Page 31 - Unit 1: Introduction of Highway and Engineering

Civil Engineering Department | DCC3113 : Highway & Traffic Engineering

Concept Types of Road Pavement

3. Flexible Road Pavement – cater for higher volume and heavier traffic compared to
gravel and dirt roads
i. Asphaltic Concrete – more superior material and widely used. Designed for higher
traffic volume and provide good riding quality
ii. Porous Pavement – same structured layer with asphaltic concrete pavement
except the wearing course is constructed with open graded mix to provide
interconnected voids to enable water to infiltrate and flow on the impermeable

binder course layer to side drain. The advantages of porous pavement are :
 Reduce flash flood on road surface
 Reduce water spray from front vehicle
 Reduce glare effect
 Reduce noise from tyre-surface contact

However, the cost is more expensive and prone to clog

problem

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Prepared by : SITI ZURAIFA BINTI MD SAH, zuraifa@pmu.edu.my