AAI/PKNG/SM(C)/Polysulphide Sealant/

Demolishing cement concrete manually/ by mechanical means including disposal of material within 50 metres lead as per direction of Engineer - in - charge. 15.2.1 Nominal concrete 1:3:6 or richer mix (including equivalent design mix)

(iv) Providing and laying in position Polysulphide sealant of approved make conforming to BS-5212-1990 or IS: 11433-1995 in expansion/ construction / dummy joints including rounding off edges, applying 2 coats of approved primer compatible with the brand of Polysulphide and preparing the surface and applying masking tape along the edge of joint to prevent accidental spillage of sealant on top surface and to give neat finish to the sealant and removing the masking tape after application of sealant etc. as per the details below: (a) Expansion Joints of size 25 mm wide and 10 mm deep over 30mm dia expanded closed-cell Polyethylene foam back-up/backer rod of minimum density 22 Kg/Cum, as per manufacturer’s specifications. (b) Construction Joints of size 10 mm wide and 10 mm deep over 12mm dia expanded closed-cell Polyethylene foam back-up/backer rod of minimum density 22 Kg/Cum, as per manufacturer’s specifications. (c) Dummy Joints of size 10 mm wide and 10 mm deep over 12 mm dia expanded closed-cell Polyethylene foam back-up/backer rod of minimum density 22 Kg/Cum, as per manufacturer’s specifications. (v) Making profile as per DGCA CAR, panel drawing showing dummy, construction, expansion joints location.

Raking out the existing sealing compound from the joints and cleaning the joints by removing dirt, debris, rubbish, etc., using suitable tools and machinery, in preparation for laying polysulphide sealant, complete as directed by the Engineer-in-Charge (EIC).

Providing and laying in position polysulphide sealant of approved make conforming to BS-5212-1990 or IS 11433-1995, in expansion / Construction / dummy joints including rounding off edges, applying 2 coats of approved primer compatible with the brand of polysulphide and preparing the surface and applying masking tape along the edge of joints to prevent accidental spillage of sealant on top surface and to give neat finish to the sealant and removing the masking tape after application of sealant etc. complete as per direction of Engineer-in-Charge & particular specifications. [Note : for purpose of payment, quantity (Length X Width X Depth) of sealant in cucm only will be measured.]

Sure Bond Self Adhesive, Clold applied polymer modified high tack bituminous instant Runway/ Tarmac crack sealing Tape of 100mm width , 2KPa thick having quick release film on one side Runway/ Pavement/ Tarmac crack to form high strength water proof layer, Make Srijan System Pvt Ltd or equivalent approved brand.

Supply of Run patch , self adhesive, cold applied made of polymer modified High Tak Bituminious spread sheet pf 1mx10m roll having bond strength of 0.4 Mpa, nominal thickness 3.5-4.0mm for sealing of potholes/cracks on Runway, Taxiway for both asphalt and concrete surfaces. Note: Qty 1 number refers to 1 Roll of 1mx10m