Title:
METHOD AND INSTRUMENT FOR MEASURING WATER-CEMENT RATIO
Document Type and Number:
Japanese Patent JP2003114189
Kind Code:
A
Abstract:
To provide a method and instrument for measuring water-cement ratio by which the water-cement ratio of an unset cement-based material can be measured quickly and accurately at a construction site.
In this method, a filtrate is extracted from fresh concrete which is the unset cement-based material and the concentration of chromium contained in the infiltrate is measured at the construction site (step 101). In addition, the correlation between the concentration of the chromium contained in the filtrate and the water-cement ratio of the fresh concrete is also found (step 102). Then the water-cement ratio is evaluated by applying the concentration of the chromium to the found correlation (step 103).
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Inventors:
SAITO YUJI
Application Number:
JP2001310363A
Publication Date:
April 18, 2003
Filing Date:
October 05, 2001
Export Citation:
Assignee:
OHBAYASHI CORP
International Classes:
G01N33/38; B28C7/04; G01N21/27; G01N21/33; (IPC1-7): G01N21/33; B28C7/04; G01N21/27; G01N33/38
Attorney, Agent or Firm:
Satoshi Hisataka
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