Pollution Research Paper

Vol 38, Issue 2, 2019; Page No.(421-427)

UTILIZATION OF WASTE PLASTIC IN BITUMINOUS MIXES - AN EXPERIMENTAL STUDY

MUKESH SAINI AND PRAVEEN AGGARWAL

Abstract

This research work has been carried out to investigate the behavior of mechanical properties of Dense Bituminous Macadam Mixes (G – II) using waste plastic bottles (PET) via dry process.Optimum quantity of bitumen was determined for conventional mixes using Marshall Method and found to be 4.66%. Dense bituminous macadam mixes of grade - II were prepared with various percentages of PET (0%, 6%, 8%, 10%, 12% and 14 % of optimum bitumen content). Mechanical properties of mixes such as Marshall Stability, Flow, Marshall Quotient, Retained Stability and Indirect Tensile Strength (ITS) were determined. Results show that with increase in quantity of PET, mechanical properties of dense bituminous mixes improve initially up to certain extent and the optimum quantity of PET was observed to be 10% by weight of optimum bitumen content,which fulfill the requirement of mechanical properties for modified mixes using waste plastic as per IRC-SP 98, 2013. A good correlation (Coefficient of correlation = 0.961) is observed between Marshall Stability Value and Indirect Tensile Strength for PET modified mixes. Hence, application of plastic waste (PET) in flexible pavements is environment friendly solution in terms of disposal of non-biodegradable waste plastic along with improvement in mechanical properties of bituminous mixes.

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