Design of Cold Recycled Emulsified Asphalt Mixtures Using Portland Cement as A Partial Replacement of Aggregate Mineral Filler
Journal Title: International Journal of Modern Research In Engineering & Management. - Year 2018, Vol 1, Issue 10
Abstract
Cold Recycling is getting popularity in research sector and construction industries because it overcomes all the issues of Hot Mix Asphalt of more consumption of natural resources, high production energy, central plant recycling, effect of greenhouse gases and non-feasibility in colder regions. In this research study, a cold recycled mixture is designed and compared in terms of mechanical and volumetric properties with control hot mix asphalt mixture, using 60% RAP (reclaimed asphalt pavement) aggregates and 40 % virgin aggregates to fulfill gradation requirements. Asphalt emulsion for cold recycled mixtures is used as a binder with varying five contents (4.3%, 4.8%, 5.3%, 5.8% and 6.3%). Also, a modified cold recycled mixture is prepared at optimum emulsion content of control cold recycled mixture by partially replacing conventional aggregate mineral filler with three different contents of Portland cement (2%, 3% and 4%) of total dry mass of aggregates. Marshall mix design procedure was adopted to calculate the optimum (bitumen, emulsion and filler content) for control hot mix asphalt, control cold recycled mixture and modified cold recycled mixtures respectively. Mechanical properties of each of these mixtures were compared with each other and it was found that modified cold recycled mixtures were better than controlled cold recycled mixture and comparable in properties to hot mix asphalt mixtures and Optimum filler content of Portland cement for modified cold recycled mixture was found to be at 4%.
Authors and Affiliations
Engr. Abdul Qudoos Malano
Keywords
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- EP ID EP419953
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