Abstract:
Due to the fact that urbanization is a relatively recent phenomenon, some cities have been
built far from the sources of building materials like wood, sand, stone, and cement. This
problem is particularly acute in developing nations at the moment. Knowing the engineering
properties of locally accessible materials and enhancing them may be an alternative option
rather than only depending on standard materials like concrete.
This study examined how fired brick waste as a partially substituted fine aggregate affects
workability, mechanical properties, water absorption, and volume of void in C-25-grade
concrete. Control and four different concrete mixes were prepared to contain 5%, 10%, 15%,
and 20% fired brick waste replaced with sand. Then the workability and density of concrete
decrease when the percentage of brick waste is increased.
The test results indicated that the compressive strength of concrete increased by 5.66% and
5.4% when brick waste was used as a partial replacement for fine aggregate at 5% and 10%,
respectively, but decreased by 17.71% and 24.65% at 15% and 20%, respectively, compared
to the control mix at 28 days. Likewise, the split tensile strength test showed an increase in
strength at 6.8% and 13.6% for 5% and 10% replacements, respectively, but a decrease at
15% and 20% by 6.52% and 11.9%. Additionally, the concrete's flexural strength increased
by 0.29% and 6.74% at 5% and 10% replacements, respectively, but decreased by 9.9% and
19.37% at 15% and 20%. Finally, the water absorption and volume of voids of 10% brick
waste replacement by river sand were lower than the control concrete by 0.072% and
1.319%, respectively.
This study found that all concrete qualities performed better when fired brick waste from
frustale brick production area where replaced by river sand up to 10%.
