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  2. Silicon organic water repellent - Wikipedia

    en.wikipedia.org/wiki/Silicon_organic_water...

    for concrete, asbestos, gypsum, ceramic, porcelain; in the production of waterproof papers and leather; in the production of water-resistant fabrics; by volumetric method in the manufacture of paving tiles, slabs, curbs, fences of different silicate materials; as plasticizer in the preparation of plaster, lime and cement solutions;

  3. Hexafluorosilicic acid - Wikipedia

    en.wikipedia.org/wiki/Hexafluorosilicic_acid

    The application of hexafluorosilicic acid to a calcium-rich surface such as concrete will give that surface some resistance to acid attack. [13] CaCO 3 + H 2 O → Ca 2+ + 2 OH − + CO 2 H 2 SiF 6 → 2 H + + SiF 2− 6 SiF 2− 6 + 2 H 2 O → 6 F − + SiO 2 + 4 H + Ca 2+ + 2 F − → CaF 2. Calcium fluoride (CaF 2) is an insoluble solid ...

  4. Calcium stearate - Wikipedia

    en.wikipedia.org/wiki/Calcium_stearate

    The concrete industry uses calcium stearate for efflorescence control of cementitious products used in the production of concrete masonry units i.e. paver and block, as well as waterproofing. [ 3 ] In paper production, calcium stearate is used as a lubricant to provide good gloss, preventing dusting and fold cracking in paper and paperboard making.

  5. Sodium dichloroisocyanurate - Wikipedia

    en.wikipedia.org/wiki/Sodium_dichloroisocyanurate

    Sodium dichloroisocyanurate (INN: sodium troclosene, troclosenum natricum or NaDCC or SDIC) is a chemical compound widely used as a cleansing agent and disinfectant. [1] It is a colorless, water-soluble solid, produced as a result of reaction of cyanuric acid with chlorine.

  6. Sulfate attack in concrete and mortar - Wikipedia

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

    Oxidation of pyrite in clay formations in contact with concrete – this produces sulfuric acid which reacts with concrete. Bacterial activity in sewers – anaerobic sulfate reduction at work in the organic-rich sludges accumulated under water in the conduits produces hydrogen sulfide gas (H 2 S).

  7. Cleaning agent - Wikipedia

    en.wikipedia.org/wiki/Cleaning_agent

    Hydrochloric acid is a common mineral acid typically used for concrete. Vinegar can also be used to clean hard surfaces and remove calcium deposits. Sulphuric acid is used in acidic drain cleaners to unblock clogged pipes by dissolving organic materials, like greases, proteins, and even carbohydrate -containing substances such as toilet tissue.

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