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  2. 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 ...

  3. 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 .

  4. Concrete - Wikipedia

    en.wikipedia.org/wiki/Concrete

    A ready-mix plant blends all of the solid ingredients, while a central mix does the same but adds water. A central-mix plant offers more precise control of the concrete quality. Central mix plants must be close to the work site where the concrete will be used, since hydration begins at the plant.

  5. Limestone Calcined Clay Cement - Wikipedia

    en.wikipedia.org/wiki/Limestone_Calcined_Clay_Cement

    The main components of LC3 cements are clinker, calcined clay, limestone, and gypsum. [24] [25] [26] The fresh concrete production involves synergetic hydration.[10] [27] Adding large amounts of calcined clay and ground limestone to the dry cement powder, [28] [29] when adding water to the mix for making concrete, cement and additives start to hydrate and the soluble aluminates released in ...

  6. Cement kiln - Wikipedia

    en.wikipedia.org/wiki/Cement_kiln

    Over a billion tonnes of cement are made per year, and cement kilns are the heart of this production process: their capacity usually defines the capacity of the cement plant. As the main energy-consuming and greenhouse-gas–emitting stage of cement manufacture, improvement of kiln efficiency has been the central concern of cement manufacturing ...

  7. William C. Steere, Jr. - Pay Pals - The Huffington Post

    data.huffingtonpost.com/paypals/william-c-steere-jr

    From January 2008 to April 2011, if you bought shares in companies when William C. Steere, Jr. joined the board, and sold them when he left, you would have a -2.9 percent return on your investment, compared to a -7.3 percent return from the S&P 500.

  8. Village People front man says ‘YMCA’ isn’t a gay ... - AOL

    www.aol.com/village-people-front-man-says...

    The Village People’s lyricist and lead singer has hit out at the “false assumption” that the band’s biggest hit, “YMCA,” is a “gay anthem.”

  9. Concrete plant - Wikipedia

    en.wikipedia.org/wiki/Concrete_plant

    A wet mix concrete plant combines some or all of the above ingredients (including water) at a central location into a concrete mixer - that is, the concrete is mixed at a single point, and then simply agitated on the way to the jobsite to prevent setting (using agitators or ready mix trucks) or hauled to the jobsite in an open-bodied dump truck ...