DIBHALITE -LV

(for protective coating to CORRODED CONCRETE R.C.C. cum M.S.STRUCTURES,
CASTING(with fillers),POTTING,BONDING OF OLDTO NEW CONCRETE,
FOUNDATION GROUTING (Mortar).     

INTRODUCTION:

 DIBHALITE-LV is Solventfree epoxy formulation being extensively used as structural adhesive, as 
protective coatings and as repair mortars for rehabilitation and strengthening of corroded concrete 
structures.  They have been extensively used for repair of industrial structures subject to chemical 
corrosion, residential and office premises in marine atmosphere and for repair of damaged concrete 
in hydraulic structures.  Given below are the normal procedures in such cases.

In general, such corroded structures are treated by removing the cracked cover of the concrete elements and any loose concrete.  Subsequently, protective coating of reinforcing steel is applied to protect further corrosion of the rods with additional bars welded on, if necessary.  The removed portions of the concrete are then made good with a new cement plaster/new concrete/gunite layer after applying DIBHALITE-LV for bonding new to old concrete formulation to ensure a monolithic bond, which will enhance the effectiveness of the repair.Subsequently, protective coating , complete curing of the made up layer should be ensured.  As an alternative to new concrete/gunite layer/cement plaster, epoxy mortar of about 5 mm thick can also be applied. This is especially useful in places where conventional curing of concrete is not feasible.  Application of epoxy mortar treatment, however, is considerably expensive in comparison with new concrete/cement plaster.  Given hereunder  are formulations normally used for such purpose. 

TECHNICAL DATA ( Prominent Properties )

1  Ratio  


 :  

 Resin       part   1 PBV      1.0 PBW
Hardener  part   1 PBV      0.8 PBW
2  Pot life of mix 

:

 30-40 min. at 35`c.
3  Viscosity of mix

:

 2000-3500 CPS.
4  Coverage of mix

:

 Mild steel   50-60  sq. ft/per  coat  with  250  microns
Concrete   45-50  sq. ft/per  coat  with  250  microns
5  Curing of mix

:

 Gets  completely  cured  at  35`c  RT within 5-7 days
6  Visual  Appearance

:

 On complete curing ------ GLOSSY PALE YELLOW
7  Shelf life

:

 Min.12 months.stored at cool  and  dry  place  in sealed  Containers 

PROTECTIVE COATING TO REINFORCING RODS:

We recommend two coats  of  DL-LV  as per the proportionate cited.

The bars should be thoroughly  roughened and made free of rust prior to application. Apply first  coat as per the ratio cited above followed by  second coat, when the first coat is tack-free.  While the top coat is still tacky, quartz sand mix no.10 should be sprinkled so as to provide a rough finish.  Subsequently treatment can be carried out after curing  of coating for minimum period of 24 hours, preferably latest within 3 days.

ADHESIVE LAYER FOR BONDING OLD CONCRETE TO NEW CONCRETE / CEMENT PLASTER TO METAL SURFACE / GUNITE LAYER:

a)     For Old concrete to New concrete : { Reinforced bars }

Apply one coat of DL-LV to the MS bars and the cement plaster to be coated with DP-250  Sprinkle the fine sand on the both the coated  surface and allow to complete dry.  On  complete curing  new plaster can be carried out.

b)     For Cement plaster to Metal surface :   Apply one coat of DL-LV and sprinkle sand on the surface

EPOXY MORTAR FOR FLOORING :

PRIMER

:

 DIBHAPOXY-250      [ Application as cited in literature ]
MOTAR

:

 Approximate 5 mm Thickness
DIBHALITE - LV 180  GMS  [resin 100 & hardener 80 ]
QUARTZ SAND   No 10  900 GMS
COVERAGE

:

 10 kgs. Of Mortar per Sq. mtr.
SEAL COAT

:

 If required with different shade, DIBHALITE-TFC can be  coated.
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