Ravindra Babu UB Marketing Manager, Fosroc Chemical India Pvt. Ltd.
Basement waterproofing-Risk involvedWater either under hydrostatic pressure or by capillary action finds its way in to the below ground RCC structure causing leakage or dampness. This means the source of any leak could be a long way from where it shows inside the structure, making leak detection and repair almost impossible. Any differential ground settlement will make this problem worse. The membrane will settle with the ground, leaving it unsupported against groundwater pressure eventually failure of waterproofing system.
Basement waterproofing- Requirements
- Water tightness to avoid ingress of water from below ground under hydrostatic pressure
- High mechanical properties like puncture resistance to withstand abuses on membrane during construction activity
- Good elongation and Flexibility to accommodate movements
- Excellent bond to wet concrete surface
- Protection layer over water- proofing membrane should not be mandatory
- Even if membrane punctures water should not percolate through surface of membrane
- Positive side waterproofing to the raft and retaining wall even in the absence of working space
- Enable installation of water- proofing system effective under wet conditions of basement.