CaO-Al2O3-BASED CLINKER, AND CEMENT ADMIXTURE AND CEMENT COMPOSITION USING THE SAME, AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a CaO-Al₂O₃-based clinker which allows securing sufficient super quick hardening property and pot life even when stored long time, and to provide a cement admixture and a cement composition using the same, and a method for producing the same.;SOLUTION: The CaO-Al₂O₃-based clinker is formed by carbonation in a high temperature atmosphere of 200 to 800°C and comprises 29.9 to 65% of CaO, 34.9 to 70% of Al₂O₃, and 0.1 to 5% of carbonic acid component as CO₂. The cement admixture comprises the clinker, having 25 to 200 parts of gypsum blended into 100 parts of the clinker. The cement composition comprises cement and the cement admixture. The method of producing the CaO-Al₂O₃-based clinker containing the carbonic acid component comprises contacting a CaO-Al₂O₃-based clinker with carbon dioxide in a high temperature atmosphere of 200 to 800°C.;COPYRIGHT: (C)2015,JPO&INPIT