Brick Bat Coba – Waterproofing Method
Today, we will delve into the brick bat Coba, a crucial waterproofing method
used to effectively prevent water leakage and significantly extend the lifespan
of building structures.
Brickbat Coba stands as the time-tested
waterproofing method, serving to staunchly resist water seepage or leakage in structures, thereby substantially reducing maintenance costs and
enhancing longevity.
The process of brick bat Coba entails the following unequivocal steps:
1. Cleaning the surface
- For existing or old slabs, utilize a hard wire brush
to decisively remove the top coat and cleanse it
with water. Rectify any cracks found on the slab.
- For newly constructed slabs, ensure the surface is rigorously roughened by
scraping to facilitate robust bonding with the cement slurry.
2. Applying cement slurry and base coat
- Apply cement slurry with the stipulated consistency to the slab surface,
cracks, and holes. The slurry used is 2.75 kg of cement per square meter, with
a thickness of 25 mm and a mix ratio of 1:4.
3. Placing of Brickbat
- Place thoroughly soaked brickbats at a precise distance of 15-20 mm from
each other on the cement slurry.
4. Laying of a Protective Coat of cement mortar
- Prepare cement mortar of an unwavering 1:4 ratio with a waterproofing
compound. Ensure the waterproofing compound does not exceed 3% of the total
weight of grey cement used. Finish the surface with a resolute wooden/steel
hand float.
5. Curing
- Cure the brick bat waterproofing for an unwavering minimum of 7 to 10 days
using pond curing, gunny bag curing method, etc.
Advantages of Brickbat Coba:
- Economical waterproofing method
- Quick completion
- Utmost utilization of masonry brick wastage for waterproofing
Disadvantages of Brickbat Coba:
- Adds an unavoidable dead load to the structure
- Challenging to repair if cracks form
- Mandates skilled workmanship for the indisputable installation
Certainly!
