Filling up/ repairs to potholes through mechanized method using Jetpatcher machine in the District of North Goa.

Repairs to potholes by a Jet Patcher /Velocity Patcher/Cold Mix Spray Injection Patchwork Machine having an aggregate hopper size of minimum 5 cum and an emulsion tank of minimum 1 cum with heavy duty Air Compressor/ Rotary Positive Displacement Blower with direct drive, auxiliary engine with direct drive to heavy duty blower, a separate airline silencer, a compressor for cleaning the surface and water spraying mechanism for dust control, using semi-dense bituminous concrete in cold mix by using stone aggregate of specified grade and RS-1 emulsion @ 6.5% by weight of the mix, including cutting of the pothole to a geometrical shape & size using a cutting machine, thorough cleaning of the pothole, removal of loose debris, dewatering in potholes, transporting the material to the work site by a mobile truck mounted on the jet patching equipment, spraying the cold RS-1 emulsion as a prime coat @ 2.5 kg per sq m of the pothole area, laying the mix & compacting the laid cold mix with a minimum 4 ton static road roller, to achieve a compacted thickness of upto 50 mm, by maintaining the profile of the portion of the existing road, abutting the pothole, emulsion grouting to seal all voids followed by pouring of a layer of fine dry aggregate, before opening to traffic, complete, as per directions of Engineer-in-charge. The rate shall also include providing traffic safety and control measures as specified under Section 112.4 of MoRTH specifications, charges towards quality control tests & remedying of defects, if any, during the defects liability period of 18 months.