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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. Cleaning agent - Wikipedia

   en.wikipedia.org/wiki/Cleaning_agent

   For acid-resistant building facades, such as brick, acids are typically used. These include mixtures of phosphoric and hydrofluoric acids as well as surfactants. For acid-sensitive facades such as concrete, strongly alkaline cleaners are used such as sodium hydroxide and thickeners. Both types of cleaners require a rinsing and often special ...

4. 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.

5. Piranha solution - Wikipedia

   en.wikipedia.org/wiki/Piranha_solution

   Surfaces must be reasonably clean and completely free of organic solvents from previous washing steps before coming into contact with the solution. Piranha solution cleans by decomposing organic contaminants, and a large amount of contaminant will cause violent bubbling and a release of gas that can cause an explosion.

6. J-B Weld - Wikipedia

   en.wikipedia.org/wiki/J-B_Weld

   J-B Weld can be used to bond surfaces made from metal, porcelain, ceramic, glass, marble, PVC, ABS, concrete, fiberglass, wood, fabric, or paper. [7] [8] Alcohol should be avoided when cleaning surfaces, as it can degrade the bond. [9] J-B Weld is water-resistant, petroleum/chemical-resistant (when hardened), and acid-resistant.

7. 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).