Introduction to
Waterproofing
What is waterproofing?
The treatment of a surface or structure to prevent passage of water
under hydrostatic pressure.
Water retaining structures: keeping water in
- Reservoirs and water tanks
- Waste water treatment plants
- Dams
- Secondary containment bund
- Swimming pools
- Sewers and pipelines, etc
Waterproof facilities: keeping water out
Basements
Parking garages
Underground stations and subways
Utility vaults
Reservoirs and water tanks
Marine structures
Tunnels, etc.
Causes for leakage
- Concrete shrinks and develops micro cracks
- Joints detailing & treatments
- Poor quality of concrete
- Poor workmanship
- High water table
- Water retaining structures
- Structural problems
Why is it required?
Leakage results in
Corrosion and spalling
Life of the structure is reduced
Cannot be utilized as intended
Loss of revenue
Remedial measures are trial & error and very expensive
Selection criteria for basement water proofing.
Usage / utility of the basement areas
Water table level.
Presence of aggressive / corrosive chemicals in ground water.
Area of water proofing application.
Roof slab
Podiums
Balconies
Chejjas
Wet areas
Water retaining & water
treatment structures
Waterproofing Range
Ø Liquid applied
Ø Pre & post applied Membrane
Ø Spray applied
Ø Crystalline
Ø Admixture
Ø Water stops
Ø Thermal insulation cum waterproofing
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