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  2. Cement board - Wikipedia

    en.wikipedia.org/wiki/Cement_board

    A cement board is a combination of cement and reinforcing fibers formed into sheets, of varying thickness that are typically used as a tile backing board. [1] Cement board can be nailed or screwed to wood or steel studs to create a substrate for vertical tile and attached horizontally to plywood for tile floors, kitchen counters and backsplashes.

  3. Fiber cement siding - Wikipedia

    en.wikipedia.org/wiki/Fiber_cement_siding

    Blue fiber cement siding HardiePanel on design-build addition, Ithaca NY. Fiber cement siding (also known as "fibre cement cladding" in the United Kingdom, "fibro" in Australia, and by the proprietary name "Hardie Plank" in the United States) is a building material used to cover the exterior of a building in both commercial and domestic applications.

  4. Sulfate attack in concrete and mortar - Wikipedia

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

    A fairly well-defined reaction front can often be observed in thin sections; ahead of the front the concrete is normal, or near normal. Behind the reaction front, the composition and the microstructure of concrete are modified. These changes may vary in type or severity but commonly include: Extensive cracking; Expansion

  5. 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 ...

  6. 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:

  7. 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 .

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