EFFECT OF SAWDUST AS PARTIAL REPLACEMENT OF SAND IN CONCRETE

  • DABAN A. MUHEDIN
  • SANGAR J. QADIR
  • MADEH I. HAMAKAREEM
  • AHMED J. HAMA RASH
Keywords: Sawdust; fine aggregate; compressive strength; tensile strength; flexural strength

Abstract

In the past, river sand was main choice for fine aggregate but due to nonscientific methods for
excavation from river beds it has been depleted and leads to environmental concern. Most of the waste
sawdust are being dumped into landfill areas which is undesirable because it has a negative impact on
environment. This research investigated the effects of sawdust as partial replacement for fine aggregate in
concrete structures. Compressive, tensile and flexural strength were investigated and evaluated at 7, 14
and 28 days. In this study four concrete mixes were prepared, first one was control mix and in other three
mixes sand was replaced by the following percentages 5%, 10% and 15%. Results shows that by
increasing the amount of sawdust in concrete samples; compressive, tensile and flexural strength will
reduce. Compressive strength for 5% of sawdust replacement at 28 days was 26.2 MPa, while for 10% was
20.1 MPa and for 15% was 15.9 MPa. The test results, indicated that 5% of sawdust can be used in
concrete structures.

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Published
2021-01-06
How to Cite
MUHEDIN, D. A., QADIR, S. J., HAMAKAREEM, M. I., & RASH, A. J. H. (2021). EFFECT OF SAWDUST AS PARTIAL REPLACEMENT OF SAND IN CONCRETE. Journal of Duhok University, 23(2), 658-664. Retrieved from https://journal.uod.ac/index.php/uodjournal/article/view/964