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- W648187315 abstract "The present investigation was carried out to propose the use of waste processed plastics for the modification of bituminous concrete (BC) mix in order to cater to the need of varying climactic conditions prevailing in India and heavy axle loads on the pavements, as well as to minimize plastic waste. Waste processed plastics were mixed with bituminous concrete by dry process to get modified mix. The Marshall Method of mix design was adopted to find out the optimum bitumen content. Marshall specimens were prepared for bitumen content of 4.5, 5.0, 5.5 and 6.0 per cent by weight of mix with 0 per cent, 3 per cent, 6 per cent, 10 per cent and 18 per cent of waste plastics by weight of bitumen. Bulk density, Marshall stability, flow, Marshall Quotient, air voids, voids in mineral aggregates (VMA), voids filled with bitumen (VFB), retained stability, indirect tensile strength, tensile strength ratio (TSR), stripping, fatigue life and deformations were determined and compared with neat bituminous concrete mixes. The Marshall Stability value for the mix with 6 per cent of waste plastic was much higher as compared to other mixes. The stability increased by 12 per cent for mix with 6 per cent of waste plastics as compared to the neat BC mix. The flow value is also within the limit for this modified mix and flow observed was in the range of 2 to 4mm. Indirect tensile strength (ITS) values for unconditioned sample at optimum bitumen content (OBC) were increased by 29 per cent for the BC mix with 6 per cent waste waste plastics as compared to the ITS value of neat BC mix. Similarly for conditioned samples ITS values increased by 38 per cent for the mix with 6 per cent, and retained stability was well above the required 75 per cent. Boiling tests showed that there was no stripping of bitumen for BC mix with 10 per cent or more waste plastic content. Rut depth after 10,000 cycles was determined for modified and neat bituminous mixes. There was significant reduction in rutting characteristics of waste plastics modified mix. It was observed that the fatigue life of plastics modified bituminous concrete mix increased at different stress levels." @default.
- W648187315 created "2016-06-24" @default.
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- W648187315 date "2013-01-01" @default.
- W648187315 modified "2023-09-26" @default.
- W648187315 title "Performance studies on bituminous concrete mixes using waste plastics" @default.
- W648187315 hasPublicationYear "2013" @default.
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