To provide a soil aggregate which is suitable for improving bottom sediment of various water areas including seaweed bed.
An improver system 3 containing a double-shaft stirring blade 5 is held at the tip of a ladder 2 extending from a workboat 1. The improver system 3 is sunk to water bottom, and an aqueous solution containing an aggregating agent and an adsorption carrier carrying a hydroxy metal ion is supplied to the improver system 3 from a first mixer 11 mounted on the workboat 1 and mixed with bottom mud S of the bottom sediment to promote aggregation of the bottom mud S. After the aggregation has moderately progressed, an aqueous solution containing a solidifier is supplied to the improver system 3 from a second mixer 12 mounted on the workboat 1 to promote further aggregation and solidification and replace the bottom sediment with the water-resistant soil aggregate.
KOZAI YASUHIRO
HENMI AKIO
KUBO SHIGERU
NAKAJIMA MICHIO
WAKABAYASHI TOSHIAKI
SHIBATA HIRONORI
HENMI AKIO
JPH11256154A | 1999-09-21 | |||
JPH101670A | 1998-01-06 | |||
JP2003304739A | 2003-10-28 | |||
JP2001081464A | 2001-03-27 | |||
JP2004017023A | 2004-01-22 | |||
JP2000254699A | 2000-09-19 | |||
JP2002167258A | 2002-06-11 | |||
JPH0889126A | 1996-04-09 | |||
JP2000212564A | 2000-08-02 | |||
JPS49114245A | 1974-10-31 | |||
JPS63107611A | 1988-05-12 | |||
JP2001045896A | 2001-02-20 | |||
JP2003251397A | 2003-09-09 |
Miyazaki Yoshio
Kaoru Onozuka
High Masahiro
Toshio Nakamura
Tsutomu Kato
Yusuke Murakoshi
Tomoaki Komiya