Title:
METHOD FOR FILLING BENTONITE FORMED BODY
Document Type and Number:
Japanese Patent JP2017136747
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for filling bentonite formed body in which a higher filling density can be realized.SOLUTION: The method for filling bentonite formed body is a method in which a bentonite powder is added with water and the mixture is kneaded, and compression molded in a reduced pressure atmosphere in a vacuum state of 1000 Pa or less to produce a wet bentonite solid body, rounding the same into an approximately spherical shape to form a wet pellet and drying-and-shrinking the same to produce a high density and approximately spherical shape bentonite formed body, and filling the produced bentonite formed body into a predetermined space, and in which the bentonite formed body comprises approximately spherical shape pellets of 3 kinds of large, medium and small particle sizes, and the particle size ratio of large particle size pellet to medium particle size pellet and the particle size ratio of medium particle size pellet to small particle size pellet are 10.5 folds or more.SELECTED DRAWING: Figure 2-2
Inventors:
ISHII TAKU
Application Number:
JP2016019155A
Publication Date:
August 10, 2017
Filing Date:
February 03, 2016
Export Citation:
Assignee:
SHIMIZU CONSTRUCTION CO LTD
International Classes:
B28B3/02; B28B11/24; C04B35/622; G21F9/36
Attorney, Agent or Firm:
Sakai International Patent Office