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  2. Gypsum concrete - Wikipedia

    en.wikipedia.org/wiki/Gypsum_concrete

    Phosphorgypsum-based concrete with sawdust aggregate. Gypsum concrete is a building material used as a floor underlayment used in wood-frame and concrete construction for fire ratings, sound reduction, radiant heating, and floor leveling. [1] It is a mixture of gypsum plaster, Portland cement, and sand. [1]

  3. Soundproofing - Wikipedia

    en.wikipedia.org/wiki/Soundproofing

    A pair of headphones being tested inside an anechoic chamber for soundproofing. Soundproofing is any means of impeding sound propagation.There are several methods employed including increasing the distance between the source and receiver, decoupling, using noise barriers to reflect or absorb the energy of the sound waves, using damping structures such as sound baffles for absorption, or using ...

  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. Floating floor - Wikipedia

    en.wikipedia.org/wiki/Floating_floor

    Instead, they are laid over a thin underlayment or foam padding, allowing them to "float" above the sub-floor. A sprung floor is a special type of floating floor designed to enhance sports or dance performance. In general though the term refers to a floor used to reduce noise or vibration. [4]

  6. Noise barrier - Wikipedia

    en.wikipedia.org/wiki/Noise_barrier

    The sound tube in Melbourne, Australia, designed to reduce roadway noise without detracting from the area's aesthetics.. A noise barrier (also called a soundwall, noise wall, sound berm, sound barrier, or acoustical barrier) is an exterior structure designed to protect inhabitants of sensitive land use areas from noise pollution.

  7. Foam glass - Wikipedia

    en.wikipedia.org/wiki/Foam_glass

    Anti-magnetic wave, anti-static, high mechanical strength, with good adhesion to various types of mud. It is a stable building exterior wall and roof insulation, sound insulation, and waterproof material. According to reports, foam glass can be used in places that require sound insulation and heat insulation, leak prevention and flood control.

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