ABSTRACT
The outline of the specimen is shown in Fig. 3. The specimen is a beam type of 800mm in length, 150mm in height and 150mm in width. In the specimen, two steel bars (ø 13mm, round bar) are embedded at a cover depth of 20mm. The two steel bars are welded with steel bar (ø 6mm), therefore they are electrically connected. Also, an electrical lead is connected to these two bars for the electro-chemical measurements. For concrete mixing materials,
