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Road Construction (Pavement Works (Subbase (Material: Sand, Gravel,…

- - - - Paved
      - Gravel
      - Earth
- - - - Intermediate
        
        Pneumatic wheel
      - Finishing
        
        Smooth wheel
      - Initial
        
        Smooth wheel
- - - - Mateial: Crushed rock, Crushed gravel, or mixture of both
      - Spread at OMC plus/minus 1% OMC
        Laid in 100-200mm compacted thicness
      - Compaction in longitudinal direction, lower edge towards crown, density>=95% MDD
    - - Material: Conform to the physical and mechanical quality requirement in asphaltic concrete section
      - Density >=90% frm Marshall @ OBC density
- - - - Liquid bitumen, sprayed into clean inbound roadbase
      - Pressure distributor rate: 0.5-1 litre/m^2
      - MC-70 (50-70C), SS-1K (25-45C)
        Curing: 24 hrs
    - - Bitumen emulsion, sprayed onto bituminous layer
      - Rate: 0.25-0.55 litre/m^2
      - RS-1K (25-45C)
        Curing: 45 mins-1hr
      - Dry warm weather