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:

• 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.