A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
HYDRAULIC POWDER COMPOSITION
PROBLEM TO BE SOLVED: To provide a hydraulic powder composition capable of suppressing dust emission and reducing elution amount of hexavalent chromium from ground improvement.SOLUTION: There is provided a hydraulic powder component containing (A) a solidification material containing a ground product of cement clinker having hydraulic modulus (H.M.) of 2.00 to 2.10, free lime amount of 0.1 to 1.0 mass%, all chromium content of 200 ppm or more and percentage of all hexavalent chromium in all chromium content of 20 mass% or less and a gypsum with percentage of SOin the solidification material of 3.5 to 15 mass%, (B) one or more kinds of dust emission inhibitor selected from a group consisting of an alcohol compound, a hydration retarder and starches and (C) water.SELECTED DRAWING: None
【課題】発塵が抑制され、また、地盤改良土からの六価クロムの溶出量を低減することができる水硬性粉状組成物を提供する。【解決手段】（Ａ）水硬率（Ｈ．Ｍ．）が２．００〜２．１０、フリーライム量が０．１〜１．０質量％、全クロム量が２００ｐｐｍ以上、及び、全クロム量中の全六価クロムの割合が２０質量％以下であるセメントクリンカーの粉砕物、及び、石膏を含む固化材であって、該固化材中のＳＯ3の割合が３．５〜１５質量％である固化材、（Ｂ）アルコール化合物、水和遅延剤、及びデンプン類からなる群より選ばれる１種以上の発塵抑制材、及び、（Ｃ）水、を含む水硬性粉状組成物。【選択図】なし
HYDRAULIC POWDER COMPOSITION
PROBLEM TO BE SOLVED: To provide a hydraulic powder composition capable of suppressing dust emission and reducing elution amount of hexavalent chromium from ground improvement.SOLUTION: There is provided a hydraulic powder component containing (A) a solidification material containing a ground product of cement clinker having hydraulic modulus (H.M.) of 2.00 to 2.10, free lime amount of 0.1 to 1.0 mass%, all chromium content of 200 ppm or more and percentage of all hexavalent chromium in all chromium content of 20 mass% or less and a gypsum with percentage of SOin the solidification material of 3.5 to 15 mass%, (B) one or more kinds of dust emission inhibitor selected from a group consisting of an alcohol compound, a hydration retarder and starches and (C) water.SELECTED DRAWING: None
【課題】発塵が抑制され、また、地盤改良土からの六価クロムの溶出量を低減することができる水硬性粉状組成物を提供する。【解決手段】（Ａ）水硬率（Ｈ．Ｍ．）が２．００〜２．１０、フリーライム量が０．１〜１．０質量％、全クロム量が２００ｐｐｍ以上、及び、全クロム量中の全六価クロムの割合が２０質量％以下であるセメントクリンカーの粉砕物、及び、石膏を含む固化材であって、該固化材中のＳＯ3の割合が３．５〜１５質量％である固化材、（Ｂ）アルコール化合物、水和遅延剤、及びデンプン類からなる群より選ばれる１種以上の発塵抑制材、及び、（Ｃ）水、を含む水硬性粉状組成物。【選択図】なし
HYDRAULIC POWDER COMPOSITION
水硬性粉状組成物
AMAMOTO YUSAKU (author) / MATSUYAMA YUSUKE (author) / NOZAKI TAKAHITO (author) / MORI KANAKO (author) / SUGIYAMA AKINORI (author)
2016-09-29
Patent
Electronic Resource
Japanese
ADDITIVE COMPOSITION FOR HYDRAULIC COMPOSITION CONTAINING LATENT HYDRAULIC POWDER
| European Patent Office | 2023