| Title |
An Experimental Study on the Distribution of Chloride-Ion Content near the Steel-Bar in Hardened Concrete |
| Abstract |
This study is on the distribution rate of chloride-ion content near the reinforced steel-bar in the hardended concrete specimen.The method of experiment is for measuring with the concrete specimen arrayed steel-bar which were made from of a chlorine water in the laboratory two years ago.The mixing design of concrete is various according to the W/Cratio and to adding and admixture or not. The result is following.1.Concerning the ratio of the chloride-ion content in each part by 5-10mm distance from the steel-bar surface to the average content of specimen, it is 135.17% in 0-5mm, 86.25% in 5-15mm, 87.03% in 15-25mm, 95.00% in 25-35mm, 111.60% in 35-45mm(the concrete surface).2.According to the increasing of w/c ratio, in the part of 0-5mm, the ratio of each part to the average chloride-ion content is 141.75% in W/C 45%, 130.53% in W/C 55% and 133.23% in W/C 65%. In case of using and admixture for the concrete mixing, the ratio of 0-5mm part to the average chloride-ion content is 12.59% lower than no using. |