CWE/AF AMB/AMB-39/2025-26 REPAIR TO FLEXIBLE PAVEMENT WITH POLYMER MODIFIED EMULSION AND CERTAIN MISC WORKS AT AF STN AMBALA UNDER GE AF AMBALA

Material and labour for preparing of old black top surface by brushing with wire brushes for removing caked mud etc, sweeping with brooms and finally fanning the cleaned surface by using mechanical means with using air blower to remove all loose dirt complete and applying two coats of Polymer Modified Emulsion (PME) with mineral filler as per manufacturer instruction and by using spraying machine and techinical description as per Note 'B'. For first coat with 0.6 litres undiluted PME diluted in 0.6 litres of water in 1:1 ratio and mineral filler as directed by manufacturing sprayer machine having penetration value 10-20 mm initial setting time of 4 to 5 hours but not more than 8 hours. First coat with 1.2 litres of emulsion comprising of 0.6 litres (Undiluted) PME diluted in 0.6 litres water to be applied uniformally on each 1.0 Sqm area mixed with mineral filler as recommended by manufacturer of PME and ensure unifrom finish of PME on flexible surface means and using specially designed mopper for mopping the surface and after drying of first coat as per manufacturer instruction second coat with emulsion of 0.8 litres comprising of 0.4 litres (undiluted) PME diluted in 0.4 litres water to be applied uniformally on each 1.00 Sqm area after drying and setting of first coat complete all as per manufacturer instruction and direction of Engr-in-Charge complete all as specified. Make of PME : M/S Ooms Polymer Modified Bitumen Pvt Ltd, M/S LN Petro Chem Private Limited (Product Brand : EMULCOTE) and other equavalent make which shall be approved by E-in-Cs branch New Delhi even after bid submission end date.

(l) Care shall be taken to fill gaps/cracks up to 3mm size with mineral filler as per manufacturer's instructions. (m) Application of PME shall be done under the supervision of manufacturer's technical experts. (n) The application of PME should be carried out on a clear day to avoid mixing of rain water with the PME based emulsion. (o) Provision of Rubber removal will be perform by AAI (Airport Authority of India) well in advance which will be coordinated by GE and concerned Engr-in-Charge and only thereafter PME woks will be carried out as per scope of work. Notes B : As per E-in-C Branch directions vide policy letter No 95610/Policy/116/E2W (RI-I) dt 23 Mar 2017, the spraying machine used in the works as per designed to mix PME, water and mineral filler to convert it into fine homogenous compound for application. The Technical details and description of the spraying machine is as under:- (i) PME - Rejuvenator Mixer tank capacity ranging from 600 ltrs to 1400 ltrs. (ii) Batch (PME-Rejuvenator and mineral filler) of capacity ranging from 450 ltrs to 1250 ltrs. (iii) Machine output per hour 500-1000 Sqm per hour. (iv) Total connected pumppower 10 HP - 20 HP. (v) Water feeding system through 1 HP self primimg moon set pump. (vi) Load cell based digital weighing system with digital display batch controller. (vii) Gear Ring & Rollers are accurately machined with gear cutting operation supported by heavy duty twin rollers to prepare homogenous mixtures. (viii) Microprocessor panel with digital control.

Notes C (i) Runway painting area i.e center line, touch down zone, side strips marking aiming point and all painting area will be covered before PME application. It will be ensured that the covering is not disturbed during application of PME. (ii) Runway center line lights, touchdown zone light, runway edge light and other lights will be covered during application of PME and any damage to the existing lights will be made good without any extra cost to the Govt. (iii) The area of these runway paintings mentioned in Note C (i) above will not be considered in measurement of from the area of PME application.

Material and labour as in repair to cracks of existing bituminous surfaces of taxi tracks by cutting to a width of 10 to 25 mm and 30 to 50 mm deep by mechanical cutters etc cleaning with air compressor to remove all loose particle, dust etc and filling with epoxy tar compound as per manufacturer's instructions and disposing all rubbish / refuse to a distance exceeding 50m but not exceeding 100m complete all as specified and as directed.

Material and labour for opening the cracks on runway/taxi way by thoroughly clean out the crack and remove any loose debris using compressed air or other approved means to a minimum 10 to 20mm width and upto full depth of the crack not exceeding 100mm thick or to a depth as directed by Engineer-in-Charge and filling the cracks with Elastomeric Bituminous rope (RUNPHALT) of make as approved by GE, and apply direct torch flames about 20 to 30 seconds, till it liquefies. The treated crack shall be covered with runway crack sealing tape, all as per the manufacturers instruction including removing all debris and other waste etc and leaving the premises neat and clean, complete all as specified and directed. Make: Srijan systems Pvt Ltd or equivalant make and specification as approved by GE.

Cleaning the cracks with wire brushes, making the surface free from dust and material and labour for applying slurry seal containing polymeric modified bitumen emulsion, fine aggregate, cement and lime (1:1:1:1) and water as per requirement and the cracks shall be filled with the above mixture by trowel application the size of cracks 2mm to 6mm and a depth of upto 10mm. After filling the cracks with the above compound, top surface of the crack shall be finished with the same compound uniformly and ensure finish of area completeall as per manufacturer instruction and all as specified and as directed. Make of PME : M/S Ooms Polymer Modified Bitumen Pvt Ltd, M/S LN Petro Chem Private Limited (Product Brand : EMULCOTE) and other equavalent make which shall be approved by E-in-Cs branch New Delhi even after bid submission end date.

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