Page 12 - Lecture Notes DCC3113

iii. Stone Mastic Asphalt – same structured layer with asphaltic concrete pavement except the
wearing course is constructed with gap graded aggregate

Rigid Pavement

Similar structure layer s with flexible pavement except
concrete is used as surface material. The advantages are : Longitudinal Joint Tranverse Joint

 Stronger material
 Longer service life Surface Course

 Less maintenance Base Course

Subbase Course

However, the cost is much higher need more time before Subgrade (Existing Soil)

open to traffic and could cause higher maintenance cost if Figure 1-12: Rigid Pavement

defects occur

Semi-rigid road Pavement

Used widely at intersection, curves, bus stops and terminals and ports where interlocking block is used
as surface material

Paving
Bending

Base

Sub base*
(Optional)

Sub grade

Figure 1-13: Semi-Rigid Pavement

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