SHEAR CAPACITY OF THE COMPOSITE STYROFOAM FILLED REINFORCED CONCRETE BEAMS

  • Rudy Djamaluddin Hasanuddin University, Makassar, Indonesia

Abstract

Concrete structural elements that work optimally resist bending is part of the outermost fibers on the compression side while the concrete on the tensile side is negligible. Therefore, it is understandable that compression section of concrete beam should be optimized while the tensile section should be minimized. This may cause the reducing of the self-weight of the concrete structures as well as the using of the concrete materials may be reduced. As a scientific effort to chieve the above consideration, a series of study is being done in reducing the volume of tensile section by filling with the styrofoam grains. The beam is named as the composite styrofoam reinforced concrete beams (CSRC). In order to clarify the shear capacity of CSRC beams, an experimental study of flexural test was carry out. The specimens are beams with a length of 1500 mm, width of 150 mm and 320 mm high and they composed by a normal concrete on the upper half of height for compression section and a styrofoam filled concrete (SFC) with the styrofoam content of 30%, 40%,   and 50%, respectively on the lower half of height for tension section. The beams were supported by a simple support and it was subjected to monotonic two loading point with a/d of 1.5 to ensure the shear failure on the beam. The results of this study showed that shear capacity of CSRC beams with styrofoam content of  30%,  40%, and  50%  decreased for  21.72%,  26.74%, and  29.26% respectively at the first diagonal crack and it decreased for 22.64%, 28.95%, 33.86% respectively at the ultimate load. The increasing of the styrofoam content on the tension section of beam caused the number and the length of cracks increased.

Published
2011-08-01
How to Cite
DJAMALUDDIN, Rudy. SHEAR CAPACITY OF THE COMPOSITE STYROFOAM FILLED REINFORCED CONCRETE BEAMS. EACEF - International Conference of Civil Engineering, [S.l.], v. 1, p. 025, aug. 2011. Available at: <http://proceeding.eacef.com/ojs/index.php/EACEF/article/view/371>. Date accessed: 19 may 2024.
Section
Group of Structural and Construction Engineering