Page 17 - UNIT 3 - CONSTRUCTION OF FLEXIBLE PAVEMENT

Civil Engineering Department | DCC3113 : Highway & Traffic Engineering

Concept Bituminous Bound Macadam Road Base

• Graded aggregates + bitumen 3-4%

• 38% of aggregate passing 3.18 mm, 65% of is coarse aggregate
• Bitumen has a high viscosity, penetration grade 80/100
• Advantages:

 Good load distribution

 Reducing base course thickness
 The use of bitumen can adding stability

 Have a degree of elasticity that avoid crack
 Plasticity properties, allowing some sediment

 Give protection to the subbase and subgrade if rainy
 Can be used for traffic during construction

• Disadvantages:
 High cost

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