REPAIR TO CRACKS/BROKEN EDGES OF PAVEMENTS WITH EPOXY, PU JOINT FILLING, COLD EMULSION AND OTHER CONNECTED WORKS IN AIRFIELD AT 8FBSU, AF STN AWANTIPUR (PH-I)

Amount

Repair to existing joint in PQC/PCC rigid pavement of size 20 to 40 mm wide and 40 mm depth (average) consisting of the following activities, complete all as specified and directed. Racking out old decayed/damaged existing sealing compound and cleaning the joints thoroughly by removing dust, dirt, foreign material by appropriate hand tools such as chisel, hammer or L hooks.

Note 1: - (a) After cleaning the joints thoroughly, it shall got approved from GE before progressing further. (b) Removing the existing sealing compound from the edges, bottom and sides of the joints by cutting edges, bottom and sides of the joints 1 mm of the existing construction joints (upto the full depth of 40mm (average)) by mechanical tool (diamond cutter) to make the cross section of joint truly rectangular. (c) Cutting the edges/sides/bottom of joints by using diamond cutter only and clean surfaces shall got approved by GE, after cleaning process, primer and joint filling shall be done in presence of Engineer-in-Charge. (d) Once again cleaning the joints with compressed air and applying two priming coats upto the full depth and width of the existing joints after an interval of 30 minutes to complete prepared surfaces of the joints. (e) Filling the closed polyethylene backup rod 20 to 40 mm dia (as applicable to joints) of make ELECON or M/s Supreme Industries Ltd and applying bond breaker tape to top of backup rod for complete width of joint and filled with polysulphide or polyurethane based sealant (minimum depth of sealant above backup rod shall be 15mm) all as per manufacturer's instruction including applying masking tape on edges of joints to prevent accidental spillage of sealant on top surfaces and removing the tape after sealant is applied, complete ass as specified and as directed.

Note 2: - (a) Masking tape shall invariably be used on both sides of the joints and before further progressing of joint shall be got approved by Engineer-in-Charge a panal recovery of Rs. 20.00/ RM shall be effected for both sides if masking tape not found used for joint filling. (b) Material shall confirm to BS (Make: FOSROC (COLPOR-200 gray)/Chemtallraj India Pvt. Ltd (RALLITHANE)/STP Ltd (Shalifex PU)/CICO/Cippy poly seal/CHOKSEY. (c) Electric supply shall be arranged by the contractor at his own arrangements and rate quoted for the item deemed include the same.

Material & Labour for cutting the edges of the cracks into V shape upto 15mm to 20mm wide and 25mm to 30mm deep and removing the old/all loose material to a distance n.exc 100 mtrs including cleaning the cracks thoroughly with help of blower and filling the cracks with rubberised cut back bitumen complete all as specified and directed by Engineer-in-Charge (Crack should be refilled upto top if settlement occurred in crack with in 25 hrs after first time filling).

Material & Labour for repair to broken edges/corners/cracks of any width in concrete/Rigid pavement by cutting grooves in rectangular/square form with hand tools/diamond cutter upto a depth of 25 mm including removal of all loose and foreign materials to a distance exceeding 50 m and not exceeding 250 m and cleaning of grooves by means of compressed air complete all as specified and directed so as to remove all dust, dirt, sand and foreign material with applying primer coat and filling with component system mixture/chemical as per manufacturers instructions complete all as specified and directed.

Material & Labour for preparation of black top surface by wire brushes for removing caked mud etc sweeping with brooms and finally fanning cleaned surface to remove all loose dust etc. and wetting the surface with water as directed by Engineer-in-Charge, applying polymer modified emulsion with mechanical sprayer @ 0.3 Kg (0.15 Kg Solution + 0.15 Kg water)/Sqm mix with water 1:1 as directed by Engineer-in-Charge.

Preparing of old concrete surfaces and painting lines, dashes, arrows and letters etc exceeding 10 cm width road marking paint white or golden yellow by using water based paint complete all as specified and directed.

Demolition of cement concrete (Unreinforced) in ground floors and paving n.exc 15cm thickness (below or above ground level) completed all as specified and directed.

Removing excavated material at a distance exceeding 1.5 KM and not exc 5 KM and depositing where directed at a level above the starting point complete all as specified and directed.

Material & Labour 200 mm thick (spread thickness) soling with broken stone of guage 100 to 50 mm spread and levelled interstices filled surfaces formed and rolled with 8 to 12 tonne power roller complete all as specified.

Material & Labour Plain cement concrete 1:4:8 type D-2 using 40 mm graded stone aggregate in foundations, filling and mass concrete including sub base of floors complete.

30mm thick sand cushion with clean river sand duly clear of residual, organic and deleterious materials spread evenly to uniform thickness laid over DLC layer as specified and directed.

Material & Labour 60mm thick Machine Pressed Precast Concrete Interlocking Paver Block any shape confirming to IS 15658-2006 of M-35 Grade with grey cement and no Pigment including dismantling of old broken interlocking tiles.

Material & Labour PCC 1:2:4 type B-1 using 20mm graded stone aggregates in side of paver tiles rounded or chamfered on edges complete.

M/S BALI AGENCIES (BID ID -3413891)

M/S ABBAS M. ENTERPRISES (BID ID -3413927)

MS Ghulam Hassan and Sons (BID ID -3411748)

IR Infrastructure (BID ID -3414712)