Specification :

BITUMEN + MODIFIER = MODIFIED BITUMEN

Modified Bitumen Introduced in Eighties to combat with common pavement distress. There are about 4 different specifications based on type of modifier used similar to ASTM specifications for modified bitumen. Many Authorities advises for use of minimum 10% modified Bitumen.

ADVANTAGES OF MODIFIED BITUMEN

Higher Resistance to Deformation at high Temperature
Improved Aging Resistance
Improved Adhesion between Aggregate and Binder
Higher Fatigue Life of Mixes
Delay in Thermal / Reflective Cracking
Improved Temperature Susceptibility
Over all Extended Pavement Life