Title:
CIVIL ENGINEERING MATERIAL
Document Type and Number:
Japanese Patent JPH11216447
Kind Code:
A
Abstract:
To provide civil engineering materials recovered from city trash incineration ash and enabling to safely use as a road base material.
A heavy metal fixing agent, preferably phosphoric acid is added to the particles having a 5-40 mm max. particle size, >10 uniformity coefficient and <10 wt.% ignition loss, which are obtained by classifying, separating and drying the city trash incineration ash, and subsequently a second heavy metal fixing agent consisting of ferrous sulfate is added. The ash is dried before the heavy metal fixing agents are added, and is kneaded after the addition.
Inventors:
GIANNI B ARCAINI
GARY M CALLOW
WILLIAM R GIBBS
YASHIRO TAKEKI
HIRAO TAKANORI
ISHIZUKA KAORU
GARY M CALLOW
WILLIAM R GIBBS
YASHIRO TAKEKI
HIRAO TAKANORI
ISHIZUKA KAORU
Application Number:
JP28813598A
Publication Date:
August 10, 1999
Filing Date:
October 09, 1998
Export Citation:
Assignee:
DUOS ENG USA INC
International Classes:
A62D3/00; A62D3/33; B03B9/04; B09B3/00; B09B5/00; C04B18/10; E01C3/00; A62D101/08; A62D101/43; (IPC1-7): B09B3/00; B09B3/00; B09B5/00; C04B18/10
Attorney, Agent or Firm:
Uchiyama Mitsuru