Effect of Waste Cement Dust as Mineral Filler on Marshall Properties of Hot Mix Asphalt
Journal Title: Saudi Journal of Engineering and Technology - Year 2018, Vol 3, Issue 1
Abstract
Abstract:Using cement dust in asphalt mixing can have many environmental advantages. Before widely adapting cement dust in asphalt paving, trial sections and adequate provisions should be provided. By pass cement dust is proposed within this research as an alternative to traditional mineral filler in hot mix asphalt (HMA). The effect of using waste cement dust as mineral filler on the Marshall properties of hot mix asphalt was investigated. The optimum cement dust content was determined. Five asphalt concrete mixtures with various cement dust contents, namely; 0%, 30%, 50%, 70% and 100% by weight of the filler were studied. Laboratory testing has revealed an enhancement in Marshall when cement dust was used. Marshall testing results have indicated an increase in the stability, unit weight and a decrease in the flow, voids ratio and voids in mineral aggregates when the percentage of cement dust content increases. The optimum cement dust ratio was found to be 100% of the used mineral filler. Hence, cement dust can totally replace filler in asphalt paving mixtures. Keywords:Waste Cement Dust, Mineral Filler, Marshall Properties, Hot Mix Asphalt, Waste Materials.
Authors and Affiliations
Sahar AA. Dawood, Zainab
Keywords
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