Analysis of Mechanical Characteristics of Plain and Deep Reinforced ...Ø10 mm Through Tensile Test and Bend Test
Abstract
Reinforcing steel is the main component in reinforced concrete structures that functions to withstand tensile forces, control cracks, and ensure structural ductility. Plain rebar and 10 mm diameter deformed rebar are the most widely used in residential construction in Indonesia, but studies comparing them through two testing methods are still limited. This study aims to compare the mechanical characteristics of plain rebar Ø10 mm and D10 mm deformed rebar based on tensile and bending tests as a basis for selecting residential construction materials in Jakarta. The method used is quantitative with a laboratory experimental approach. Twelve specimens were tested at the Civil Engineering Laboratory of Esa Unggul University, each with three tensile test specimens and three bending tests per type of reinforcement, referring to ASTM E8/E8M, ASTM E290, and SNI 2052:2017. The tensile test results showed that plain rebar had an average breaking strength of 516.33 MPa and a yield strength of 375.33 MPa, while the deformed rebar had 511.67 MPa and 360.00 MPa. In the bending test, the bending strength of both was almost equal (848.33 MPa and 848.00 MPa), but the energy absorption of the deformed rebar was higher (43.15 Joules compared to 41.38 Joules) and all specimens did not crack or break. The shape of the reinforcement surface was proven to have no significant effect on strength, but rather on the ability of plastic deformation, so that deformed rebar is still recommended as the main reinforcement.
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