Abstract:
The Continual increases in economic escalation, waste disposal problem and deficiency
in availability of construction materials have opened the chance to utilize waste
materials. The upkeep and easily use of natural resources as well as the intention of
waste material utilization are also another current issues of our planet. The agricultural,
manufacturing and construction industries are sensitive and midst of massive waste
production sectors. Thus, this study will expand the mindfulness about the present issues
of materials waste reuse and utilization in order to reduce the environmental pollution.
Meantime it improves the shortages of materials during construction besides of cost
minimization especially for the road construction.
The partial replacement of crushed stone dust (CSD) was done with Ceramic waste
powder (CWP) and Coffee husk ash (CHA) at replacement percent of 0, 25, 50, 75 and
100 % and 1.5, 3, 4.5, 6 and 7.5% by the mass of CSD respectively. And these
replacements were conducted for the best fit selected 4% filler content (A4 gradation) at
its corresponding 5.33% optimum binder content. Stability, flow and density-void
analysis were determined after these samples were subjected to Marshall Test. The
Marshall Properties of control mix design at 4% filler content were 9.34 kN, 3.15 mm,
2.325 g/cm
3
, 4%, 15.84% and 74.5% for stability, flow, bulk specific gravity, air void,
VMA and VFA respectively.
For this study the total of 93 specimens were prepared including tensile strength ratio
(TSR) test. Seventy five (75) of these specimens were done for Marshall Test. And out of
these 45 specimens were conducted for determining OBC while 30 specimens were
performed for partial replacement and 18 rests were conducted for TSR test.
The result finding shows that CHA can be used as filler in HMA at 4.5% by weight of
CSD. And also it indicates that CWP can be used 100% as alternative filler material at
4% CSD for both materials. And the TSR values of the study are 80.91, 84.17 and
87.04% for CSD-CWP, CSD and CSD-CHA mixes respectively, that are in good
performance ranges. At the end, the study recommends the utilization of Coffee husk ash
and ceramic waste powder combined with CSD as filler in HMA.
