Experimental Study of using Waste Glass as additives in Asphalt Concrete Mixtures
Keywords:Waste glass, Pavement Construction, Marshall Stiffness, Compressive strength, Tensile strength
In road engineering, it is important to develop paving technology and improving asphalt pavement efficiency in terms of increasing their service life and reducing the damage caused by rutting, fatigue and thermal cracks. Waste glass can be used as asphalt modifiers, which can be add in certain properties to the asphalt mixture in ordered to modify some of the properties of the mechanical properties of asphalt concrete mixtures. The waste glass that is crushed can be used as a portion of fine aggregate in asphalt concrete mixtures. The aim of this research is to study the effect of using waste glass as asphalt concrete mixtures additives. From the review different portion of waste, glass can be used as asphalt concrete mixtures additives up to 15%. In this research fine natural aggregate replaced with crushed Waste glass in deferent percentage namely 6%, 9%, 12%, 15% and 18%. The mechanical properties of the glass-asphalt were evaluated using Marshall Stiffness, compressive strength and indirect tensile strength. Based on the results, it was found that 15% of crushed Waste glass improves the mechanical properties of asphalt concrete mixtures in the terms of Marshall Stiffness and compressive strength. On the other hand, no improvement in the tensile strength was noticed.
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