| 31. | White Portland cement differs physically from gray cement only in terms of its color.
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| 32. | Cement kilns are the furnaces that produce Portland cement, the active ingredient in concrete.
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| 33. | All three were built of tile, brick and Portland cement.
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| 34. | Lower Sept . ARP of Portland Cement, Plywood, GI Sheets
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| 35. | It produced 17 million bags of Portland Cement a year.
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| 36. | The of upland pasture were donated by Portland Cement to mark European Conservation Year.
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| 37. | Hydration is the mechanism by which hydraulic binders such as Portland cement develop strength.
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| 38. | The material was popular but was superseded by Portland cement.
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| 39. | The manufacture of Portland cement produces massive amounts of CO2.
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| 40. | Modern stucco is made of Portland cement, sand, and water.
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