Repairing cracks, spalled edges of joints, pot holes, damage concrete panel and refilling of joint with polysulphide joint sealing compound for the Apron, Taxiway and vehicular lane at R.V.S.T. Gwalior.

Removing and cleaning of Expansion/ Dummy/ construction joints with steel hook/metal raker and cleaning dust/dirt and old filler, loose material with wire brush and air blower, tools and machinery all complete i/c disposal of dismantled material including all lead and lift inside AAI premises as per direction and satisfaction of Engineer-in-charge.

Providing and laying backer rod of size 25 mm dia in the joints all complete as per specification & direction of Engineer-in-charge. Note: The type of material for backer rod shall be Expanded closed cell Polyethylene foam and shall conform to ASTMC-5249-95 or ASTMD 3575.

Providing and laying backer rod of size 15 mm dia in the joints all complete as per specification & direction of Engineer-in-charge. Note: The type of material for backer rod shall be Expanded closed cell Polyethylene foam and shall conform to ASTMC-5249-95 or ASTMD 3575.

Providing and fixing pre-moulded 25 mm thick joint filler in expansion joints of RCC roads/ CC pavements after making the joints dust free with high pressure air jet cleaners, all complete as per direction of the Engineer-in-charge. Note: Pre-moulded joint fillers shall be made of bitumen hot sealing compound impregnated fibre board having impregnation more than 35%, conforming to IS:1838 with a compressibility more than 25% for fibre board and IS: 1834 for hot sealing bitumen compound grade A.

Providing and laying in position polysulphide sealant of approved make conforming to BS-5212-1990 or IS 12118 Part 1 - (1987), in expansion/ construction/ dummy joints including preparing the surface, rounding off edges, applying 2 coats of approved primer compatible with the brand of polysulphide and preparing the surface and applying masking tape along the edge of joints to prevent accidental spillage of sealant on top surface and to give neat finish to the sealant and removing the masking tape after application of sealant and disposal of debris up to Airport premises etc. all complete as per direction of Engineer-in-charge & particular specifications. [Note : 1. For purpose of payment, quantity (Length X Width X Depth) of polysulphide sealant in cucm only will be measured & work shall be executed by authorized applicator. 2. Concrete pavement should be clean and dust free for Aircraft movement, nothing extra will be paid for cleaning.]

Preparing the damaged edges of expansion, construction and dummy joints all along the concrete panels : A. Proper making of edges by cutting, chipping, removing and cleaning all unsound/weak concrete material either at one side or both side of joints of pavement up to required width and depth as per specification/I.S. code or direction of Engineer-in-charge. B. Making edges of joint either at one side or both side with high strength quick setting epoxy mortar, three-component consisting of an epoxy resin, hardener and selected graded filler (min 50 MPa in 24 hours and min 70 MPa in 7 day) after application of 2 component epoxy primer of brands STP, Sika, BASF, Pidilite or as per approved make, accept traffic after 4 hours after pouring. Primming by Nylon stiffen brush, use glass panes shuttering board in-to joints of required sizes and finishing/texturing top surface as per specification and disposal of debris at designated location in Airport premises etc. all complete with materials and machineries as per specification and direction of Engineer-in-charge. (Note: 1. Work shall be executed by authorized applicator, Concrete pavement should be clean and dust free for Aircraft movement, nothing extra will be paid for cleaning. 2. The item shall be measured in terms of Quantity of epoxy mortar used in Kg. It includes cost of epoxy mortar, all preparatory works, glass pane shuttering, carriage, disposal of debris, cost of labour and all necessary T & P etc. The cost of primer shall be paid seperately as per item no. 7 )

Supply of 2 component epoxy primer of brands STP, Sika, BASF, Pidilite, STP or as per approved make as per direction and satisfaction of EIC.

Re-surfacing of rough concrete surface panel by applying fast setting high strength cemenetitious roadway patching compount Shalifix SC M of make STP, Choksey, Sika, Pidilite or as per approved make (High strength, 20 MPa in 24 hours and 55 MPa in 28 days). A. Surface preparation : Surface must be clean & free from dust, oils, grease curing compounds etc. that could impair adhesion. Excess laitance should be removed by light scrabbling, blasting or grinding and vacuuming to remove dust debris. Light oil and grease staining can be removed with proprietary chemical degreaser, followed by washing with clean water. B. Resurfacing of the damaged top surface by procurement and application of the appropriate construction chemicals mixed in mortar mixing machine for making homogeneous mixture in required ratio to the existing composite pavements, without violation of the NOTAM Rules and disposal of debris up to Airport premises etc. all complete as per specification and direction of Engineer-in-charge. Note: 1. Work shall be executed by authorized applicator, Concrete pavement should be clean and dust free for Aircraft movement, nothing extra will be paid for cleaning. 2. It includes cost of all works mentioned above including necessary T & P etc. The cost of cementeous compound and primer shall be paid seperately as per item no. 9 and 10 respectively.

Supplying of sealed packed Polymerised Elastomeric concrete compound (Shalipatch EC 10 of brand STP/Flex-O-Patch of Choksey chemicals/Delpatch of D.S Brown/ Pidilite/ Sika or equivalent approved make) of required shade, self leveling, three components developed in use with specially blend aggregates at site. The material supplied will not be more than two months of the manufacture date.

Supplying of primer of Shaliprime PUM of brand STP/Choksey/D.S Brown/Pidilite/Sika or equivalent of approved make for Elastomeric concrete compund at site. The material supplied will not be more than two months of the manufacture date.