• kajal gadhavi
• jayesh juremalani

Stone mastic asphalt is a gap graded asphalt mixture which can be used in surface layer of high volume pavements, wearing surface for bridge decks, etc…. Due to recent problem of pavement failure at intersection, bridge deck, rotary etc, the use of mastic asphalt is increasing exponentially. The mastic asphalt is a void less bitumen pavement where the voids are filled with bitumen up to 16%, but the optimum bitumen content is very high up to 16% in Indian condition and hence it cause bleeding. This study aims to reduce the OBC content by using modified bitumen. Modified bitumen can decrease the onsite cooking time as well as OBC. Hardness number test has been conducted according to MORTH 5th Revision for finding out the hardness number for modified bitumen & conventional bitumen. In these test 105 moulds has been prepared for modified and conventional bitumen. From the test, optimum bitumen content and optimum plastic content has been extracted. On site mixing time has been reduced by 20 min using plastic as a modifier. Result of the Comparison between modified bitumen and conventional bitumen shows that OBC content of modified bitumen is slight less than the conventional bitumen VG 30.

Pitch mastic asphalt, bridge deck, hardness no, shredded plastic, pavement surface

"performance enhancement of mastic asphalt using suitable modifier", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 4, page no.656-663, April-2019, Available :http://www.jetir.org/papers/JETIR1904295.pdf

"performance enhancement of mastic asphalt using suitable modifier", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 4, page no. pp656-663, April-2019, Available at : http://www.jetir.org/papers/JETIR1904295.pdf