Refurbishment of Expansion joints of Main Plant buildings

Amount

Dismantling / breaking / removing of screed concrete/ BBC (Brick Bat Coba) / RCC(Reinforced Cement Concrete) by mechanical means . Disposing the generated debris, waste, up to a lead of 2000 to 3000 meters from the place of work & cleaning the work area, etc. complete all as directed by engineer-in-charge at all locations.

Expansion Joint Preparation for carrying out of treatment as per item no. 3 : Carrying out surface preparation like removing existing sealant in expansion joint, chipping, micro chipping, grinding, micro grinding over dismantled area, surface to be treated shall be workable dry and free from oil, grease and loose particle and making area level by using Polymer mortar / Epoxy mortar ( [as per technical specification 2ai.e. Density of 1.65 gm/cm3, mixing ratio parts by weight is 5:1, minimum application temperature may 8 to 10 ºC, pot life of material may 20 to 25 minutes. the product should match following properties i.e. fine grade concrete repair mortar, in powder form, shelf life shall be 12 months from date of manufacture and as per technical specification 2b i.e. Density 1.98gm/cm3, pot life shall be 30 minutes, minimum application temperature =50ºC, mixing ratio by weight of cement shall be 13%-14%, compressive strength at 28 days may 500 Kg/cm2 , flexural strength at 28 days may 70 Kg/cm2 Pull out bond strength 6.6 Kg/cm2 and 3.4 Kg/cm2 for 12 mm dia rod and 28 mm dia rod respectively and failure in steel and concrete respectively, maximum processing time shall be 30 min and change in volume 1.84% after 1, 7 ,& 28 days. Product characteristics are as follow, Material meant for micro-concrete / grout, in powder form, shelf life 6 months from the date of [As per technical specification 2Ci i.e compressive strength of 39.7 N/mm² and 56.3 N/mm² in 7 and 28 days respectively, Flexural strength 7.3 N/mm² and 7.8 N/mm² in 7 and 28 days respectively, Dynamic E-modulus 3.19x104 N/mm² & 3.37x104N/mm² in 7&28 days respectively, liquid contents to achive Heagermann flow table 13.5% for 15cm flow and 15.5% for 21 cm flow, Setting time: Initial 7.05 hours and Final 12 hours at 21 cm flow, bleeding test 0% by weight test at 21 cm flow, Diffusion resistance 97.1 M at 21 cm flow, water penetration under pressure 0% under 1.5 kg/cm2 & 2 kg/cm2, Chloride content shall be 0% and Bonding strength 4.04 N/mm² . Product characteristics are product shall be crystallization based waterproofing liquidapplied membrane syatem, in powder form, shelf life 12 months from date of manufacture.& as per technical specification 2 Cii i.e. Bulk density 2.39Kg/dm3 , flow table spread 21 CM, Air content 3.1%, Adhesive strength in tension: specimen stored at 23 degree celcius & 50% relative humidity is 1.9 N/mm2 in 7 days, 2.4 N/mm2 in 28 days, 3.6 N/mm2 in 90 days, compressive strength of mortar system 26 N/mm2 in 2 days, 36 N/mm2 in 7 days, 55 N/mm2 in 28 days. flexural strength of mortar system 5.9 N/mm2 in 2 days, 7.0 N/mm2 in 7 days, 11.0 N/mm2 in 28 days. and manufacture.]. as per site condition and including a coat of crystalline waterproofing slurry on broken surfaces adjoining expansion joint querying etc. Product characteristics are as follow, product meant for acrylic copolymer used as bonding agent & polymer component in repairs, available in liquid form, shelf life 9 months from the date of manufacture.] Disposing the generated debris, waste, up to a lead of 2000 to 3000 meters from the place of work & cleaning the work area, etc. complete all as directed by Engineer-in-charge , technical specification, manufacturers instruction and procedure at all locations.

