cement mill fdn4-strengthening-1

8/9/2019 Cement Mill FDN4-Strengthening-1

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Ref: Navinatam/14-15/107 dt 20-01-2015

Ambuja Cements Ltd

Unit-ROPAR

Subject:- Strengthening of Cement Mill No 4 Foundation

Dear Sir,

As per site visit, study of NDT report and recommendations and discussions held with yourgood self, we propose the following system for strengthening of Cement Mill No 4

Foundation.

Technical Specification:

I- Surface preparation with mechanical tools to expose bare concrete and

achieve open pore structure and Impregnation with two liberal coats of

MONOPOL -High Molecular Weight Polymer (LV Grade) Grout

Monopolis a low viscosity high molecular weight thermoset polymer. Due to its low viscositycracks and honeycombs in concrete are filled upto full depth of concrete.

TYPICAL APPLICATIONS :For strengthening honeycombed concrete, cracks in RCC, rehabilitation of fire and explosiondamaged structures, sealer for concrete bridge decks, industrial floors, terraces, foundations,etc. repairs of TG foundations, Crusher foundation, Polymer impregnated concrete applications,for sealing cracks in concrete roads.UNIQUE ADVANTAGES :By virtue of low viscosity Monopol penetrates into the concrete even through fine hair cracks

and strengthens the matrix.Seals cracks/honeycombs in concrete under very low pressure of 5 10 Psi.

Grouting can be done by gravity pouring/pressure grouting.Excellent adhesion and chemical resistance.APPLICATION PROCEDURE:1. Surface preparation is an essential part of the application. It is necessary to clean and dry theconcrete surface prior to use.2. Mix Monopol as specified and use it for injection/pouring within scheduled pot life.3. Curing in air for 24 hours prior to use.TECHNICAL DATA:Base High Molecular Weight PolymerMix ProportionBase : Curing Agent975 gms. : 25 gmsToxicity Non Toxic on cure

Odour Non obstructiveViscosity 3 5 cpsApplication By gravity pouring / pressure grouting

Area = 30 Sqm approx


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I I- TREATMENT OF CRACKS WITH LOW VISCOSITY HIGH STRENGTH

EPOXY GROUTArea = 30Sqm

STEP 1: IDENTIFY THE CRACK LINES AND PREPAREUsing a sharp chisel/cutting wheel, wide chase along the entire length ofcrack to a minimum size of 5mm x 10 mm. The chase must be square shapedand deeper than it is wide.

STEP 2: Seal with Epoxy Putty

STEP 3: Fixing nipples/Ports at a distance of 300mm c/c along crack length.Approximate Length of cracks=30M, No of Nipple/Ports =100 Nos

STEP4: Pressure Grouting Low Viscosity High strength Epoxy groutEPCO KP/HP-250-SLV-Super Low Viscosity Epoxy InjectionGrouting Systeminto the fixed ports with the help of Electric grout Pumpuntil refusal starting from one end and moving to complete all ports.

STEP 5: Removal of all ports and filling of holes with epoxy putty.

III-TREATMENT OF FOUNDATION WALLS SURFACE AREA WITH CARBON

WRAPPING

STEP 1: Surface preparation and mechanical sanding of the surface to

even out any variations.

STEP 2: Epoxy Putty

STEP3: Primer Coat for Carbon wrap system

STEP4: Laying one layer of Carbon Fibre Cloth

STEP 5: Application of Saturant Coat on the spread Carbon Fibre Cloth

STEP6: Laying second layer of Carbon Fibre Cloth

STEP 7: Application of another Saturant Coat on the spread Carbon Fibre

Cloth

STEP8: Fixing Mechanical Fasteners on the Carbon Fibre Cloth of HILTI

Make by Bullet Technology @ 300mm c/c both ways

STEP 9: Application of PU based protective coating on the carbon fibre

wrapping application


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Area = 30Sqm

Mobilisation Time : 10days

Work Duration: 96 Hrs

Commercials:

S. No Description Unit & Qty Rate

(Rs/ unit)

Amount

(Rs))

1 Surface preparation for Monopole 30Sqm 200 6000.00

2. Application of Two coats of

Monopole

30 sqm 800 24000.00

3. Cracks chase cutting and sealing with

Epoxy Putty

30RM 300 9000.00

4. Fixing Mechanical Pakers/Nipples

after Drilling to desired depth

100 Nos 900 90000.00

5. Injecting Low viscosity High Strength

Epoxy Grout

100 Nos 1000 100000.00

6. Carbon Wrapping two layers

including Primer and saturant coats

30Sqm 8000 240000.00

7. Bullet Mechanical anchors of Hilti 1000 Nos 100 100000.00

8. PU based protective coating 30Sqm 600 18000.00

Total= 587000.00

Lump sump Discounted rates for Area =30sqm @All Complete @ Rs. 500000.00 consisting

of the above operations,

Any other query at your end will attract our utmost attention at all times.

Thanking you,

Regards,

FOR NAVINATAM CONSTRUCTION TECHNOLOGIES PVT LTD

Er. Devinder ChawlaDirector09216515590/09814115590

cement mill fdn4-strengthening-1

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