PROVN OF EPOXY FLOORING IN BUILDING NO. P-25 (ELECTRICAL SHOP ANNEXURE), T-48 (PAINT SHOP), P-27 (INTEGRATED MACHINE SHOP), P-26 (FRP SHOP) AT NSRY, NAVAL BASE KOCHI

Amount

Dismantling floor, hearth or wall tiling including cement mortar bedding (but not backing), removing serviceable tiles to store and rubbish off the premises.

M&L for PCC 1:1.5:3 type A1 using 20mm graded stone aggregate as in mass concrete/leveling course in flooring complete all as specified and directed by Engineer-in-Charge.

Removal of existing epoxy flooring and removal of debris out side the MD land complete all as specified and directed by Engineer-in-Charge

Providing and applying, fully bonded, pre-applied, Sikaproof 312 HDPE SG IN / or equivalent composite waterproofing sheet membrane system with thickness of 1.2 mm with sand finish at top.HDPE film thickness > 0.8 mm and HDPE membrane composite ≥ 1.20 mm The membrane should have strong bonding property between the top sanded layer and fresh concrete, so that there is no lateral water migration between membrane and the structural concrete of underground structure. The overlaps min. 80 mm on side laps which.End laps the sand is removed by hot shoveling to a width of 80 mm and there upon the clean band is overlapped using double sided tape. The membrane shall have Resistance to static puncture ≥ 1000 N (ASTM E154) Tensile strength ≥ 25 MPa (film) (ASTM D412 mod) Elongation ≥ 550% (ASTM D412 mod), Adhesion in peel ≥ 900 N/m (ASTM D903 mod), Joint peel resistance ≥ 1500 N/m (ASTM D1876), Foldability at low temperature Unaffected at -23 °C (ASTM D1970) Water absorption < 0.5% (ASTM D570), Water tightness > 71 m of hydrostatic head (ASTM D5385 mod),Permeability to water vapour < 0.10 ng/Pa-s-m2 (ASTM E96, method B) Make: Sika/ FOSROC or equivalent.

Providing & applying of a 4 component, seamless, solvent-free polyurethane concrete flooring system Ucrete MF to have a smooth, even, matt finish matching the following performance properties; -mixed density more than 1900kg/cu.mtr, -abrasion resistance class of AR0.5 as per BS 8204-2 -Static Modulus of Elasticity of 3.3x10^3 Mpa and Toughness of 96.7x10^3 Mpa as per Modified ASTM C469/C469M -Coefficient of thermal expansion of 3.6 x 10^-5/oC as per ASTM C531 -Shore D hardness of 80 -Tensile strength of >7Mpa -Flexural strength of >20Mpa -Adhesion to concrete of more than 2Mpa or until concrete fails -slip resistance classification 35 as per EN13036-4 -Fire resistance classification of Bfl-S1 as per EN 13501-1:2002 -Surface spread of flame of CLASS 2 as per BS476, Part 7 -Cure time of 12 hours for foot traffic and 24 hours for vehicular traffic at 30 degree C chemical resistance capable of withstanding resistance to spillages of oil, grease, jet fuel, aviation fuel like skydol. Reference of working in a similar environment or environment subjected to hard wheeled continuous movement with the floor performing for not less than 6 years without any maintenance coating requirement to be applied at a thickness of 3mm over a 1mm scratch as per the manufacturer's application guidelines. Make: Sika/Fosroc/Asian paints or equivalent.

Makeing 'V' groove of 5mm wide and 5mm deep over crack line by electrically operated angle grinder with diamond concrete saw blade and cleaning it by air blower as directed by Engineer-in charge. Sealing of exposed 'V' groove of 5mm deep and 5mm wide with solvent-free, moisture tolerant, thixotropic, two part structural adhesive and epoxy repair mortar cum surface levelling mortar. Product: Sikadur®-31 IN. Yield: 0.6 Itr/kg. Product requirements: Conforms to ASTM C 881-78, Type 1, Grade 3, Class B+C; compressive strength > 60 N/mm2 (14 days) according to ASTM C 881; bond strength > 11 N/mm2 (7 days) according to ASTM C 882.Make: Sika/ Asian paints or equivalent.

AMRITH ENGINEERS (BID ID -3233284)

Bell Builders (BID ID -3227635)

K THOMAS AND COMPANY (BID ID -3233899)