Refurbishment of Expansion Joint by providing and laying of treatment as per specification mentioned against each sub items below. 25mm to 50 mm wide joints: Providing and applying Alkaline resistant coating [as per technical specification 3a i.e Availability in liquid form(Composition of 2 component) workability period 25 min. approx., rainproof after 6 hours approx., ready to walk on 16 hours approx., next coat to be applied 16 hours approx., Usage for primer-500 g/m2 as a alkaline protection 400-600 g/m2 approx.] over prepared surface including surface preparation, Sprinkling Quartz sand/Silica Sand[0.3 to 0.7 mm] for better adhesion and bonding of further coat, along with liquid applied polyester resin base, flexible UV resistant waterproofing system. [as per technical specification 3b i.e. Available in 3 component composition, flexible polymer resin, water vapour diffusion factor 10960 µ, resistance to wind loads >=50kPa, external fire performance i.e. classification in accordance with EN 13501-5 2006: DIN 4102-7 - resistance to spreading fire and radiant heat is : BROOF(t1), Reaction to fire-E (Classification in accordance with EN 13501-1 2006: DIN 4102-1. Classification is done in class B2.), statement to dangerous substance: Does not contain any, working life -W3, climatic zones M&S, Imposed loads-P1 to P4, roof slope- S1 to S4, Lowest surface temperature -TL4, Highest surface temperature -TH4, shelf life - 12 months, workability period 15 min. approx, rainproof after 30 min. approx, can be walked on 6 hours approx., cured after 3 days, next coat can be applied after 6 hours. ] with fleece of 165 GSM in two layer system expansion joint, having first layer of fleece 26.25 cm and laying Polyethylene rod [Bond Breaker rod, as per technical specification 3c, i.e. excellent chemical resistance and absorption, unaffected by climatic fluctuations, melt flow index 3.3-3.8 g/10 min, Density@23º Celsius is 0.922-0.924 g/cm3 crystalline melting point 111ºC, Vicat Softening Point 93ºCelsius, tensile strength @yield MD 12MPa TD 10MPa, Tensile strength @break MD 19 MPa TD 21MPa, Elongation break MD 450% TD 550%, impact strength 160 g, coefficient of friction 0.09, Haze 8%, Gloss @60º Celsius 100 gu, clarity 70%] of suitable size and second layer of fleece 35 cm. [as per technical specification 3d i.e. composition of fleece based on polyester, weight 165 g/m2]. Including reducing the expansion joint gap by 25-30 mm wide by brick bat coba / concrete [Refer Item No.: 5] at floor level with Polyethylene rod ( Bond Breaker rod) and laying pourable grade polysulphide sealant, [as per technical specification 3e i.e. specific gravity 1.7 at 20 degree Celsius, mixing ration 92:08 pbw, pot life 60-160 min, Initial cure time160-360 min, full curing time 7 days, shore A hardness 14, shear strength 0.3MPa, Tensile strength 0.22 MPa, Application tempreture+5ºC to 45ºC , service temperature -40ºC to +80ºC , Elongation 450%, MAF 25%, UV resistant-Good, elastic recover >90%] and finishing the same with existing slope level to make ease flow of water. Disposing the generated debris, waste, up to a lead of 2000 to 3000 meters from the place of work & cleaning the work area, etc. complete all as directed by engineer-in-charge at all locations. NOTE : (1) Brick bat coba will be paid under item no-5, (2) Execution of the job shall be carried out as per technical specification and work procedure mentioned in tender.

