EPD: Portland-composite cement, ASTM C595, Type IP, Type IS, Type IL, Type IT (Argos USA Corp., Ash Grove Cement, Buzzi Unicem USA, Inc., CalPortland Company, CEMEX USA, Continental Cement, Drake Cement, Federal White Cement, GCC of America, LafargeHolcim, Lehigh Hanson, Martin Marietta Materials, Inc., Mitsubishi Cement Corporation, Monarch Cement Company, National Cement Group, Salt River Materials Group, St. Marys Cement, Suwannee American Cement, Titan America LLC (2023))
The product under evaluation is blended hydraulic cement as defined by ASTM C219 and specified in ASTM C595, ASTM C1157, AASHTO M 240 or CSA A3001. A hydraulic cement consisting of two or more inorganic constituents (at least one of which is not portland cement or portland cement clinker) which separately or in combination contribute to the strength gaining properties of the cement, (made with or without other constituents, processing additions and functional additions, by intergrinding or other blending). (ASTM C219) As a category, blended cement types are identified by their proportional constituents, such as: Type IP (ASTM C595) — Portland-pozzolan cement is a hydraulic cement in which the pozzolan constituent is up to 40 % by mass of the blended cement. Type IS (ASTM C595) — is a hydraulic cement in which the slag constituent is up to 95 % by mass of the blended cement. Portland blast-furnace slag cement with a slag content equal to or exceeding 70 % by mass, is permitted to contain hydrated lime. Type IL (ASTM C595) —Portland-limestone cement shall be a hydraulic cement in which the limestone content is more than 5 % but less than or equal to 15 % by mass of the blended cement. Type IT (ASTM C595) —Ternary blended cement shall be a hydraulic cement consisting of an intimate and uniform blend produced either by intergrinding, by blending, or a combination of intergrinding, and blending Portland cement clinker or Portland cement with (1) two different pozzolans, (2) slag and a pozzolan, (3) a pozzolan and a limestone, or (4) a slag and a limestone. Ternary blended cement Type IT(S≥70) shall have a maximum limestone content of 15 % by mass and is permitted to contain hydrated lime. All other ternary blended cements shall have a maximum pozzolan content of 40 % by mass of the blended cement, a maximum limestone content of 15 % by mass of the blended cement, and the total content of pozzolan, limestone, and slag shall be less than 70 % by mass of the blended cement. Any slag, pozzolan, or limestone used as ingredient in Portland cement used to manufacture a blended cement shall be included in the total amount of those materials.
USA