Study of Flexural Strength On Concrete Bundled Bars Beams E Walujodjati (a*), JA Tjondro (b), S Permana (a), GJ Johari (a)
a) Department of Civil Engineering, Sekolah Tinggi Teknologi Garut, Jl. Mayor Syamsu 1, Garut, Indonesia
*eko.walujodjati[at]sttgarut.ac.id
b) Department of Civil Engineering, Parahyangan Catholic University, Bandung, Jl. Ciumbuleuit, Bandung, Indonesia
Abstract
Reinforced concrete beams as structural elements that are often found, are elements that are quite large in their role in bearing loads, especially bending loads. In the design of reinforced concrete beams, the number of reinforcement can be increased or reduced which will cause tensile collapse, compressive collapse and balanced collapse. Judging from the function of the reinforcement as a bearer of tensile force, it is possible if the reinforced concrete beams are made with a different number and area of reinforcement. Reinforcement bundles are used if there is a cross-sectional dimension limitation without the distance between the reinforcement conditions being met. Beams with 2 reinforcement bundles are made to see the flexural capacity obtained. With the dimensions of the beam 150 mm x 200 mm x 1050 mm, a bundle of 2 reinforcement with a diameter of 10 mm is mounted on the tensile section of reinforced concrete beams. With a four-point bending test a nominal bending moment is obtained. Single-section square cross section analysis with cross-sectional area obtained using the equivalent diameter of the reinforcement bundle compared to the results of the flexural test. The bending moment capacity between experiment and analysis obtained the appropriate results. But the collapse at the resulting peak load is not the expected bending collapse. It is estimated that the value of the bending capacity of the two reinforcement bundles is still large so that the bending collapse has not been reached.
Keywords: Bending Moments; Flexural Collapse; Two Bars on Bundle Bars
