SURFACE PREPARTAION

The surface shall be made free from all dirt, fungus, loose particles by using wire brush. The surface shall be cleaned with solvent like xylene, Toluene, Benzene, dilute hydro chloric acid.

B) CUTTING OF 'V'-Grooves : The V shaped groves shall be cut along the locations of all the visible cracks. The 'V'-Grooves shall be of size 5 mm as directed by the Engineer in charge.

 
 

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POROSITY AND VOIDS REDUCTION(BASE COAT APPLICATION)

Applying wetting agent consisting of acrylic monomer,co-polymer liquid and crystallization liquid as base on the prepared surface and V grooves and cracks etc

The concentrated crystallization liquid of specific gravity 1.09 is lightly diluted and applied on the prepared surface.The sodium acetate formed during the chemical reaction penetrates inside the pores of the concretz and  reacts with water to form crystals to block the pores of the concrete,thereby reducing water permeability.
       
 

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APPLICATION OF SEALANT / PATCHING MORTAR

Cracks will be sealed using suitable sealant or patching mortar. These make them ideally suited for joint treatment. Its adhesion is very strong & binds with the building materials such as concrete, and take care of expansion and contraction in the structures.
       
 
       

LEVELLING COURSE USING FLEXIBLECEMENTATIOUS. .

A concrete mixed in the ratio 1:1.5:3(1: op cement:1.5 quartz powder: 3 graded stone) is laid to make haunch at junction of parapet and roof slab and at damaged portins to drain off rain water

The factory made dry CEMENTATIOUS silica sand powder consisting of dry cement mortar (I cement: 4 silica sand) shall be mixed with additives like   ISOPROOF chemical and acrylic polymer and water to arrive at workable consistency. The same shall be applied over the prepared surface  to give even surface and act as base for geo-textile fabric..
       
 

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NON WOVEN GEO TEXTILE FABRIC APPLICATION

Two layers of Non - woven Geo fabric 40 gsm (40 = 40=80gsm)  shall be applied on FCM coating. Geo fabric shall be saturated with acrylic co polymer applied in wet condition. Over this layer, flexible monolithic membrane shall be laid by mixing single component ISO PROOF with water in the ratio of 1: 1.
 
 

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PRIMER COAT

A mixture of acrylic monomer,(1:1)  ISOPRROF& water mixed in proper  proportion will apllied on the geotextile membrane.
       
 

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FINAL COAT

Application of a coat of ISOPROOF  shall be applied at right angles to the primer coat and drying time is about 3 hours. The rate of completion of ISOPROOF for primer and final coat shall not be less than 1.25kg per Sq meter.
       
 

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 TOTAL TREATMENT SUMMERY

The entire treatment of water proofing shall be carried out by experienced and expert applicators as per manufacturers specifications and recommendation   conforming to   ASTM:D 412, ASTM :D 36., ASTMD 501, BS 1881 PT 201, ASTM D 22 40-86. sThe treatment should have good adhesion to concrete/plaster surfaces to withstand temperature ranging from 10 to 90 deg C

The agency should prove water tightness after completion of the work by conducting   WATER PONDING TEST on the treted surface as per standard procedure, Material Testing. ISO PROOF Material used in work shall conform to the following standards.

Specific Gravity     1.2
Flash point   Non flammable
Solid content     Not less than 60%  to 95% (From 100% extension after 5minutes)
TensileStrength   40 kg/Sq Cm. 
Elongation at break    450%
Recovery   95% (From 100% extension after 5 minutes)
     
CRYSTALLISATION LIQUID  Material used in work shall conform to the following standard
       
Specific Gravity   1.09
Freezing temp    - 4 ۫ c
Boiling point   105 ۫ c
Freeze harm    Complete
       

Note: The contractor shall furnish manufacture's certificate to the effect that the material conforms to above standards. Alternatively material can be got tested at approved laboratory at his cost.

For new construction waterproofing will be done for the mother slab with layer of 40gsm geotextile fabric .Later after screeding by the client the concrete surface will be waterproofrd with second layer of 40gsm geo textile fabric.