Water-Tanks & Water bodies - New

Water-Tanks & Water bodies - New - After Minimum 28 days of curing of the Slab

1. Surface Preparation - Concrete

Clear and thoroughly clean the surface with wire brush, electromechanical grinders and jute brush.
Ensure surface is totally dust-free by using a high speed air blower
Wash the surface with water to identify cracks
Mark the cracks with chalk to identify them properly

2. Cold Joint Treatment - Concrete Structure

Grind the cold joints to clear out the profile and remove any loose surface
Make a groove using grinder to make space for repair mortar and make it dust free
Apply bond coat of BS smartbond 100, diluted 1:2 in water and apply by brush
Make repair mortar with sand cement ratio of 1:4 admixed with BS Smartbond 100 at 5% by weight of cement

3. Grouting of Concrete Structure

Drill grouting hole in the structure after hammer testing and marking the areas to identify honey combed areas
Install the packers using polymer mortar and let them set for a day.
After 24 hours , use Grouting pump to grout the concrete with cement slurry admixed with expansive flow agent like MC-Einpresshilfe or similar
Saturate all the points and remove the packers after work is done and repair with polymer mortar prepared with cement, sand , water and BSsmartbond 100.

4. Application of Cove or Gola along the vertical wall and terrace floor.

On the concrete surface or the plastered surface make a horizontal and vertical cove or gola of 50mm.
Apply a bond coat of BS Smartbond 100 diluted with water 1:2 by brush just before making gola or cove of 50mm
Make a mix of cement : sand in ratio of 1: 4, add 5% BS Smartbond 100 by weight of cement in the mix and make a cove or gola along the wall on a still wet bond coat of BS Smartbond 100 applied before
Cure it for 3 days, by using jute cloth or water spray curing 3 times a day.

5. Application of Waterproofing Coating

a) Always Ensure before starting, the surface is dust free, use a high speed blower if possible or jute brush to remove any dust.
b) Type Cementitious 1 Part or 2 Parts

Priming: Apply a coat of 2k waterborne epoxy primer BS SmartPrime WB EP, Resin 1 Part, Hardener 2 Parts and Water 3 Parts, and apply by brush on the entire repaired and prepared surface.
After a gap of 7 to 8 hours,

Applying the first coat of Acrylic Cementitious System like MoistureZero Liquid chemical mixed with cement in 1:1.5 ratio
After 4 hours, apply the second layer of MoistureZero mixed with cement in a ratio of 1:1.5 to finish the layer.

3. Cure for 3 days by jute sacks after 6 hours of final coat. After curing test waterproofing for 4 day by water ponding.