Title:
エトリンガイトの許容生成量の推定方法及び硫黄の許容含有量の決定方法
Document Type and Number:
Japanese Patent JP6866685
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve strength of a roadbed material, while avoiding protrusion of a road surface by the expansion of the roadbed material, by restraining cost and labor low.SOLUTION: In an estimation method of an allowable generation quantity of ettringite generated in a roadbed material, the estimation method of the allowable generation quantity of the ettringite is provided by including a step of calculating internal stress causable on a roadbed when restricting expansion deformation of the roadbed formed of a roadbed material on the basis of the relationship between an ettringite generation quantity in the roadbed material and an expansion coefficient in an unrestricted state of the roadbed material and the relationship between an elastic modulus of the roadbed material and the ettringite generation quantity and a step of estimating the allowable generation quantity of the ettringite on the basis of a comparison result of compressive strength of the roadbed material and the calculated internal stress.SELECTED DRAWING: Figure 7
Inventors:
Haruhiko Shinozaki
Michihiro Aimoto
Michihiro Aimoto
Application Number:
JP2017035210A
Publication Date:
April 28, 2021
Filing Date:
February 27, 2017
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
E01C7/04; C04B5/00; C21B3/04
Domestic Patent References:
| JP2011094302A | ||||
| JP2016204852A | ||||
| JP2009281841A | ||||
| JP2014196218A | ||||
| JP2003509322A |
Attorney, Agent or Firm:
Sumio Tanai
Mitsuo Teramoto
Tomoo Katsumata
Hiroshi Yamaguchi
Mitsuo Teramoto
Tomoo Katsumata
Hiroshi Yamaguchi