Title:
CAPILLARY BARRIER STRUCTURE
Document Type and Number:
Japanese Patent JP2020011169
Kind Code:
A
Abstract:
To provide a capillary barrier structure where the impervious performance of a capillary tube impervious layer formed on the boundary surface of two layers becomes high as compared with a conventional one, impervious function by the capillary tube impervious layer can be sustained for a long term without changing gap difference between the two layers with time and on-site construction is easily performed.SOLUTION: In a capillary barrier structure,: a fine grain layer 40 being an upper layer is composed of the fine grains 41 of a natural material; meanwhile, a lower layer is composed of a coarse grain replacement layer 30 made of a coarse grain replacement structural body 20; the coarse grain replacement structural body 20 is provided with a pressure resistant mat 21 with a porous structure having a gap layer 23 inside and an air-permeable sheet 25 regulating the permeation of the fine grains 41; a gap to the pressure resistant mat 21 is formed to be larger than a gap to the fine grain layer 40; and the air-permeable sheet 25 is inserted into a boundary surface between the pressure resistant mat 21 and the fine grain layer 40.SELECTED DRAWING: Figure 1
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Inventors:
TATSUTA NAOKI
KAKIUCHI HIROSHI
KAKIUCHI HIROSHI
Application Number:
JP2018133280A
Publication Date:
January 23, 2020
Filing Date:
July 13, 2018
Export Citation:
Assignee:
UNIV TOYAMA
ACCUTECH INC
ACCUTECH INC
International Classes:
B09B1/00
Attorney, Agent or Firm:
Sakuo Yamaguchi
Nobuyuki Oshima
Shinjiro Yamaguchi
Nobuyuki Oshima
Shinjiro Yamaguchi