KASSAHUN ADMASSU (DR.-ING)
Where confirmatory results are required tests are conducted on specified samples by accredited material laboratories according to some accepted practices/procedures to get more information on the chemical, mechanical and technological properties of concrete reinforcement steel bars. The mentioned properties impart a unique characteristic to each type and grade of steel. From the point of view of design and analysis the mechanical properties at yield and ultimate loads coupled with elongation at rupture are determined from tests to provide ascertained technical information to the designer as well as the analyst. In here, a review of the accumulated steel reinforcement bar test results is undertaken to see the trend of this particular material supply from the point of view of decisive technical requirements. The review covers randomly picked test result report files of fourteen years in a row. Based on the finding there of remarks, comments and suggestions will be forwarded to create awareness regarding the short coming sneaking in the construction industry through the improper use of reinforcement bar.