HOt Products
The cement covered by this specification shall only contain 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 cement of each of the eight types must have the following chemical compositions: aluminum Dec 16, 2014 Portland cement is the most common type of cement in the world. It is used primarily to make concrete, mortar, and grout. Portland cement is made by grinding raw materials that include limestone, clay, and bauxite to a fine powder, called raw meal, which is then heated in a rotating kiln to a sintering temperature as high as 1450 °C. Employees who work with portland cement are at risk of developing skin problems, ranging from mild and brief to severe and chronic. Wet portland cement can damage the skin because it is caustic, abrasive, and absorbs moisture. Portland cement also contains trace amounts of hexavalent chromium [Cr(VI)], a toxin harmful to the skin. 4.1 Materials shall conform to the requirements of the specified herein. 4.2 Cement: 4.2.1 Portland Cement—Specification C150, Type I, II, and III, as specified. White where specified. 4.2.2 Air-Entraining Portland Cement—Specification C150, type as specified. White where specified. 4.2.3 Masonry Cement—Specification C91, Types N, S, and Type I/II cement is defined as a cement that meets the requirements of both Type I and Type II cements. High alkali cement is defined as any Portland cement having an alkali content in excess of 0.70% as denoted on the Approved List. High alkali cement use is restricted, unless otherwise
Standard Specification for Portland Cement
Are You Ready for the New MACT Requirements for Portland
Preventing Skin Problems from Working with Portland Cement
Standard Specification for Application of Portland Cement
ITEM 501.01000001 PORTLAND CEMENT CONCRETE