Abstract
The Arab Ship Building and Repair Yard Company (ASRY) in Bahrain generates approximately 6000 tons per year of solid waste. The waste is a spent copper grit used for sand blasting in the cleaning operations of tankers in the dock yard. This study investigates the possibility of recycling the waste as a fine aggregate in the road construction industry. Asphalt mixes were prepared with five different grit:sand ratios. The Marshall test method was used to evaluate the mix-design. Parameters studied included Marshall stability (kN), Marshall flow (mm), Marshall quotient (kN/mm), voids in the mix (%), voids in the mineral aggregate (%) and the voids filled with bitumen (%). The results confirmed that copper grit waste can be utilized as a substitute for normal send in asphalt mixes used in Bahrain.
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