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  2. Want a Patio? Try Stamped Concrete as a Low-Cost Alternative

    www.aol.com/news/2013-04-10-stamped-concrete...

    A stamped concrete patio costs $10-$15 per square foot, professionally installed. ... base of compacted sand and gravel. • It's heavy; you'll need to be strong. ... sure the new level doesn't ...

  3. Concrete leveling - Wikipedia

    en.wikipedia.org/wiki/Concrete_leveling

    This is equal to 34,560 pounds of lifting force per square foot. With Portland cement added, this can increase to over 6,000 psi [5] or 864,000 pounds per square foot. Once the slurry dries it creates a near-solid stone foundation for the leveled concrete (much like the original stone base the concrete was poured upon.)

  4. Permeable paving - Wikipedia

    en.wikipedia.org/wiki/Permeable_paving

    Some estimates put the cost of permeable paving at about one third more expensive than that of conventional impervious paving. [20] Using permeable paving, however, can reduce the cost of providing larger or more stormwater BMPs on site, and these savings should be factored into any cost analysis. In addition, the off-site environmental impact ...

  5. Gypsum concrete - Wikipedia

    en.wikipedia.org/wiki/Gypsum_concrete

    Gypsum concrete is lightweight and fire-resistant. A 1.5-inch slab of gypsum concrete weighs 13 pounds per square foot versus 18 pounds per square foot for regular concrete. [10] Even though gypsum concrete weighs less, it still has the same compressive strength as regular concrete, based on its application as underlayment or top coat flooring ...

  6. Self-leveling concrete - Wikipedia

    en.wikipedia.org/wiki/Self-leveling_concrete

    Self-leveling concrete was invented in 1952 by Axel Karlsson from Sweden. The first product was a combination of wood glue, fine sand and cement with additives. [1] It was called flytspackel, which directly translates to "floating putty". The term self-leveling can be traced back to a patent applied by the company Lafarge in 1997. [2]

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