Title:
STRENGTH MANAGEMENT METHOD OF BACK FILLING MATERIAL AND METHOD OF BACK FILLING IN GROUND
Document Type and Number:
Japanese Patent JP2018076648
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a strength management method of a back filling material to allow a management to control strength of a back filling material simply and precisely.SOLUTION: The invention is a strength management method for a back filling material composed of mixing water, soil particles, bentonite, and cement. The method comprises: a setting step to set a constant specified in accordance with a type of bentonite; and a determining step to determine a quantity of water W, a quantity of bentonite B and a quantity of cement C, all of which are mixed to acquire a target strength qusing a strength calculation formula embedded with the constant a. For example, the strength calculation formula is shown as q=2.36(C/(W-a*B))-0.23.SELECTED DRAWING: Figure 1
Inventors:
KAWASAKI KENJIRO
FURUGAITO YASUSHI
FURUGAITO YASUSHI
Application Number:
JP2016217019A
Publication Date:
May 17, 2018
Filing Date:
November 07, 2016
Export Citation:
Assignee:
TOKYU KENSETSU KK
International Classes:
E02D3/00; C09K17/02; C09K17/08; C09K17/10; E02D3/12
Attorney, Agent or Firm:
Cleo International Law & Patent Office
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