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  2. Concrete leveling - Wikipedia

    en.wikipedia.org/wiki/Concrete_leveling

    Concrete leveling with foam injection. Foam leveling uses polyurethane in an injection process. [7] A two-part polymer [8] is injected through a hole less than one inch in diameter. Although the material is injected at a higher pressure than traditional cementitious grouts, the pressure is not what causes the lifting. The expansion of the air ...

  3. Foam concrete - Wikipedia

    en.wikipedia.org/wiki/Foam_concrete

    Foam concrete is a versatile building material with a simple production method that is relatively inexpensive compared to autoclave aerated concrete. [1] Foam concrete compounds utilising fly ash in the slurry mix is cheaper still, and has less environmental impact. Foam concrete is produced in a variety of densities from 200 kg/m 3 to 1,600 kg ...

  4. Types of concrete - Wikipedia

    en.wikipedia.org/wiki/Types_of_concrete

    Unlike air-entrained concrete, which introduces tiny air bubbles through an admixture during mixing, foam concrete replaces coarse aggregates with these air bubbles, resulting in a significant difference in density, with foam concrete typically ranging from 400 kg/m3 to 1600 kg/m3, whereas air-entrained concrete maintains its density.

  5. The lessons for every homeowner from the LA wildfires - AOL

    www.aol.com/lessons-every-homeowner-la-wildfires...

    Wood components, Long says, are "literally the worst possible product you could use" in the event of high winds, flooding, or fire since they burn (unlike concrete) and aren't as sturdy as, say ...

  6. 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 ...

  7. Merion Village duplex built to look like vintage German ...

    www.aol.com/merion-village-duplex-built-look...

    Including the lower level, the duplex includes 4,600 square feet, 2,300 on each side. Each side of The Book House duplex includes a small back yard. A fire pit will be added between the benches.