A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
GROUND IMPROVEMENT MATERIAL SLURRY, GROUND IMPROVEMENT MATERIAL CURED PRODUCT, AND GROUND IMPROVEMENT METHOD
To provide a ground improvement material slurry that exhibits good permeability when injected into the ground, has a good initial strength-enhancing effect, and can impart a rust-preventing effect on metal members existing in the ground.SOLUTION: The inventive ground improvement material slurry contains calcium aluminate with a vitrification rate of 70% or more, a CaO/Al2O3 molar ratio of 1.0 to 2.7, and an impurity content of 15 mass% or less, gypsum, and cement in water or aqueous solution. In the ground improvement material slurry, the total amount of chlorine contained in the calcium aluminate, gypsum and cement is 20 ppm to 2000 ppm, and the redox potential of the ground improvement material slurry is -0.4 to 0.1 V.SELECTED DRAWING: None
【課題】地盤に注入させた際に良好な浸透性を示し、初期の強度増進効果が良好に得られ、地盤中に存在する金属部材の発錆防止効果を付与できる地盤改良材料スラリーを提供する。【解決手段】ガラス化率が７０％以上、ＣａＯ／Ａｌ２Ｏ３モル比が１．０～２．７、不純物含有量が１５質量％以下であるカルシウムアルミネート、石膏、および、セメントを水又は水溶液中に含有する地盤改良材料スラリーであって、前記カルシウムアルミネートと前記石膏と前記セメントに含まれる塩素の総量が、２０ｐｐｍ～２０００ｐｐｍであり、前記地盤改良材料スラリーの酸化還元電位が、－０．４～０．１Ｖである、地盤改良材料スラリーである。【選択図】なし
GROUND IMPROVEMENT MATERIAL SLURRY, GROUND IMPROVEMENT MATERIAL CURED PRODUCT, AND GROUND IMPROVEMENT METHOD
To provide a ground improvement material slurry that exhibits good permeability when injected into the ground, has a good initial strength-enhancing effect, and can impart a rust-preventing effect on metal members existing in the ground.SOLUTION: The inventive ground improvement material slurry contains calcium aluminate with a vitrification rate of 70% or more, a CaO/Al2O3 molar ratio of 1.0 to 2.7, and an impurity content of 15 mass% or less, gypsum, and cement in water or aqueous solution. In the ground improvement material slurry, the total amount of chlorine contained in the calcium aluminate, gypsum and cement is 20 ppm to 2000 ppm, and the redox potential of the ground improvement material slurry is -0.4 to 0.1 V.SELECTED DRAWING: None
【課題】地盤に注入させた際に良好な浸透性を示し、初期の強度増進効果が良好に得られ、地盤中に存在する金属部材の発錆防止効果を付与できる地盤改良材料スラリーを提供する。【解決手段】ガラス化率が７０％以上、ＣａＯ／Ａｌ２Ｏ３モル比が１．０～２．７、不純物含有量が１５質量％以下であるカルシウムアルミネート、石膏、および、セメントを水又は水溶液中に含有する地盤改良材料スラリーであって、前記カルシウムアルミネートと前記石膏と前記セメントに含まれる塩素の総量が、２０ｐｐｍ～２０００ｐｐｍであり、前記地盤改良材料スラリーの酸化還元電位が、－０．４～０．１Ｖである、地盤改良材料スラリーである。【選択図】なし
GROUND IMPROVEMENT MATERIAL SLURRY, GROUND IMPROVEMENT MATERIAL CURED PRODUCT, AND GROUND IMPROVEMENT METHOD
地盤改良材料スラリー、地盤改良材料硬化物、および地盤改良方法
SAITO MAKOTO (author) / SASAKI TAKASHI (author)
2022-04-11
Patent
Electronic Resource
Japanese
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