Repairs maint to various joints, filling with polyurethane and sealing compound Grade B and reapirs of pot holes with epoxy filling at rigid pavement of runway and dispersal area at AF Station Tezpur under GE AF Tezpur

Amount

M&L for raking out existing joint Sealant from expansion joints with using appropriate tools and mechanical means of joints of size 20-25 mm wide and 20 mm deep of sealant including taking out compressible backer rod of dia 25-30 mm ( total depth 45-50 mm) from joints, cleaning the joints of sides, bottom and removing the loose particles of sealant dust etc, with suitable tools and mechanical driven machine, drying the joints surface of moisture completely by means of mechanical driven air blower. Applying masking tape both sides of edges of joints to prevent accidental spillage of sealant applying one coat of primer and insert compressible cross linked polyurethane form back-up rod, closed cell, medium density of appropriate dia as per site condition, putting polyurethane joint sealant of approved make in joints as per manufacturer instruction, removing masking tape after application of sealant joint and cleaning the surface and Complete all as specified and as directed.

M&L for raking out existing joint sealant from Construction/ Dummy joints with using appropriate tools and mechanical means of joints of size 10-12 mm wide and 10 mm deep of sealant including taking out compressible backer rod of dia 12-15 mm (total depth 22-25 mm) from joints, cleaning the joints of side, bottom and removing the loose particle of sealant dust etc, with suitable tools and mechanical driven machine, drying the joints surface of moisture completely by means of mechanical driven air blower. Applying masking tape both sides of edges of joints to prevent accidental spillage of sealant. Applying one coat of primer and insert compressible cross linked polyurethane form back up rod, closed cell, medium density of appropriate dia as per site condition, putting polyurethane joint sealant of approved make in joints as per manufacturer's instruction, removing masking tape after application of sealant joint and cleaning the surface and complete all as specified and as directed.

M&L for cutting pot holes/corners cracks of existing rigid pavement to depth of 25 mm to 36 mm made into regular shape and size, cleaning the cut portion with hard bristle brushes, water under pressure and drying the clean surface with driven air blower. Removing all the foreign materials to a distance exc 100 mtr but n exc 200 m from working site. Preparation of epoxy resin materials of approved make with mixing araldite and hardener in proportion as per manufacture instruction. The cut portion of rigid pavement applying primer with epoxy resin all sides and bottom of cut portion before putting epoxy mortar. Filled the cut portion of rigid pavement with epoxy resin mortar (1:5) one part of epoxy resin and five part of quartz sand, leveled the filled epoxy mortar to level surface match with existing surface complete all as specified and as directed.

M&L expansion filler board 18 to 20 mm thick pre-moulded and high performance joint filler board use in expansion joint of runways and taxi tracks of concrete slabs complete all as specified and as directed.

M/S A K MITRA

KAILSON