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  2. Types of concrete - Wikipedia

    en.wikipedia.org/wiki/Types_of_concrete

    This is of considerable economic value, particularly in a precast factory as the forms can be reused at frequent intervals. The bond strength of vacuum concrete is about 20% higher. The surface of vacuum concrete is entirely free from pitting and the uppermost 1/16 inch is highly resistant to abrasion.

  3. Permeable paving - Wikipedia

    en.wikipedia.org/wiki/Permeable_paving

    Permeable interlocking concrete pavements are concrete units with open, permeable spaces between the units. [ 28 ] : 2 More recently manufacturers have introduced styles with smaller joint allowing for better ADA compliance and still capturing a significant amount of stormwater.

  4. Portland cement - Wikipedia

    en.wikipedia.org/wiki/Portland_cement

    The most common use for portland cement is in the production of concrete. [17] Concrete is a composite material consisting of aggregate (gravel and sand), cement, and water. As a construction material, concrete can be cast in almost any shape desired, and once hardened, can become a structural (load bearing) element.

  5. Concrete - Wikipedia

    en.wikipedia.org/wiki/Concrete

    Concrete is a composite material composed of aggregate bonded together with a fluid cement that cures to a solid over time. Concrete is the second-most-used substance in the world after water, [1] and is the most widely used building material. [2] Its usage worldwide, ton for ton, is twice that of steel, wood, plastics, and aluminium combined. [3]

  6. Pervious concrete - Wikipedia

    en.wikipedia.org/wiki/Pervious_concrete

    Pervious concrete was first used in the 1800s in Europe as pavement surfacing and load bearing walls. [3] Cost efficiency was the main motive due to a decreased amount of cement. [3] It became popular again in the 1920s for two storey homes in Scotland and England. It became increasingly viable in Europe after WWII due to the scarcity of cement.

  7. Sidewalk - Wikipedia

    en.wikipedia.org/wiki/Sidewalk

    Raised sidewalk with stone curbs beside a 2000-year-old paved road in Pompeii, Italy. A sidewalk (North American English) [1] [2] [3] or pavement (British English) is a path along the side of a road. Usually constructed of concrete, pavers, brick, stone, or asphalt, it is designed for pedestrians.

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