Using bleeding water gathered by pressurized and filtered of diluted concrete sample with purified water, some methods were suitable to test for chloride concentration in water of fresh concrete with low-water binder ratio and with few bleeding water. As a result, the following conclusions were obtained. 1) In case of high-strength concrete, which W/B is 16% and 18%, using diluted concrete sample by purified water 50cc against fresh concrete 3kg, it is possible to test in about 1 5 minutes for chloride concentration in water of fresh concrete with low-water binder ratio. 2) It is preferable to gather a quantity of filtered water necessary for examine within 4 hours, while the change of density is small. 3) Among the methods by JASS5T-502, Coulometric titration and Mohr's method may have applicability to test for chloride concentration in water of fresh concrete with low water binder ratio, with dilution method. It is possible to examine for chloride concentration in water of fresh concrete with low water binder ratio at the construction site.
