Abstract:
Resource depletion is a serious concern in civil engineering, and road development is not immune. Because of the large-scale road building, there is a high demand for aggregate, resulting in a lot of blasting, quarrying, crushing, and so on. On the other side, industrial byproducts and locally accessible materials pose environmental and landfill issues, but they may be used in road building. The marshall mix characteristics of hot mix asphalt incorporating sandstone waste as a substitute for fine aggregate was examined in this experimental investigation. In this experimental work, sandstone waste in different percentages including 0%, 25%, 50%, 75% and 100% were used. Several tests were conducted on flexible pavement including los angeles abrasion, aggregate impact value, aggregate crushing test, Shape test and Marshall stability test. Raising the percentage replacement from 0% to75%, marshall stability increases than reduced on increasing sandstone waste. Maximum strength was observed when fine aggregate was substituted with sandstone waste upto 50 to 75 %. It was also observed that at 50% replacement of fine aggregate with sandstone waste fulfilled the whole requirement of DBM layer of pavement according to MORTH Specification and can be used in pavement as an alternative of fine aggregate. It reduces the cost of material and decrease the environmental problem. It can also be used in pavement where traffic load is less.
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