Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
TUNNEL SEGMENT AND METHOD FOR PRODUCING THE SAME
Document Type and Number:
Japanese Patent JP2017095920
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a tunnel segment composed of material having high compression strength.SOLUTION: A tunnel segment 2 has a cured body of a cement composition that has cement, silica fume with a BET specific surface of 15-25 m/g, inorganic powder with a 50% volume cumulative particle diameter of 0.8-5 μm, aggregate with a maximum particle diameter of 1.2 mm or less, high-performance water-reducing agent, antifoaming agent and water, and in 100 vol.% of the total content of cement, silica fume and inorganic powder, the percentage of cement is 55-65 vol.%, the percentage of silica fume is 5-25 vol.%, and the percentage of inorganic powder is 15-35 vol.%.SELECTED DRAWING: Figure 1

Inventors:
ICHIKAWA KATSUTOSHI
Application Number:
JP2015227434A
Publication Date:
June 01, 2017
Filing Date:
November 20, 2015
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
TAIHEIYO CEMENT CORP
International Classes:
E21D11/08; B28B11/24; C04B7/02; C04B14/06; C04B14/48; C04B18/14; C04B20/00; C04B24/26; C04B28/02; C04B40/02
Attorney, Agent or Firm:
Naoyuki Koda
Shuichi Kitamura
Toshiya Murachi