GRASS CUTTING WORK AND REPAIR TO RUNWAY SHOULDER AND PQC AT NS IN AIRFIELD AT TECH AREA, AF STN GWALIOR

M&L cleaning down the old treated surface of under/over shoot area of runway to remove dust, dirt by wire brushes and brooming down the surface, cleaning with water and applying evenly 02 (two) coats of cement base paint, complete all as specified and as directed by Engineer in Charge.

Demolition of flexible / rigid pavement of any description and in any position by means of machanical methed including cutting by machine of existing edges / boundary of any thikness and removing the material exc. 5km but not exc. 8 km beyond MD land complete all as specified and as directed by Engineer in Charge.

M&L for 150 mm thick dry lean concrete of compressive strength not less than 7 Mpa at 7 days (Min cement content should not be less than 140 Kg/Cum) complete all as specified and directed.

M&L for 10mm thick layer of sand including watering rolling over DLC complete all as specified and directed.

M&L for 400 micron HDPE sheet virgin quality having min weight 390 gm per sqm over sand layer complete all as specified and directed.

M&L for pavement quality control concrete using crushed stone aggregate having minimum field flexural strength of 45 Kg/Sq Cm and characteristic compressive strength 40 N/Sqmm in pavement using non circular/triangular synthetic fibre @ 0.25% by weight of cement used laid to level, gradient and camber including necessary form work complete all as specified and directed. Note : Non circular / trinagular fibre shall be measured and paid for seperately as supply only.

Supply only polyester non-circular/traingular fibres 12-18 mm long with circum circle diameter 15-40 micron, designed for melting point of 250 degree celcius and having specific gravity of 1.34 to 1.39 complete all as specified and as directed.

M&L for finishing of concrete pavements by belting and brooming without using extra cement complete all as specified and directed.

M&L for forming construction/dummy joint 8-10mm wide and 100mm deep, primed and providing a back up rod/debonding strip and top 10mm primed and sealed with and using polyurethane based sealing compound with suitable primer as per manufacturer's recommendations complete all as specified and directed.

M&L for forming 25mm wide expansion joint to full depth of slabs (300mm thick) and filled with compressible rubber filler board (silflex dura board HD 100 of supreme make or equivalent) and providing a back up rod/debonding strip and top 12mm (excluding 2 to 3 mm recess at top) primed and sealed with and using polyurethane based sealing compound with suitable primer as per manufacturer's recommendations, complete all as specified and as directed (including cutting edges of existing pavements for forming expansion joints between existing and proposed slab if required). Note: Compressible filler board shall be fixed after full depth cutting of slab,complete all as specified and directed.