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  2. Gypsum - Wikipedia

    en.wikipedia.org/wiki/Gypsum

    Gypsum has negligible heat conductivity, giving its plaster some insulative properties. [37] Gypsum blocks are used like concrete blocks in construction. Gypsum mortar is an ancient mortar used in construction. A component of Portland cement used to prevent flash setting (too rapid hardening) of concrete.

  3. California bearing ratio - Wikipedia

    en.wikipedia.org/wiki/California_bearing_ratio

    The California Bearing Ratio (CBR) is a measure of the strength of the subgrade of a road or other paved area, and of the materials used in its construction. The ratio is measured using a standardized penetration test first developed by the California Division of Highways for highway engineering . [ 1 ]

  4. Gypsum concrete - Wikipedia

    en.wikipedia.org/wiki/Gypsum_concrete

    It is a mixture of gypsum plaster, Portland cement, and sand. [ 1 ] Gypsum concrete is sometimes called gypcrete by construction professionals , [ 2 ] [ 3 ] as a generic name in common usage (but not in law), but that is an alteration of Gyp-Crete , a Maxxon trademark for its brand of gypsum concrete. [ 4 ]

  5. Ferrocement - Wikipedia

    en.wikipedia.org/wiki/Ferrocement

    Ferrocement or ferro-cement [1] is a system of construction using reinforced mortar [2] or plaster (lime or cement, sand, and water) applied over an "armature" of metal mesh, woven, expanded metal, or metal-fibers, and closely spaced thin steel rods such as rebar. The metal commonly used is iron or some type of steel, and the mesh is made with ...

  6. Cement board - Wikipedia

    en.wikipedia.org/wiki/Cement_board

    Cement board is composed of aggregated Portland cement with a glass-fiber mesh on the surfaces. This 5 ⁄ 16 inch (7.9 mm) thick cement board is designed as an underlayment for tile floors. These are 3-by-5-foot (91 by 152 cm) sheets.

  7. Plasterwork - Wikipedia

    en.wikipedia.org/wiki/Plasterwork

    The hard cements used for plastering, such as Parian, Keene's, and Martin's, are laid generally in two coats, the first of cement and sand 1/2 to 3/4 inches thick, the second or setting coat of neat cement about 1/8 inch thick.

  8. California worker died in a cement mixer. His case was ... - AOL

    www.aol.com/news/california-worker-died-cement...

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  9. California Department of Motor Vehicles - Wikipedia

    en.wikipedia.org/wiki/California_Department_of...

    The California Department of Motor Vehicles (DMV) is the state agency that registers motor vehicles and boats and issues driver licenses in the U.S. state of California. It regulates new car dealers (through the New Motor Vehicle Board), commercial cargo carriers, private driving schools, and private traffic schools.