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  2. Voided biaxial slab - Wikipedia

    en.wikipedia.org/wiki/Voided_biaxial_slab

    Concrete is poured around these plastic forms to create internal voids in the slab A voided biaxial slab installation in Turkey. Voided biaxial slabs, sometimes called biaxial slabs or voided slabs, are a type of reinforced concrete slab which incorporates air-filled voids to reduce the volume of concrete required.

  3. List of polyurethane applications - Wikipedia

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

    Industrial Insulation. Rigid polyurethane foam is used in various industries to provide thermal insulation to installations and pipes. In particular, the piping for district heating systems in Europe is primarily insulated using a pre-insulated pipes sandwich assembly composed of a steel heat service pipe, an insulating layer (polyurethane foam) and a polyethylene (PE) casing, which are bonded ...

  4. Underlay - Wikipedia

    en.wikipedia.org/wiki/Underlay

    Underlay or underlayment [1] generally refers to a layer of cushioning made of materials such as sponge rubber, foam, felt, crumb rubber, or recycled plastic; this material is laid beneath carpeting to provide comfort underfoot, to reduce wear on the carpet, and to provide insulation against sound, moisture, and heat. [2]

  5. Concrete sleeper - Wikipedia

    en.wikipedia.org/wiki/Concrete_sleeper

    To reduce degradation of the ballast, a very stiff semi-plastic polyurethane foam can be used that mimics the plastic behaviour of wooden sleepers; the ballast stones are pressed into the surface of the sleeper, increasing contact area. Typically, these pads are 7 mm (0.28 in) to 10 mm (0.39 in) thick.

  6. Polymer concrete - Wikipedia

    en.wikipedia.org/wiki/Polymer_concrete

    Polymer concrete is a type of concrete that uses a polymer to replace lime-type cements as a binder. One specific type is epoxy granite , where the polymer used is exclusively epoxy . In some cases the polymer is used in addition to portland cement to form Polymer Cement Concrete (PCC) or Polymer Modified Concrete (PMC). [ 1 ]

  7. Health insurers limit coverage of prosthetic limbs ... - AOL

    www.aol.com/health-insurers-limit-coverage...

    When Michael Adams was researching health insurance options in 2023, he had one very specific requirement: coverage for prosthetic limbs. The roughly $50,000 leg with the electronically controlled ...

  8. Properties of concrete - Wikipedia

    en.wikipedia.org/wiki/Properties_of_concrete

    Concrete has a very low coefficient of thermal expansion, and as it matures concrete shrinks. All concrete structures will crack to some extent, due to shrinkage and tension. Concrete which is subjected to long-duration forces is prone to creep. The density of concrete varies, but is around 2,400 kilograms per cubic metre (150 lb/cu ft). [1]

  9. Ina Garten's favorite Lodge cast iron pan is over 40% off ...

    www.aol.com/lifestyle/ina-gartens-favorite-lodge...

    What reviewers say 💬. More than 98,000 Amazon shoppers are so impressed by their Lodge skillets, they've awarded them five-star ratings.. Pros 👍 "Lodge is hands down the best brand when it ...

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