Mill the existing bituminous asphalt layer using milling machine to the specified depth to remove cracks and defects.
Verify the milling thickness to ensure compliance with the work specification.
Use the dump truck to collect milled asphalt and transport it to the designated recycling or disposal site, following environmental regulations and project requirements.
Use a power broom (rotary type) and/or other suitable equipment to ensure that the surface is free from any contaminants before applying the tack coat, free from loose debris.
A trial lay of the premix shall be conducted to achieve optimal compaction based on two (2) rolling patterns (choose one that achieves the optimum compaction with maximum compaction effort).
The following day, a coring test shall be performed to measure the thickness of the premix.
Core samples then shall be sent to the laboratory for compaction testing and loose samples tested for Marshall Tests.
Paving work shall resume according to the appropriate rolling pattern during Trial Lay to achieve an optimum compaction.
The following day, perform coring tests to measure the asphalt layer thickness. The average over 100 meters must meet the required thickness, with a minimum thickness at any point within ±5 mm.
Use the dump truck to collect milled asphalt and transport it to the designated recycling or disposal site, following environmental regulations and project requirements.
Apply temporary road marking for safety of road users. Then, apply Permanent road marking work shall be carried out after 72 hours.
The defect liability period for the project is either 6 or 12 months, depending on the project cost.
