CA NO CWEAFJ-22/2025-26 REMOVAL OF RUBBER DEPOSIT ON MAIN RUNWAY MISC WORK BITUMEN HUNGRY PORTION OF RUNWAY REPAIR TO JOINT FILLING REPAIR TO CONCRETE PAVEMENT AND CRACKS WITH ELASTOMETRIC OF DISPERSAL AND LINK AT AF STATION JAMMU

M&L for complete removal of rubber deposit for runway surface using water blasting cum vaccuming machine with suitable operating water pressure so that the total rubber deposits are removed for runway both (rigid and flexible), without use of any chemical and without any damage to the existing surface complete all as specified and directed by Engineer-in- Charge. Note :- The tenderer shall take into consideration the following points while quoting his rate for the item :- (i) Total rubber deposit should be remove to a distance not less than kilometer and the debris/water vaccumed simultaneiously leaving no FOD so that the runway is available for operating immediately. (ii) Rubber deposit debris should be in solid form when finally disposed. (iii) In any emergency condition the machine should exit from the runway in less than 4 minutes without leaving any FOD. (iv) Friction test should be carried out before and after rubber deposit removal operation. (v) After carrying out rubber removal operation on the runway, the friction reading of the rubber removed segment should be minimum 0.60µ. (vi) The surface of both concrete/bitumen (rigid/flexible shall not get any kind of damages during the process of rubber removal not or any adjoining area, Joint filling etc. Damages made if any shall be made good by the contractor without any extra cost. (vii) Site availability shall be as per User's/site requuirement (viii) Rate including from any aircraft coming and stoppage of work in a day and work shall be commenced in night as per User's direction.

M&L for cleaning and racking out of old expansion joint of any length, 20 mm to 30 mm wide and 45 mm to 55 mm deep of existing sealant compound, back up rod and filler board of the existing joints by special tools like chisel, hammer, L type hook, racker/cutting blades/machines, widening of joints by using joint cutting blades of appropriate size, straight and smooth edges. Joint cleaned thoroughly with application of compressed air. Joint shall be made dry, vacuum cleaned and free of dirt, oil, vegetation and other debris Application of two coats of primer with thin brush by forward and backward movement at an interval of 30 minutes before placing the backup rod and pouring the sealant thereafter filled with pre-moulded 25 mm thick compressible polyethylene closed cell type filler board as specified, over it filled with closed cell medium density, cross linked polyethylene foam backup rod of 30 mm to 40mm dia for complete length of the joint. Finally filled with pitch free grey polyurethane joint sealant meeting the requirements mentioned in BS-5212, BS 4254 and EN-141875-2003 with minimum movement accommodation factor MAF of +/- 30% minimum depth of sealant above de bonding strip shall be 10-15mm and applying masking tape on edges of joint to prevent accidental spillage of sealant and removing the masking tape after sealant is applied complete all as specified and directed.

M&L for cleaning and Racking out of old dummy joints of any length, 8 to 10 mm wide and 26 to 31 mm deep of existing sealant compound and back up rod of the existing joints by special tools like chisel, hammer, L type hook, cutting blades/machines, widening of joints by using joint cutting blades of appropriate size straight and smooth edges. Joint cleaned thoroughly with application of compressed air. Joint shall be made dry, vacuum cleaned and free of dirt, oil vegetation and other debris Application of two coats of primer with thin brush by forward and backward movement at an interval of 30 minutes before placing the backup rod and pouring the sealant. Thereafter filled with closed cell, medium density, cross linked polyethylene foam backup rod of 10 to 12 mm dia fo complete length of the joint, over it to be filled with pitch free grey polyurethane joint sealant meeting the requirements mentioned in BS-5212, BS 4254 and EN-1418752003 with minimum movement accommodation factor (MAF) of+/- 30% minimum depth of sealent above de bonding strip shall be 10-15mm and applying masking tape on edges of joint to prevent accidental spillage of sealant and removing the masking tape after sealant is applied complete all as specified and directed.

