Field Based Experimental Investigation of Road Dust Suppression Capacity of Molasses on Gravel Road

Abstract

Dust generated by shearing forces created at the interface between the surface and vehicle tires produce dust on unpaved surfaces. Fugitive dust coming from vehicle traffic on unpaved roads and runways can have significant impacts on safety, health, quality of life, and the cost of maintenance. Managing dust provides a means of reducing these impacts. Molasses using act agglomerating the fine particles adhering/binding the surface particles together, or increasing the density of the road surface material. The relevant laboratory tests have been; Grain size analysis test, fine, Atterberg limit test, and shrinkage product. R2 materials good performance then Proctor test OMC & MDD, resulted 11.7%,1.84 and CBR test different molasses rate mix soil 0,18, 36, 54, 73 and 91 mile litres per meter squared and to find strength of soil after 24 hours curing time. Rate of molasses increased on the surface of un-soaked soil increased load bearing capacity but 92 ml/m2 decreased. It was also observed that the 91 ml/m2 of the molasses rate increasing the curing duration led to increased CBR value .Therefore the peak CBR value was selected as optimum molasses rate 54,73 and 91 mile litres per meter squared for field test. Within a field was done, three different of 3 by 10 meter area prepared and applied molasses 3,4 and 5 liters per square meter and closed the road 24 hours to curing. Dust level measured using comparative by photo the measuring of fugitive dust produced 4 times minimized dust levels after 24 hour applied all rate molasses and At the rate 5 liters per square meter had the surface crust thickness greater than the rate 4 and 3 liters per square meter but the amount of molasses on the surface road excess compare to the two rate evidence the roads open to traffic surface molasses was picked up by vehicle tires. Total traffic volume 385 and 111 heavy weight vehicle were traveled to treated surface and two rainfall occurrences in our study on 11, 14 June washed a part of molasses from the road surface. Rate 3 L/M2 thin surface crusts results which is easily disturbed by traffic and rainfall allowing the underlying material to produce dust on the road surface compared to 4 L/M2 at the end of the 30stdays. Optimum amount for controlling the dust was 4 liters per square meter but molasses at the initial stage of application was highly efficient but as time progressed the dust emission increased