REPAIRS TO JOINT FILLING, PME AND CRACKS IN FLEXIBLE SURFACES, EPOXY REPAIRS TO RIGID SURFACES ETC AND CONNECTED B/R REPAIR WORKS AT AIR FORCE STATION UDHAMPUR

Amount

Raking out existing filling in expansion joints, construction joints, dummy joints upto 25mm depth including scrubbing of joints with diamond cutter machine(Heavy duty) or gas flame torch with heat application to complete remove existing sticking sealing compound incl old back up rod / Bitumen from the sides , top and bottom of joints and totally cleaning the top surface of joints with brush and finally fanning with compressed air to make the joints free from all loose materials i.e dirt/dust etc to entire satisfaction of Engr-in-Charge, applying with provision of bond breaker tape on bottom of joint and filling depth of joint with provision of polyethylene back up rod of suitable dia to ensure tight packing so that no gap or voides exist at the top of back up rod. The deteriorated edges of concrete joints (included upto 50mm either sides of the joints) shall be made good to true line with provision of polymer concrete. Joints (16mm to 24 mm wide) shall be sealed with provision of polyurethane based sealant with primer and filling the joints with polyurethane based sealing compound as laid down in manufacturers instructions and as directed by Engr-in-Charge. Minimum clear depth of sealant above back up rod shall be10 mm complete all as specified and as directed. NOTES:-(i) Size of joints shall be made by cutting; in case not available at site. (ii) If width of joints by cutting exceeds as specified above, the same shall be filled by polyurethane based sealant and no extra payment shall be made. (iii) Remaining depth at bottom (after keeping provision for back up rod & sealant) shall be filled with sand and cost of same shall be deemed included in item rate quoted by tenderer. No extra payment for provisioning of sand (if any) shall be made. (iv) Masking tape shall be applied on edges of joint to prevent accidental spillage of sealant and shall be removed after filling with sealant. Cost of the same shall be deemed included in item rate quoted by tenderer. (v) Expansion joints, construction joints, dummy joints upto 25mm depth including scrubbing of joints with diamond cutter machine(Heavy duty) or gas flame torch with heat application to complete removal of existing sticking sealing compound incl old back up rod / Bitumen from the sides , top and bottom of joints and totally cleaning the top surface of joints with brush and finally fanning with compressed air to make the joints free from all loose materials ie dirt/dust etc complete all as specified and directed.

All as per srl item No 1 above but joints 25 mm to 30mm wide and 12mm minimum clear depth of sealant above back up rod complete all as specified and directed by Engr-in-Charge.

All as per srl item No 1 above but joints 31mm to 35mm wide and 12mm minimum clear depth of sealant above back up rod complete all as specified and directed by Engr-in-Charge.

Repair to popped out sealant joints, corner spot hole in concrete slab by cutting, chiseling with heavy duty mechanical cutter side perpendicular to a minimum of 3 cm and cleaning off all loose or broken materials to a distance exc 250 mtr, cleaning and washing the surfaces with acid solution ( a mixture of hydrochloric acid and water in equal proportion (emulsion 7 ltr per 10 square mtr) application of primer to dried surface of sides and bottom and surface with Epoxy treatment resin mortar (mixture of Adralite GY-257 vantigo and adradur HY -840 vatigo with quarts sand) incl form work where required complete all as specified and directed by Engr-in-Charge. Note :- (a) where the thickness is more than 5 cm, Epoxy resin mortar shall be applied in two layers. (b) Joints and brocken corners shall be cut by cutter and popped out /popped hole shall be cut by heavy duty mechanical cutter/chisel. (c) Cost of T&P, Hydrochloric acid etc is deemed to be incuded in quoted rates.

M&L for repair to cracks of width 2 to 8 mm in flexible surfaces by cleaning of all cracks with air compressor and make it free from dust and applying evenly blown hot bitumen of grade 85/25 in two coats with necessary interval to ensure complete filling/total filling of the gap in line with existing pavement, finally dry coarse sand mixed with cement in 1:1 ratio sprinkled on top complete to ensure uniform finish complete all as specified and directed by Engr-in-Charge.

Labour only for totally cleaning the top surface with steel wire brush and finally fanning with compressed air to making the surface free from all loose materials i.e dirt/dust etc and applying cold polymeric bitumen emulsion (PME) mopping of total cold liquid PME ( minimum 1 ltr & maximum upto 2 ltr per sqm for two coats after dilution with 50% water ), each coat diluted in the ration 1:1 (PME: WATER) and ensure uniform finish of runway complete all as per manufacturers instruction and complete all as specified and directed by Engr-in-Charge. Note:- The tenderer shall take into consideration for the following points while quoting his rate for the items:- (a) The work shall be carried out through authorized and qualified applicator of the manufacturer only. (b) Care shall be taken to fill wider gaps/cracks with 0.6mm to 2.36mm size coarse sand as per manufacturers instruction. (c) Workman ship & quality of work is as per satisfaction of user & Engr-in-charge.

Supply only cold polymeric bitumen emulsion (PME). Note: a) Only undiluted quaintly will be measured under this item. b) The item will be used against quantity of PME requiredabover item No 21 c) All material shall be deposited in AGE B/R-I store yard before start the work d) All empty drum also deposited AGE B/R office till complition of work.

Demolition of cement concrete of any description & in any position not otherwise specifically provided for (unreinforced) complete all as specified and directed by Engr-in-Charge.

Removing excavated material exc. 5.0 km but n exc. 10 km and depositing out side of MoD complete all as specified and directed by Engr-in-Charge.

Material and labour cement concrete work in pavement/hard-standing of flexural strength 40 Kg/per sq centimeter in field using 40 Kg of cement per cubic metre, complete all as specified , spread and compacted by using screed vibrator incl mixing of polyster triangula fibre @ 0.25% by weight of cement incl necessary formwork, T & P for bull nosing, rounding of edges, and finishing the surcaces etc complete all as specified and directed by Engr-in-Charge.

Supply only polyester triangular fibres with circumcircle dia 30-35 micro design for melting point 240-260 degree celcius and having specific gravity of 1.34 to 1.40 micron make reliance or equivalent confirmity to type-III fibre under ASTM-C 1116 complete all as specified and directed.

Finishing surfaces of quality concrete pavement by brooming with broom while concrete is green, complete all as specified and directed by Engr-in-Charge.

Supply only polyester triangular fibres with circumcircle dia 30-35 micro design for melting point 240-260 degree celcius and having specific gravity of 1.34 to 1.40 micron make reliance or equivalent confirmity to type-III fibre under ASTM-C 1116 comple

Forming 20 mm thick Expansion joints filled with pre-formed bituminous filler and top 30mm primed and sealed with sealing compound, Grade ‘A’ complete all as specified and directed by Engr-in-Charge.

SHIVAE CONSTRUCTION

DAVINDER SINGH

ASIA BUILDER

APARANA ENTERPRISES