Durban Heights No 3 Reservoir
REMEDIAL REPAIRS – WATERPROOFING
Reservoir Hills, Durban
SIZE OF PROJECT
340 mega ℓ reservoir
Removal of the original torched membrane system. This was replaced with a single-layer dual reinforced abedex® Unigum 4 mm waterproofing membrane applied by heat fusion, with sealed 100 mm side laps and 150 mm end laps onto bituprime. The primed surface was fully bonded by “torch-on” fusion to falls and cross falls, with 50 mm x 50 mm mortar fillets on all corners, finished with silvakote bitumen-aluminium paint.
All butt joints were mirrored over the existing joints. Counter flashing: 100 mm super laykold® with abe® membrane system was applied between the wall and the torch-on membrane and finished with two coats silvakote®.
Malthoid 3 ply was loosely installed over joints.
This was followed by the installation of abedex® HM (500 mm wide, fully bonded 150 mm on either side of the Malthoid only).
Waterproofing and repair of the large concrete ring beam using abeproof PU ECO. This also involved repairs to the beam scupper outlets where necessary. abeproof PU ECO, as stated above, is a flexible single-pack water-based polyurethane seamless liquid waterproofing membrane that is fast drying and has excellent chemical resistance properties.
OTHER PRODUCTS USED
PROJECT START & END DATES