Preliminary works
- Area to be treated is demarcated and confirmed at site with the Engineer representative. The area is milled to construct key joints as per 2.3.B.ii.
- Surface is cleaned from dirt, dust and vegetation by sweeping with mechanical power broom.
Application
of Polymer Modified Binder (PMB 1/76)
- Polymer modified binder (PMB 1/76) shall be sprayed using mechanical distributor spray bar to the required rate as specified in the specification.
- Temperature of the tack coat shall be sufficiently high to permit a uniform spray pattern and traffic shall not be allowed on the tack coat.
Installation
of Paving Fabric
- Installation of paving fabric shall be done using custom-made rig supplied by the supplier.
- The paving fabric shall be laid with minimum wrinkling or folding
Overlay
of Wearing Course
- Overlay of 50mm wearing course shall be done immediately after installation of paving fabric.
- The sticking of the fabric to tyres can be minimised by spraying some asphalt mix or chippings on to the wheel track.
- The laid material is to be let to cure for minimum of 6 hours and during this duration the lane is to be closed from traffic.
