PC GROUT COMPOSITION

To provide a PC grout composition that is more excellent in flowability and has reduced bleeding.SOLUTION: The PC grout composition includes a binding material, (A) a sulfate or a salt thereof having the carbon number of hydrocarbon groups of 12 to 22 and an average addition mole number of alkylene...

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Bibliographische Detailangaben
Hauptverfasser: YOSHIZAWA CHIAKI, OKAUCHI NOBUAKI, WATASE HIROSHI, NISHISU MINORU, SUZUKI KENICHI
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a PC grout composition that is more excellent in flowability and has reduced bleeding.SOLUTION: The PC grout composition includes a binding material, (A) a sulfate or a salt thereof having the carbon number of hydrocarbon groups of 12 to 22 and an average addition mole number of alkylene oxide of more than 0 to 25 (hereinafter referred to as component (A)), (B) a fatty acid alkanolamide having the carbon number of fatty acid parts of 10 to 22 (hereinafter referred to as component (B)) and water in which the binding material includes 30 mass% to 60 mass% of (P1) cement, 35 mass% to 60 mass% of (P2) blast furnace slag fine powder, 1 mass% to 6 mass% of (P3) at least one kind selected from gypsum dihydrate and anhydrous gypsum as CaSOand 2 mass% to 15 mass% of (P4) at least one kind selected from fly ash, silica fume and limestone fine powder; and the total content of the component (A) and the component (B) based on water is 0.3 mass% to 5.0 mass%.SELECTED DRAWING: None 【課題】より流動性に優れ、かつブリーディングの少ないPCグラウト組成物を提供する。【解決手段】結合材と、(A)炭化水素基の炭素数が12以上22以下であり、アルキレンオキサイドの平均付加モル数が0超25以下である、硫酸エステル又はその塩(以下、(A)成分という)と、(B)脂肪酸部分の炭素数が10以上22以下である、脂肪酸アルカノールアミド(以下、(B)成分という)と、水とを含むPCグラウト組成物であって、結合材が、(P1)セメントを30質量%以上60質量%以下、(P2)高炉スラグ微粉末を35質量%以上60質量%以下、(P3)二水石膏及び無水石膏から選ばれる一種以上をCaSO4として1質量%以上6質量%以下、並びに(P4)フライアッシュ、シリカフューム及び石灰石微粉末から選ばれる一種以上を2質量%以上15質量%以下含み、水に対する(A)成分と(B)成分の合計含有量が0.3質量%以上5.0質量%以下である、PCグラウト組成物。【選択図】なし