BITS Faculty Publications
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Item Impact analysis of laterally distributed truck wheel loads on pavement performance of multilane highway using strip-based approach(Springer, 2025-03) Kakade, Vijay B.The lateral distribution of truck wheel loads is a natural phenomenon observed on multi-lane roads, as not all the vehicles travelling along a road are using the same wheel path. The lateral distribution of wheel loads is a critical concern from a pavement design point of view as it signifies how the traffic loads are distributed on multi-lane roads. Thus, there is a need to evaluate the exact position of laterally distributed vehicles on multi-lane roads. In this study, the strip-based concept is used to identify the exact location of the passing vehicle along the road. The impacts of these loads were measured in terms of pavement damage analysis using the layered elastic method. In this regard, a strip with the maximum number of axle repetitions is identified called the critical strip, and quantified the fatigue and rutting damage ratio of the critical strip. Further, damage analysis is conducted for the most accumulated lane named design lane, and compared their fatigue and rutting damage ratio with the fatigue and rutting damage ratio of the critical strip. The findings of the study indicate that the design of pavement using lane-based analysis will overestimate the thickness of the pavement as compared to strip-based analysis.Item No Access Study of aluminium dross and ordinary Portland cement modified cold bituminous emulsion mix(Institution of Civil Engineers, 2019-06) Kakade, Vijay B.Due to their low cost, cold bituminous emulsion mixes (CBEMs) are preferred for the construction of low-volume roads in India. However, due to the low strength of CBEMs and overloading, the premature failure of these roads is common. The strength of CBEMs is generally increased by the addition of ordinary Portland cement (OPC) and hydrated lime. The use of industrial waste materials is also an alternative to conventional additives for improving the performance of CBEMs. Studies carried out in the past have shown a significant improvement in the strength of CBEMs prepared with the replacement of natural aggregates with industrial waste materials such as fly ash and ground granulated blast-furnace slag. In this study, the proportions of aluminium dross (AD) and OPC were varied from 0 to 3% with increments of 1%. Marshall stability, indirect tensile strength, indirect tensile stiffness modulus and retained stability tests were performed on mixes prepared with different proportions of AD and OPC. The stability and indirect tensile strength values of the mixes containing AD were higher than those of the mixes containing OPC. The retained stability ratio indicated that addition of AD and OPC resulted in a reduction in moisture damage. The optimum content of both OPC and AD was found to be 2%.