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Engineering (คำศัพท์วิศวกรรม) : ความหมายของคำว่า  Cement, Portland (ASTM C150) (Concrete Engineering) คือ ...
  Cement, Portland (ASTM C150) (Concrete Engineering) ความหมาย คือ A powdery substance made by burning, at a high temperature, a mixture of clay and limestone producing lumps called “clinkers” which are ground into a fine powder consisting of hydraulic calcium silicates. For non-portland cements, see aluminous cement.
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