REPAIR AND MAINT TO JOINT FILLING AND EPOXY ELASTOMERIC CONC TO RUNWAY TAXI TRACK LINKS TARMAC AND DISPERSALS UNDER GE AF TECH AREA AGR

Amount

M&L for chipping/cutting of cracked/broken edges of cement concrete pavement by cutting rectangular, sectios by diamond cutters, removing loose particle, unsound material and cleaning the surface by the air compressor and removal of demolished materials/ debris to a distance out side AF Station and appplying one tack coat of epoxy primer and there after at an interval of 30 to 45 minutes pits shall be filled with the epoxy mortar consisting of the following ratio / composition complete all as specified or all as per manufacturers instructions :-. (a) Epoxy resin primer :- (i) Epoxy resin (Araldite) Gy-250 : 100 Part each by weight. (ii) Aradur 140 : 50 part each by weight (b) Epoxy mortar :- (i) Aradur 140 : 50 part each by Weight (ii) Araldite of Gy 250 : 100 Part each by weight. (iii) Silica sand M-12 grade : 600 Part each by weight.

M&L for repair to damaged broken portion of existing surface of PQC slabs of taxi tracks / runway using elastomeric concrete in form of potholes measuring 10 to 30 mm diameter and depth n.exc 50mm by cutting to the required depth untill hard strata of concrete is achieved, cleaning the surface by the air compressor and priming the surfaces with special primer RDL 942 and treating the surface with elastomeric concrete Flex O Patch (10 kg kit of three parts viz part A-3.0 Kg, Part B-1.50 Kg and Part C-5.50 Kg E-crete aggregate) as per manufacturers instructions and levelling the surface using trowel and cleaning the surface to match the existing surfaces complete all as specified and directed. Note : ELASOMETIC CONCRETE shall be "QUARTZ" with fibre and hardner resin will be manufactured by M/s CHOKSEY or equivalent as specified

M&L for repair to damaged brocken portion of existing surface PQC slabs of taxi tracks / runway using elastomeric concrete in form of potholes measuring 31 to 50 mm diameter and depth n.exc 50mm by cutting to the required depth untill hard strata of concrete is achieved, cleaning the surface by the air compressor and priming the surfaces with special primer RDL 942 and treating the surface with elastomeric concrete Flex O Patch (10 kg kit of three parts viz part A-3.0 Kg, Part B-1.50 Kg and Part C-5.50 Kg E-crete aggregate) as per manufacturers instructions and levelling the surface using trowel and cleaning the surface to match the existing surfaces complete all as specified and directed. Note : ELASOMETIC CONCRETE shall be "QUARTZ" with fibre and hardner resin will be manufactured by M/s CHOKSEY or equivalent specified .

M &L for racking out joints upto a depth at 25mm, saw cutting the vertical sides of joints for making edges of joints straight upto the possible extent by keeping maximum width of joint 10 to 15mm, including cleaning all loose particles/dust from the joints by using brushes, and with the help of air compressor and removing away the existing sealing compound and all other loose materials inside of AF Station where directed. Fixing masking tape along either side of the joints, placing back up sheet 10 to 12 mm thick of dia 25% more than width of joints/backup rod/de-bonding strip (thickness 10 to 12mm) in position and filled with polyurethane based sealing compound (pitch free) ISI marked single compound having 3mm recess from top of joint after applying suitable primer as per manufacturer's instructions and removing masking tape, complete all as per manufacturer's instructions and directed by Engir-in-Charge. Note :- PU to be mixed and filled by only OEM.

-Ditto- all as per item No-4 but width of joint 16-25mm complete all as specified and directed.

-Ditto- all as per item No-4 but width of joint 26-40mm complete all as specified and directed.

GIRENDRA SINGH AND CO

M/S SINGH ELECTRIC CO

Abhi Construction

M/s K S Builders

Rakesh Kumar

m/s Agra Builder

deva engineers