Quick-setting portland cement

摘要: A PORTLAND CEMENT COMPOSITION IS DESCRIBED WHICH CAPABLE OF SETTING IN SHORT PERIOD TIME. THE CONTAINS AN ADDITIVE COMPOSED ETHANOLAMINE AND ACETATE, ACETIC ACID OR ANHYDRIDE AMOUNTS BY WEIGHT BETWEEN ABOUT 0.1% 0.4%. INCLUDES SULFUR COMBINED AS SO3 CONTROLLED 1% 2.5% HAS BLAINE FINENESS AT LEAST 4,000 SQUARE CENTIMETERS PER GRAM. CONCRETE FORMED FROM THIS WILL DEVELOPED COMPRESSIVE STRENGTH 125 P.S.I. WITHIN TWO HOURS MORTAR TESTS.