MAINTENANCE/REPAIR TO PQC SLABS AND PU JOINT FILLING, EPOXY AND ELASTOMERIC ON TAXI TRACK, PTT DISPERSAL IN TECH AREA AT AFS BHISIANA UNDER GE (AF) BHISIANA

Amount

Demolition of cement concrete (un-reinforced) in ground floors and pavings exc. 15 cm thickness of any description and in any position of runway or rigid pavements and removal of demolished materials from site to out side MOD land complete all as specified and directed by Engineer-in-Charge.

Material and labour for providing 10 mm thick sand cushion with clean river sand, duly clear of residual, organic and deleterious materials spread evenly to uniform thickness laid over DLC layer Complete all as specified and directed by Engineer-in-Charge. (Note:- No additional amount is admissible for overlap)

Supply and laying 400 micron polythene film as per IS-2508, white colour, laid over sand layer with and including all required cutting and overlaps not less than 300mm and weight not less than 390gm/sqm over tack coat/sand cushion complete all as specified and directed by Engineer-in-Charge. Note:- (i) The rates for laps shall deemed to be included in the quoted rate. (ii) Sand layer shall be measured and paid separately under serial item no. 2 above

Material and labour for Pavement Quality Concrete (PQC) 295 mm thickness having minimum 28 days field Flexural strength of 45Kg/ Sqcm or 4.5 Mpa, aggregate gradation as per Table 3 of IRC 15-2017, coarse aggregate of clean , hard strong, dense,non-porous and durable pieces of crushed stone or gravel, fine aggregates of clean natural sand or crushed stone sand or combination of both using minimum 360 kg/cum of cement with non-circular,virgin synthetic fibre of 12-18 mm length, specific gravity 1.34 to 1.39, UV stable, alkali resistant, with equivalent dia 15-40 micron, minimum melting temperature as 240°C and minimum tensile strength of 300 Mpa and at the rate as specified by the manufacturer. PQC shall be laid, spread and compacted with slip-form paver of minimum 7.50 m width, including curing and tining by Texturing cum Curing Machine complete, Required surface texturing to be done as specified in Clause -10.1.14 and Table- 9 of IRC:-15-2017 complete all as specified as directed by Engr-in-Charge.

Supply only polyster non-circular fiber 6/12mm long design for meeting point of 240-26 C as secondary reinforcement Complete all as specified and directed by Engineer-in-Charge. Make:- Recron-3s or equivalent from approved list as approved by GE.

Material & Labour for forming 10mm wide and 25 mm deep construction joints filled with polyurethane joint sealant compounds (PU Sealant) using mechanical means to a minimum depth of 10mm and priming the sides, provision of closed cell polyethylene back up rod 12 mm dia minimum and applying masking tape on edge of joint to prevent accidental slippage of sealant on top surfaces and to give a neat finish to the sealant and removing the masking tape after sealant is applied complete all as specified and as directed by Engineer in Charge.

Demolition of cement concrete (un-reinforced) in ground floors and pavings n.exc 15 cm thickness (below or above ground level) of any description and in any position of runway or pavements and removal of demolished materials from site to out side of MOD land complete all as specified and directed by Engineer in Charge.

Material and labour for PCC 1:4:8 type D2, using 40mm graded aggregate as in mass concete or under pavings and like etc, complete all as specified and directed by Engineer-in-Charge.

Material and labour for PCC 1:2:4 type B1, using 20mm graded stone aggregate 75 mm thick in floor,hard standing, pavings etc finished even and smooth without using extra cement, including cutting of joints at every 3mtr complete all as specified and directed by Engineer in Charge. Note : Concrete shall be laid in panels and also in alternate panels as directed by Engineer-in-Charge.

Material and labour for raking out existing filling PU/Bitumen(Grade-B) material in expansion, construction and dummy joints of width exceeding 08mm but not exc 12mm and required depth as specified by special tools like concrete cutter, wire/coir brushes/machines and joint cleaned thoroughly with application of compressed air, making free from all the loose material i.e. dirt, dust, grease existing sealing compound, filler board (as required), including sticked material of existing compound racked upto full depth (up to 40mm) of joints etc to entire satisfaction of Engr-in-Charge with and including filling the joint with polyurethane joint sealant compound using mechanical means with depth of joint sealing compound 10- 12 mm (depth minimum above the backup rod) with minimum movement accommodation factor (MAF) ± 30% conforming to the requirements of BS-5212 and EN-141875-2003 for Hydrolysis/ water resistance test including two coats of primer and filling the balance racked depth of joint with backup material i.e closed cell polyethylene to ensure tight packing, so that no gaps or void exist at the top of backup material separated by bond breaker tape over suitable size HD 100 filler board in position where required and applying masking tape on edge of joint to prevent accidental slippage of sealant on top surfaces to give a neat finish to the sealant and remove the masking tape after sealant is applied as required complete as per manufacturer's instructions complete all as specified and directed by Engr-in-Charge.

All as per Srl item No 10 above but joint of width exc 20mm and not exc 25mm.

All as per Srl item No 10 above but joint of width exc 25mm and not exc 30mm.

All as per Srl item No 10 above but joint of width exc 30mm and not exc 35mm.

All as per Srl item No 10 above but joint of width exc 35mm and not exc 40mm.

All as per Srl item No 10 above but joint of width exc 40mm and not exc 45mm.

Material and labour for repair to top out spelled joints, broken corners and pot holes in concrete slab by chiseling/mechical cutter to provide regular prismatic cavity with sides perpendicular and cleaning off all loose or broken materials to a distance exc 50m and not exceeding 100metre. Cleaning and washing the surface and application of surface treatment with Epoxy complete all as specified and directed by Engineer-in-Charge.

Material and labour in repair to pot holes depth and girth upto 25mm in concrete slab, cleaning the pot holes with electric blower to remove the dust particles and applying primer properly and leave for 30 minutes for settle down and fill with elastomeric concrete as per manufacturer instructions and compacted with tools complete all as specified and directed by Engineer-in-Charge.

Material and labour in repair to pot holes depth and girth 25 to 50mm in concrete slab, cleaning the potholes with electric blower to remove the dust particles and applying primer properly and leave for 30 minutes for settle down and fill with elastomeric concrete as per manufacturer instructions and compacted with tools complete all as specified and directed by Engineer-in-Charge.

M/s Luxmi Constructions (BID ID -3406386)

Ankit Jindal And Company (BID ID -3414796)