METHOD FOR PRODUCING CURED BODY

• Main Authors: TAKANO MIKU, HYODO HIKOTSUGU, HIRAO HIROSHI, NOGUCHI TAKAFUMI, MARUYAMA IPPEI, HAYASHI KENSUKE, KANEMATSU MANABU
• Format: Patent
• Language: English; Japanese
• Published: 02.10.2023
• 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

To provide a method for producing a cured body capable of producing a cured body having sufficient strength without requiring high molding pressure.SOLUTION: There is provided a method for producing a cured body which comprises: a first step of producing a compact by pressurizing and molding a composition containing CaO, SiO2 and Al2O3 and having a carbonation degree of 70 mass% or less; a second step of bringing the compact prepared in the first step into contact with a second mixed liquid containing a sulfate and a hydrogen carbonate prepared by blowing carbon dioxide gas into a first mixed liquid containing a material containing a Group 2 element and a sulfate; and a third step of drying the compact after the second step.SELECTED DRAWING: None 【課題】高い成形圧力を要せずとも、十分な強度を有する硬化体を製造可能な硬化体の製造方法を提供すること。【解決手段】ＣａＯ、ＳｉＯ2及びＡｌ2Ｏ3を含む組成物であって、炭酸化度が７０質量％以下である組成物を加圧成形して成形体を作製する第１の工程と、第２族元素含有材料及び硫酸塩を含む第１の混合液に炭酸ガスを吹き込み調製した硫酸塩及び炭酸水素塩を含む第２の混合液と、第１の工程で作製した成形体とを接触させる第２の工程と、第２の工程後の成形体を乾燥する第３の工程を含む、硬化体の製造方法。【選択図】なし