydrate is referred to as the calcium silicate hydrate – "C-S-H-" – phase. It grows as a mass of interlocking needles that provide the strength of the hydrated cement system. High alite reactivity is desirable in Portland ...

3. Sulfate attack in concrete and mortar - Wikipedia

   en.wikipedia.org/wiki/Sulfate_attack_in_concrete...

   Alteration of hardened cement paste composition, with monosulfate aluminates phase converting to ettringite and, in later stages, gypsum formation. The necessary additional calcium is provided by the calcium hydroxide and calcium silicate hydrate in the cement paste; The effect of these changes is an overall loss of concrete strength.

4. Cement chemist notation - Wikipedia

   en.wikipedia.org/wiki/Cement_chemist_notation

   Cement chemist notation (CCN) was developed to simplify the formulas cement chemists use on a daily basis. It is a shorthand way of writing the chemical formula of oxides of calcium , silicon , and various metals .

5. Belite - Wikipedia

   en.wikipedia.org/wiki/Belite

   Belite is the mineral in Portland cement responsible for development of "late" strength. The other silicate, alite contributes "early" strength, due to its higher reactivity. Belite reacts with water (roughly) to form calcium silicate hydrates (C-S-H) and portlandite (Ca(OH) 2 ) according to the reaction:

6. Calcium silicate hydrate - Wikipedia

   en.wikipedia.org/wiki/Calcium_silicate_hydrate

   When water is added to cement, each of the compounds undergoes hydration and contributes to the final state of the concrete. [2] Only calcium silicates contribute to the strength. Tricalcium silicate is responsible for most of the early strength (first 7 days). [3] Dicalcium silicate, which reacts more slowly, only contributes to late strength.

7. Calcium silicate - Wikipedia

   en.wikipedia.org/wiki/Calcium_silicate

   Calcium-silicate passive fire protection board being clad around steel structure in order to achieve a fire-resistance rating. Calcium silicate is commonly used as a safe alternative to asbestos for high-temperature insulation materials. Industrial-grade piping and equipment insulation is often fabricated from calcium silicate.