8997/E8

Material and labour Chipping of unsound/weak concrete materials of from column/beam with standard power driven percussion type or pneumatic chiesel of standard make including tapering all edges, making square shoulders of cavities etc upto four storey height of building including necessary scaffolding and safety measure complete all as specified and as directed by the Engr-in-Charge.

Material and labour Chipping of unsound/weak concrete materials of from slabs/chajja/ fin fascia with lightly packing with standard power driven percussion type or pneumstic chiesel of standard make materials by air blasting or sand blasting including tapering all edges, making square shoulders of cavities etc upto four storey height of building including necessary scaffolding and safety measure complete all as specified and as directed by the Engr-in-Charge.

Material and labour Removing concrete all around reinforcement including behind of reinforcement bars to give an average clearance of 25mm (but not less than 15mm clear air gap) by manual methods (hammering and using wire brushes, chieselling etc.) and applying alkaline rust removing chemical followed by removing rust including from behind the reinfircement bars by emery paper and cleaning the area throughly by water and alllow it to dry as per manufacturer's instructions to provide totally rust free finished steel surfaces, length of reinforcement bars cleared of concrete shall be measured for payment including upto four storey height of building upto 12mm dia of bars complete all as specified and as directed by the Engr-in-Charge.

Material and labour for applying single coat of epoxy bond adhesive on prepared non metallic surface (existing surface) by using brush as per manufacturers instruction / specification upto any height including necessary scaffolding and safety measures complete all as directed by the Engr-in-Charge.

Material and labour Removing concrete all around 16 mm dia reinforcement including behind of reinforcement bars to give an average clearance of 25mm (but not less than 15mm clear air gap) by manual methods (hammering and using wire brushes, chieselling etc.) and applying alkaline rust removing chemical followed by removing rust including from behind the reinforcement bars by emery paper and cleaning the area throughly by water and alllow it to dry as per manufacturer's instructions to provide totally rust free finished steel surfaces, length of reinforcement bars cleared of concrete shall be measured for payment including upto four storey height of building upto 16mm dia of bars complete all as specified and as directed by the Engr-in-Charge. Make:- Fosroc/Elantas beck/Kunal conchem/ Sika/ Hindcon Chemicals Ltd/ Icannano

Supply and application Epoxy Zinc rich primer on the prepared reinforced surface by brush, the primer shall have a minimum specific gravity 1.75, minimum wet film thickness/coat 100 microns & dry film thickness/coat 40 microns. Minimum adhesive bond strength with steel is 1.5 N/mm2 upto upto four storey height of building complete all as specified and as directed by the Engr-in-Charge. Make : Fosroc/Elantas beck/Kunal conchem/ Sika /Hindcon Chemicals Ltd/ Icannano

M&L Pressure guniting at a pressure not less that 6Kg/Sqcm to surface of column, beam, ceiling, facia and similiar structural members in polymer modified concrete with mix ratio 1:1.5:3 (1 cement : 1.5 Coarse Sand : 3 Stone aggregate of 10mm nominal size) admixed with acrylic latex polymer such as Hind Styrene BR/Nitobond SBR (M/s Hindcon) or equivalent from M/s Pidilite/Forsoc @ 3.00 Kg per Sqm and plasticiser Hind Plast Super/Conplast SP 337 (M/s Hindcon) or equivalent from M/s Pidilite/Forsoc @ 100Gms per Sqm for an average thickness of 50mm (the concrete to be applied when the bonding coat is still green) including material and labour, scaffolding and formwork etc. as per manufacturer's specification complete all as per direction of Engineer-in-Charge.

Supply and Application Free flow non-shrink cementitious micro concrete of grade M50 to the affected beam, column etc above 25 mm and upto 60mm thickness (average) where major spalling has taken place even the core of concrete affected. The Micro concrete shall have a minimum 1 day compressive strength of 10 MPa and 28 days strength of 50 MPa, Minimum tensile strength 5 N/mm2 @ 28 days, minimum Flexural strength 5 N/mm2@ 28 days tested as per BS 4551-80, Expansion characteristics Unrestrained expansion as per ASTM C827-1987 1 to 4%. upto only height of building complete all as specified and as directed by the Engr-in-Charge. Make:- Fosroc/Elantas beck/Kunal conchem/ Sika/ Hindcon Chemicals Ltd/ Icannano

Supply and Application Two component structural grade polymer modified reinstatement mortar where local spalling has taken place or shuttering is not possible. The Mortar can be applied from a minimum of 5mm to 12.5mm thickness in smaller vertical pockets and upto 100 mm thickness in horizontal applications. The Mortar should have a minimum compressive strength 12 N/mm² in 1 day and 45N/mm² in 28 days. Minimum Flexural strength should be 8 N/mm² in 28 days. A modified styrene butadience emulsion for use as a bonding aid and gauging liquid for cementitous systems to be mixed with cement slurry before the application of microconcrete to be used @ 6 lit/bag of cement. The bonding agent should have minimum compressive strength 24 N/mm² Minimum Tensile strength 3.5 N/mm², Minimum Flexural Strength 6.5 N/mm² complete all as specified and as directed by the Engr-in-Charge upto any height of building including necessary scaffolding and safety measure. Make : Fosroc/Elantas beck/Kunal conchem/ Sika/ Hindcon Chemicals Ltd/ Icannano

Material and labour applying Concure LP 90 or equivalent over concrete and cement plaster as curing compund as per manufactures instructions including necessary scaffolding and safety measures complete all as specified and as directed by the Engr-in-Charge. Make : Fosroc/Elantas beck/Kunal conchem/ Sika/ Hindcon Chemicals Ltd/ Icannano