Page 31 - UNIT 3 - CONSTRUCTION OF FLEXIBLE PAVEMENT

Civil Engineering Department | DCC3113 : Highway & Traffic Engineering

Concept Coating

Two types of coating:
Prime Coat (Salut Perdana)

• liquid bitumen, sprayed onto clean unbound roadbase using pressure distributor at the
rate of 0.5 – 1 liter/m
2
• The temperature must be according to the specifications stipulated.
• MC-70 (50°C -70°C), SS-1K (25°C - 45°C) cured for 24 hours to achieve maximum
penetration

Tack Coat (Salut Jelujur)

• shall be sprayed about 50 to 100 yards forward from paver machine for a reasonable
time
2
• bitumen emulsion, sprayed onto bituminous layer, rate 0.25 – 0.55 liter/m
• RS-1K, 25°C - 45°C
• Carried out in dry, warm weather and dry surface, prevent spattering adjacent trees,
furniture etc, not to be discharged into drains, gutter, keep traffic off

• Equipment – power broom, compressed air blower, pressure distributor

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