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  2. Concrete leveling - Wikipedia

    en.wikipedia.org/wiki/Concrete_leveling

    In civil engineering, concrete leveling is a procedure that attempts to correct an uneven concrete surface by altering the foundation that the surface sits upon. It is a cheaper alternative to having replacement concrete poured and is commonly performed at small businesses and private homes as well as at factories, warehouses, airports and on roads, highways and other infrastructure.

  3. List of polyurethane applications - Wikipedia

    en.wikipedia.org/wiki/List_of_polyurethane...

    Polyurethane foam sponge. Open-cell flexible polyurethane foam is used to make many kitchen and bathroom sponges. The combination of low cost, high flexibility and high abrasion and tear resistance make polyurethanes excellent materials for scrubbing applications. [3] Polyurethane sponges have been shown to reduce the risk of spreading certain ...

  4. Polyurethane foam - Wikipedia

    en.wikipedia.org/wiki/Polyurethane_foam

    An assortment of polyurethane foam products for cushioning and insulation. Polyurethane foam is a solid polymeric foam based on polyurethane chemistry. As a specialist synthetic material with highly diverse applications, polyurethane foams are primarily used for thermal insulation and as a cushioning material in mattresses, upholstered furniture or as seating in vehicles.

  5. Spray foam - Wikipedia

    en.wikipedia.org/wiki/Spray_foam

    Spray foam insulation or spray polyurethane foam (SPF) is an alternative to traditional building insulation such as fiberglass. A two-component mixture composed of isocyanate and polyol resin comes together at the tip of a gun, and forms an expanding foam that is sprayed onto roof tiles, concrete slabs, into wall cavities, or through holes ...

  6. Building insulation material - Wikipedia

    en.wikipedia.org/wiki/Building_insulation_material

    [12] a water-blown low density spray polyurethane foam that uses water in a chemical reaction to create carbon dioxide and steam which expands the foam. Flame spread is 21 and smoke developed is 217 which makes it a Class I material (best fire rating).

  7. Why foam-filled tires cost up to $10,000 - AOL

    www.aol.com/news/why-foam-filled-tires-cost...

    Foam-filled tires are made of regular rubber but replace the air inside with hardened liquid urethane. While they come with benefits like being impervious to flats, they can only be used on slow ...