55 mm to 100 mm wide joints : Providing and applying Alkaline resistant coating [as per technical specification 3a - technical details as described in item 3.1] over prepared surface including surface preparation, Sprinkling Quartz sand/Silica Sand[0.3 to 0.7 mm] for better adhesion and bonding of further coat, along with liquid applied polyester resin base, flexible UV resistant waterproofing system. [as per technical specification 3b - technical details as described in item 3.1] with fleece of 165 GSM in two layer system expansion joint, having first layer of fleece 35 cm and laying Polyethylene rod ( Bond Breaker rod, as per technical specification 3c -technical details as described in item 3.1) of suitable size and second layer of fleece 52.5 cm. [as per technical specification 3d-technical details as described in item 3.1]. Including reducing the expansion joint gap by 25-30 mm wide by brick bat coba / concrete [Refer Item No.: 5] at floor level with Polyethylene rod ( Bond Breaker rod) and laying pourable grade polysulphide sealant [as per technical specification 3e - technical details as described in item 3.1] and finishing the same with existing slope level to make ease flow of water. Disposing the generated debris, waste, up to a lead of 2000 to 3000 meters from the place of work & cleaning the work area, etc. complete all as directed by engineer-in-charge at all locations. NOTE : (1) Brick bat coba will be paid under item no-5, (2) Execution of the job shall be carried out as per technical specification and work procedure mentioned in tender.

105 mm to 150 mm wide joints : Providing and applying Alkaline resistant coating [as per technical specification 3a - technical details as described in item 3.1] over prepared surface including surface preparation, Sprinkling Quartz sand/Silica Sand[0.3 to 0.7 mm] for better adhesion and bonding of further coat, along with liquid applied polyster resin base, flexible UV resistant waterproofing system. [as per technical specification 3b - technical details as described in item 3.1] with fleece of 165 GSM in two layer system expansion joint, having first layer of fleece 52.5 cm and laying Polythylene rod ( Bond Breaker rod as per technical specification 3c - technical details as described in item 3.1) of suitable size and second layer of fleece 70 cm. [as per technical specification 3d - technical details as described in item 3.1]. Including reducing the expansion joint gap by 25-30 mm wide by brick bat coba / concrete [Refer Item No.: 5] at floor level with Polythylene rod ( Bond Breaker rod) and laying pourable grade polysulphide sealant [as per technical specification 3e - technical details as described in item 3.1] and finishing the same with existing slope level to make ease flow of water. Disposing the generated debris, waste, up to a lead of 2000 to 3000 meters from the place of work & cleaning the work area, etc. complete all as directed by engineer-in-charge at all locations. NOTE : (1) Brick bat coba will be paid under item no-5, (2) Execution of the job shall be carried out as per technical specification and work procedure mentioned in tender.

Providing and applying Alkali Resistant Resistance primer [As per technical specification 3a - technical details as described in item 3.1] in case of over laying coat or coarse coming over joint treatment to protect the treatment. Disposing the generated debris, waste, up to a lead of 2000 to 3000 meters from the place of work & cleaning the work area, etc. complete all as per technical specification and as directed by engineer-in-charge at all elevations & locations.

Providing and laying Brickbat coba of various thickness in cement ; sand (1:4) with integral waterproofing admixture [as per technical specification 4a - i.e. 1% to 2% by the weight of cement but not less than 3 kg/CuM of concrete, shelf life of product 12 months conforms with IS 2645]at the dosage of 500 gms per bag of cement and chopped glass roving fibres [as per technical specification 4b i.e. sizing code: Japan 7065, product description : chopped glass roving, filament diameter -14 microns, LOI-1%, Moisture - 0.9%, Specific gravity - 2.68, softening point -845oC] added of the dosage 85 gms per bag of cement including finishing the top with IPS marked with false squares laid to proper slopes, curing etc. Including application of bond coat [as per technical specification 4c i.e.- Density 2.1 G/cm3 mixing ratio pbw 100:20 to 25, pot life 20 min., minimum application temperature +8 degree Celsius, consumption 1000 to 1100 g/m2 , product meant for mineral corrosion protection and bond coat, available in powder form, shelf life 12 months from date of manufacture.] at the interface of old and new layer. Disposing the generated debris, waste, up to a lead of 2000 to 3000 meters from the place of work & cleaning the work area, etc. complete all as directed by engineer-in-charge at all locations.