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Recycling Potential of Calcium and Silica Based Mining and Cutting Residues in Asphaltic Mixes for Low Cost Roads

Pawan Patidar, Rajneesh Sharma, Dr. Chayan Gupta, Ghanshyam Bhushan, Vyshak C.

Abstract


For speedy development of any country, the transportation networks play vital roles especially rural roads make a decisive contribution and also enabling Socio-Economical Benefits. Presently, India holds second largest roadway transportation mode network globally, in which about two third belongs to low to medium traffic class. Still, due to ageing effect, fatigue & dynamic loading and fund allocation problems affects the serviceability of this type of road networks. Numerous studies indicated that calcium predominant aggregates typically have better stability with stripping proof but lack in skid resistance due to polishing effect under traffic leading. Likewise, silica predominant aggregates have better proofing in skid but lack in stability and stripping. This study was fully focused on examine performance of asphaltic blend containing calcium and silica-based aggregates as fine and coarse aggregate in flexible pavement under low to medium traffic loads condition by conducting various laboratory tests. For aforesaid goal, three type of asphaltic mix was prepared, in which first mix contain calcium-based aggregate; second calcium and silica based aggregate and; thirdly silica-based aggregate as a fine and coarse aggregate respectively.

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References


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