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    Brick is one of the oldest building materials production and its use, according to some archaeologists believe that about ten thousand years ago. Pottery kilns and brick fillings in Kashan Silk found in Susa, and the life of the fourth millennium before Christ returns.
    Date: 9/28/2015       (visite count : 3060)

    History of Portland cement at the beginning of the nineteenth century, the first attempt to produce an artificial mixture of limestone and clay to produce cement (lime water), the French Vykat.
    Date: 9/28/2015       (visite count : 3032)