CEMENT CURING BODY AND MANUFACTURING METHOD THEREFOR

• Main Authors: HIRAO HIROSHI, KUBOTA OSAMU, AKI TOMOKO
• Format: Patent
• Language: English; Japanese
• Published: 25.08.2016
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; PERFORMING OPERATIONS; REFRACTORIES; SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER; SLAG; TRANSPORTING; TREATMENT OF NATURAL STONE; WORKING CEMENT, CLAY, OR STONE

PROBLEM TO BE SOLVED: To provide a cement curing body capable of largely reducing the total amount of exhausted carbon dioxide by absorbing a large amount of carbon dioxide during curing process even when curing is conducted at ordinary temperature (about 20°C), not at high temperature such as 60°C while containing a powdery material other than Portland cement, especially ones having less exhausted amount of carbon dioxide during manufacturing of a powder than that of Portland cement and small in percentage of reduction of compressive strength with a case that total amount of the powder material consists of Portland cement as reference.SOLUTION: There is provided a cement curing body by carbonization of a curing body of a cement mixture containing (A) a powder for cement mixing containing one or both of mullite and anorthite and a powder cement composition containing Portland cement, (B) water and (C) an aggregate.SELECTED DRAWING: None 【課題】ポルトランドセメント以外の粉末材料（特に、ポルトランドセメントに比べて、粉末の製造時の二酸化炭素の排出量が少ないもの）を含むものの、例えば、６０℃等の高温ではなく、常温（２０℃程度）で養生を行った場合であっても、養生過程において多量の二酸化炭素を吸収することにより、排出される二酸化炭素の総量を大幅に低減することができ、かつ、粉末材料の全量がポルトランドセメントからなる場合を基準としたときに、圧縮強さの低下の割合が小さいセメント質硬化体を提供する。【解決手段】（Ａ）ムライトとアノーサイトのいずれか一方または両方を含むセメント混合用粉末、及び、ポルトランドセメントを含む粉末状セメント組成物、（Ｂ）水、及び、（Ｃ）骨材、を含むセメント混練物の硬化体を、炭酸化してなるセメント質硬化体。【選択図】なし