Title:
ROADBED MATERIAL FOR ASPHALT PAVEMENT INCLUDING GRANULATION OBJECT OF GYPSUM BOARD WASTE
Document Type and Number:
Japanese Patent JP2014177795
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a roadbed material for asphalt pavement including recycling concrete (RC) 40 of 80-90 wt.% and a granulation object manufactured from gypsum board waste of 10-20 wt.%.SOLUTION: The granulation object 24 of the roadbed material is manufactured by a process of providing a crushed material by crushing the gypsum board waste, a process of removing a paper component from the crushed material, a mixing process of forming a mixture by adding a blast furnace cement B kind, water and a predetermined additive to the crushed material of removing the paper component and a granulation process of forming the granulation object 24 by granulating-processing the mixture, and in its mixing process, alkali for setting pH to 8 or more and ferrous iron being the iron content having reduction performance, are added as the predetermined additive, and are mixed under an environment in which oxidation-reduction potential is negative electric potential (a reduction atmosphere).
Inventors:
TESHIGAWARA KAZUNORI
SUGAI HIROSHI
SUGAI HIROSHI
Application Number:
JP2013051663A
Publication Date:
September 25, 2014
Filing Date:
March 14, 2013
Export Citation:
Assignee:
KEIWA KOGYO KK
International Classes:
E01C3/02; B09B3/00; B09B5/00; C04B18/16; C04B22/06; C04B22/14; C04B28/08
Attorney, Agent or Firm:
Fumio Koike