Title:
再利用材料および混合機械
Document Type and Number:
Japanese Patent JP2004504518
Kind Code:
A
Abstract:
Site-won spoil from an excavation which is a predominantly non-granular cohesive material can be converted into a material suitable for immediate use as a backfill material by a process of mechanically mixing the spoil with between 0 and 30% by weight or volume of added granular material and between 1 and 10% by weight or volume of a powder material comprising 1-5% lime or with the addition of 1-5% cement and/or 1-5% pulverized fly ash. The process works well with clay soils and the range of suitable spoil can be extended by adding cement to the powder material. The proportions in the mixture are chosen in dependence on the clay and moisture content of the spoil. A machine which can be set to mix the ingredients and water in the correct proportions on site is also described.
Inventors:
Frank, Owen
Application Number:
JP2002511905A
Publication Date:
February 12, 2004
Filing Date:
July 09, 2001
Export Citation:
Assignee:
Keynes Limited
International Classes:
B09B3/00; E01C7/10; E02F5/22; E02F7/00; (IPC1-7): E02F7/00; B09B3/00; E01C7/10
Attorney, Agent or Firm:
Hidesaku Yamamoto
Takaaki Yasumura
Natsuki Morishita
Takaaki Yasumura
Natsuki Morishita