GROUTING METHOD

PROBLEM TO BE SOLVED: To provide a grouting method which achieves high permeability and is excellently used as a liquefaction countermeasure.SOLUTION: In a grouting method to perform permeation grouting in silty and/or sandy ground, a grouting material having a particulate silica concentration of no...

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Main Authors OKADA KAZUNARI, HIHARA AKIRA, ISHIDA HIDEO, YOKOI TSUTOMU, MASUZAWA MITSUYA, SAKAKIBARA TAKANORI
Format Patent
LanguageEnglish
Published 02.10.2014
Subjects
EMBANKMENTS
EXCAVATIONS
FIXED CONSTRUCTIONS
FOUNDATIONS
HYDRAULIC ENGINEERING
SOIL SHIFTING
UNDERGROUND OR UNDERWATER STRUCTURES
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Summary:PROBLEM TO BE SOLVED: To provide a grouting method which achieves high permeability and is excellently used as a liquefaction countermeasure.SOLUTION: In a grouting method to perform permeation grouting in silty and/or sandy ground, a grouting material having a particulate silica concentration of not less than 0.1% and less than 5% and a particulate calcium hydroxide concentration of not less than 0.1% and less than 5% is injected into the ground with: injection pressure not more than 0.5 MPa; an injection rate of not more than 10 litter per minutes; and a pulsation rate of not more than 5%. An improved body constructed by the grouting method has a transverse elasticity modulus of 50 to 1,000 MN/m. Thus, the grouting method can be used as a liquefaction countermeasure.
Bibliography:Application Number: JP20130059218