Comparative Effects Of Ceramic Waste And Coffee Husk Ash Replacement With Crushed Stone Filler In Hot Mix Asphalt

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.