The development of modern Portland cement ( sometimes called ordinary or normal Portland cement ) began in 1756 when John Smeaton experimented with combinations of different limestones and additives, including trass and pozzolanas, relating to the planned construction of a lighthouse now known as Smeaton's Tower.
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He performed experiments with combinations of different limestones and additives including trass and pozzolanas and did exhaustive market research on the available hydraulic limes, visiting their production sites, and noted that the " hydraulicity " of the lime was directly related to the clay content of the limestone from which it was made.
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Other members of his expedition group included well known scientists Harry Ling, Kaarel Orviku, Erast Parmasto, Ants Raik, Anto Raukas, Hans Trass, the artist Kalju Polli, and filmmaker Hans Roosipuu . " Traveling is the only passion that doesn't need to feel shy in front of intellect, " wrote Meri.
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Output of other minerals in 2003 output in metric tons, include : limestone and marble, 24, 477, 000 metric tons; dolomite, 6, 079, 000 metric tons, for the domestic cement industry, along with calcite and limestone; gypsum and anhydrite, 1, 004, 000 metric tons; brine salt, 3, 422, 000 cubic meters ( salt mines are owned by the government, with plans to privatize the operations ); tungsten, 1, 400 tons; pumice ( trass ), 4, 000 tons; and crude kaolin, 100, 000 metric tons.
How to say trass in Hindi and what is the meaning of trass in Hindi? trass Hindi meaning, translation, pronunciation, synonyms and example sentences are provided by Hindlish.com.
