GEOPOLYMER COMPOSITION AND CURED GEOPOLYMER

• Main Authors: IKEO YOSAKU, OSUGA FUMIAKI, MOTOMURA SUSUMU
• Format: Patent
• Language: English; Japanese
• Published: 28.12.2022
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; REFRACTORIES; SLAG; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF NATURAL STONE

To provide a geopolymer composition that gives a cured product having small drying shrinkage strain, and a cured geopolymer having small drying shrinkage strain.SOLUTION: A geopolymer composition contains an active filler, an aqueous alkali solution containing silicate, and a shrinkage reducer. The aqueous alkali solution containing silicate satisfies a requirement (1): 1.2≤A1/A2≤2.0, where A1 is the amount of substance of SiO2 (mol) when silicon contained in silicate is expressed by the formula SiO2, and A2 is the amount of substance of M2O (mol) when all the alkali metals M contained in the aqueous alkali solution containing silicate form M2O.SELECTED DRAWING: None 【課題】得られる硬化体の乾燥収縮ひずみが小さいジオポリマー組成物と、乾燥収縮ひずみが小さいジオポリマー硬化体とを提供すること。【解決手段】ジオポリマー組成物は、活性フィラーと、珪酸塩を含むアルカリ溶液と、収縮低減剤と、を含み、珪酸塩を含むアルカリ溶液が要件（１）を満足する。要件（１）：１．２≦Ａ１／Ａ２≦２．０。Ａ１は、珪酸塩に含まれる珪素を組成式ＳｉＯ２で表したときのＳｉＯ２の物質量（ｍｏｌ）であり、Ａ２は、珪酸塩を含むアルカリ溶液に含まれる全アルカリ金属ＭがＭ２Ｏを形成したときのＭ２Ｏの物質量（ｍｏｌ）である。【選択図】なし