New ASTM C150 2011 / C150M 2011 Edition, entitled Standard Specification for Portand Cement, has just been released. The new edition replaces the 2009 version and covers both metric and inch-pound units.
ASTM C150 / C150M covers ten types of portland cement: Type I, Type IA, Type II, Type II(MH), Type II(MH)A, Type IIA, Type III, Type IIIA, Type IV, and Type V. The cement covered by the specification only contains the following ingredients: portland cement clinker, water or calcium sulfate (or both), limestone, processing additions, and air-entraining addition for air-entraining portland cement.
Portland cements must meet various physical and chemical requirements which are detailed in this specification. Examples include limits on aluminum oxide, ferric oxide, magnesium oxide, sulfur trioxide, tricalcium silicate, dicalcium silicate, tricalcium aluminate, and tetracalcium aluminoferrite.
Applicable properties enumerated in this specification are determined by the following test methods: air content of mortar, chemical analysis, compressive strength, false set, fineness by air permeability, fineness by turbidimeter, heat of hydration, autoclave expansion, time of setting by Gillmore needles, time of setting by Vicat needles, sulfate resistance, calcium sulfate, and compressive strength.
Cement is to be stored in such a manner as to permit easy access for proper inspection and identification of each shipment, and in a suitable weather-tight building that will protect the cement from dampness and minimize warehouse set.
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