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  2. Cementation (geology) - Wikipedia

    en.wikipedia.org/wiki/Cementation_(geology)

    Calcite cement in an ooid-rich limestone; Carmel Formation, Jurassic of Utah. Minerals bond grains of sediment together by growing around them. This process is called cementation and is a part of the rock cycle. Cementation involves ions carried in groundwater chemically precipitating to form new crystalline material between sedimentary grains ...

  3. Concretion - Wikipedia

    en.wikipedia.org/wiki/Concretion

    This concretionary cement often makes the concretion harder and more resistant to weathering than the host stratum. There is an important distinction to draw between concretions and nodules . Concretions are formed from mineral precipitation around some kind of nucleus while a nodule is a replacement body.

  4. Cement - Wikipedia

    en.wikipedia.org/wiki/Cement

    A cement is a binder, a chemical substance used for construction that sets, hardens, and adheres to other materials to bind them together. Cement is seldom used on its own, but rather to bind sand and gravel together. Cement mixed with fine aggregate produces mortar for masonry, or with sand and gravel, produces concrete. Concrete is the most ...

  5. Soil cement - Wikipedia

    en.wikipedia.org/wiki/Soil_cement

    A cement-modified soil contains a relatively small proportion of Portland cement, less than in ordinary soil-cement. [1] The result is caked or slightly hardened material, similar to a soil, but with improved mechanical properties such as lower plasticity, increased bearing ratio and shear strength, and decreased volume change. The purpose of ...

  6. Portland cement - Wikipedia

    en.wikipedia.org/wiki/Portland_cement

    Portland cement is the most common type of cement in general use around the world as a basic ingredient of concrete, mortar, stucco, and non-specialty grout. It was developed from other types of hydraulic lime in England in the early 19th century by Joseph Aspdin , and is usually made from limestone .

  7. Remediation of contaminated sites with cement - Wikipedia

    en.wikipedia.org/wiki/Remediation_of...

    Cement was mixed into the contaminated waste to solidify and stabilize it. [6] When the S/S process was complete, the solidified areas were covered with an engineered cap consisting of a clay, followed by layers of gravel and soil. Finally, the surface was planted with grass and other vegetation. [7]

  8. Ready-mix concrete - Wikipedia

    en.wikipedia.org/wiki/Ready-mix_concrete

    A centralized concrete batching plant can serve a wide area. Site-mix trucks can serve an even larger area including very remote locations that standard trucks cannot. The batch plants are located in areas zoned for industrial use, while the delivery trucks can service residential districts or inner cities. Site-mix trucks have the same ...

  9. Soil - Wikipedia

    en.wikipedia.org/wiki/Soil

    After the death of plants, animals, and microbes, microbes begin to feed on the residues through their production of extra-cellular soil enzymes, resulting finally in the formation of humus. [162] As the residues break down, only molecules made of aliphatic and aromatic hydrocarbons, assembled and stabilized by oxygen and hydrogen bonds, remain ...

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