EXTRUSION MOLDING HYDRAULIC COMPOSITION

• Main Authors: SASHIHARA YOSHIAKI, SAGAWA KEIICHIRO
• Format: Patent
• Language: English; Japanese
• Published: 30.05.2024
• 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 an extrusion molding hydraulic composition having excellent workability during extrusion molding even when porous low quality fly ash having much unburnt carbon is used.SOLUTION: There is provided an extrusion molding hydraulic composition which comprises the following component (A), cement, fly ash having a BET specific surface area of 0.5 m3/g or more and less than 12.0 m3/g and an ignition loss of 1% or more and 10% or less, and water. Component (A): a copolymer comprising a monomer (1a) represented by the general formula (1a) and a monomer (2a) represented by the general formula (2a) as constituent monomers, in which the ratio of monomer (2a) in the total constituent monomers is 15 mass% or more and 35 mass% or less and the weight average molecular weight is 40000 or more and 80000 or less.SELECTED DRAWING: None 【課題】未燃カーボンが多く、多孔質である低品質なフライアッシュを使用した場合においても、押出成形する際の作業性に優れる、押出成形水硬性組成物を提供する。【解決手段】下記（Ａ）成分、セメント、ＢＥＴ比表面積が０．５ｍ３／ｇ以上１２．０ｍ３／ｇ未満、且つ強熱減量が１％以上１０％以下であるフライアッシュ、及び水を含有する、押出成形水硬性組成物。（Ａ）成分：一般式（１ａ）で示される単量体（１ａ）と、一般式（２ａ）で示される単量体（２ａ）とを構成単量体として含み、全構成単量体中の単量体（２ａ）の割合が、１５質量％以上３５質量％以下であり、重量平均分子量が４００００以上８００００以下である、共重合体【選択図】なし