M&L for cleaning and Racking out of old construction joints of any length, 12 to 18 mm wide and 31 to 45 mm deep of existing sealant compound and back up rod of the existing joints by special tools like chisel, hammer, L type hook, cutting blades/machines, widening of joints by using joint cutting blades of appropriate size straight and smooth edges. Joint cleaned thoroughly with application of compressed air. Joint shall be made dry, vacuum cleaned and free of dirt, oil vegetation and other debris . Application of two coats of primer with thin brush by forward and backward movement at an interval of 30 minutes before pouring the sealant Thereafter filled with closed cell medium density, cross linked polyethylene foam backup rod of 15 to 20 mm dia for complete length of the joint, over it to be filled with itch free gray polyurethane joint sealant meeting the requirements mentioned in BS-5212, BS 4254 and EN-141875-2003 with minimum movement accommodation factor (MAF) of+!- 30% minimum depth of sealent above de-bonding strip shall be 10- 15mm) and applying masking tap on edges of joint to prevent accidental spillage of sealent and removing the masking tape after sealent is applied complete all as specified and directed.

M&L for cutting existing loose patches/spalled edges, widening of existing cracks of concrete pavement in true geometrical shapes to average depth of 20 mm to 25 mm using diamond cutters operated with gen sets, cleaning the surface dry and free from dust/dirt with air compressor in order to achieve proper bond between elastomeric concrete and cement concrete surface and applying polyurethane based elastomeric concrete over a coat of approved primer as per manufacturer's instructions including supply and fixing masking tape on pavement surface to prevent accidental spillage of elastomeric concrete and removing the masking tape and cleaning the area of application after the application is over complete all as specified and directed.

M & L for cleaning the surface by brushing wire brushes for removing caked mud etc sweeping with compressor air blower (50 to 90 PSI) to remove all loose dust and dirt etc/taking out dust/existing material with compressed air and making the surface free from dust, drying the surface and applying two coats of Polymeric Modified Emulsion (PME) by using self-propelled emulsion distribution uniformly or towed emulsion pressure sprayer, equipped for spraying the PME uniformly & mopping of total undiluted PME @ minimum 1.00 litre per sqm undiluted in two coats in the ratio 1:1 (PME : Water) and ensure uniform finish complete all all specified and as directed. Note :- The tenderer shall take into consideration the following points while quoting his rate for the item (i) No price adjustment shall be applicable if excess quantity of polymer modified emulsion(PME) than that mentioned above is used depending upon condition of the surface to be treated. (ii) Minus price adjustment as pro-rata of quoted rate for min 1.0 litre/Sqm in two coats shall be made, if less quantity of PME as per manufacturer's instructions and subsequently approved by GE is used in work. (iii) A preformance guarantee certificate for two year shall be submitted by the contractor to the completion of the works as specified. (iv) PME must have penetration value of 10-20 mm and initial setting time four to five hours but not more than eight hours. (v) Special care shall be taken to fill gaps/cracks with 6mm to 2.36 mm size coarse sand as per manufacturer’s instructions and quoted rate is included for repair of gaps/cracks. (vi) Cost of trial patch 15m x 15m deemed to be included in rates quoted for above item. A Trial patch may be done before and to see the feasibility for application + drying from 1930 -0930 to make the surface available for operations from 0900 hours next day (vii) To prevent the old runway marking when you are appling PME on runway surface (viii) Work runway will be available from 1930 hours to 0830 hours next day. It should including application of PME + Drying time. (ix) A Guarantee certificate for two years and Guarantee money 2% of total contact value shall be submitted by the contractor to the GE on completion of work. This Guarantee money shall be in addition to the performance security mentioned in Sch 'A' note No 11.1.

Note : No claim shall be made by contractor for above Srl item No 1 to 5 for site availability as per User's/site requirement and stoppage of work due to any aircraft coming and stoppage of work in a day. The rate shall be deemed to be included in the respective items.