Polymer Modified Asphalt (PMA)
is an improved asphalt cement produced by blending either natural polymer (such as natural rubber) or synthetic polymer (such as SBS or EVA). PMA will provide better strength and durability to road surfaces than conventional asphalt cement used in hot mix asphalt (HMA), due to:
- Higher resistance to wear
- Higher resistance to rutting
- Higher elastic recovery at lower/higher temperature
- Higher cohesion or less reveling
- Higher resistance to stripping
- Higher resistance to high temperature preventing bleeding
Its properties are in accordance with the following standard: