Title:
MANAGEMENT METHOD OF SECONDARY SLIME TREATMENT
Document Type and Number:
Japanese Patent JP2017089158
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a management method of secondary slime treatment without depositing slime on a hole bottom, even if a stable liquid after finishing secondary slime treatment is stood still, in a method for executing a cast-in-place concrete structure by placing concrete in a drilling hole filled with the stable liquid.SOLUTION: In a management method of secondary slime treatment in a method for constructing a cast-in-place concrete structure by placing concrete in a drilling hole by executing primary slime treatment and the secondary slime treatment by the drilling hole filled with a stable liquid, a process of confirming that the sand content ratio of the stable liquid in the hole bottom vicinity becomes a management reference value or less determined with every construction site by repeatedly measuring the sand content ratio of the stable liquid in the hole bottom vicinity with every constant time and a process of confirming the fact of becoming a numeric value in the same as or approximate to the sand content ratio of the stable liquid in the hole bottom vicinity measured in the same time by measuring the sand content ratio of the stable liquid in at least the hole port vicinity, are executed when executing the secondary slime treatment, and the secondary slime treatment is continued up to finishing confirmation of both processes.SELECTED DRAWING: Figure 2
Inventors:
KITA NAOYUKI
ARAKAWA MAKOTO
ARAKAWA MAKOTO
Application Number:
JP2015217677A
Publication Date:
May 25, 2017
Filing Date:
November 05, 2015
Export Citation:
Assignee:
OHBAYASHI CORP
International Classes:
E02D15/06; E02D5/18; E02D5/20; E02D5/34
Domestic Patent References:
| JPH06316929A | 1994-11-15 | |||
| JPS58202809A | 1983-11-26 | |||
| JP2012154821A | 2012-08-16 | |||
| JPH0416620A | 1992-01-21 |
Foreign References:
| US4180350A | 1979-12-25 | |||
| CN103031848A | 2013-04-10 |
Attorney, Agent or Firm:
Isshiki International Patent Service Corporation