This study analyzed the application of polymer modified bitumen for flexible pavements. Materials tested included bitumen, ABS, PVP, PVA, and waste polymer. Polymer modified bitumen samples were prepared by adding polymers at 3%, 5%, and 7% to heated bitumen and stirring for 4 hours. Stripping tests were conducted on the samples by heating to 160°C and adding aggregates for 2 hours, then leaving for 24 hours. The benefits of polymer modified bitumen identified were increased fatigue resistance, decreased thermal cracking, improved stability, positive modification of viscoelastic properties, and decreased total pavement costs.

1. A STUDY ON THE APPLICATION OF
POLYMER MODIFIED BITUMEN FOR
FLEXIBLE PAVEMENTS
UNDER THE GUIDANCE OF Dr.R.VELKENNEDY
BY
R.MANIMOZHI
M.PUNITHAVATHY
R.SHALINI

2. DETAILS ON THE ANALYSIS:

3. MATERIALS :
 BITUMEN : 60/70 Grade
 ABS : Acrylonitrile Butadiene Styrene
 PVP : Polyvinyl Pyrrolidone
 PVA : Polyvinyl Alcohol
 Waste polymer

4. PREPATION OF POLYMER MODIFIED
BITUMEN:
ADDITION OF
BITUMEN 1600C
POLYMER
600 to 650 rpm
POLYMER MODIFIED STIRRING USING
BITUMEN MECHANICAL STIRRER
4 hours

5. PREPARATION SETUP

6. PREPARED SAMPLES:
 ABS Polymer modified bitumen of 3%, 5%, 7% samples were
prepared.

7. contd….
 Similarly preparation of polymer modified bitumen
samples with PVA, PVP & waste polymer for 3%, 5% and 7%
was prepared.

8. STRIPPING TEST:
1600c 1600c
50 grams 2.5 grams 2 hrs
24 hrs

9. BENEFITS OF PMB:
 Fatigue resistance increases.
 Thermal cracking decreases.
 Stability increases.
 Viscoelastic property of bitumen is modified positively.
 Decreases the total cost of pavements.