Waterproofing Swimming pools, tanks and basements. Systems to waterproof containment tanks, swimming pools and basements.

To waterproof containment tanks and basements:


Preparation of the concrete and puttying

1.	Mechanical removal of all the concrete defects (gravel nests, incoherent parts, ect) until the healthy concrete is reached
2.	Realization of a channel with dimensions of at least 25x25 mm in correspondence of the construction joints
3.	Demolition for 4 cm of the concrete surrounding the spacers
4.	Cut and removal of the spacers for a depth of 4 cm into the wall
5.	Opening of the capillary system of the concrete by high pressure washing out (220 - 250 atm) or by sandblasting or mechanical action on all the surfaces of interest. This operation also removes incoherent parts or parts in the phase of falling off

Waterproofing of the surfaces

1.	Dampen and wet all the surfaces to waterproof and eliminate excessive water
2.	Apply on the demolished parts of the previous paragraph a hand of X-tra, an osmotic capillary penetration cement, and subsequently close them with CR 45 RS, an anti-shrinkage waterproof mortar resistant to sulphates
3.	Dampen and wet all the surfaces to waterproof and eliminate excessive water
4.	Supply and cast the osmotic capillary penetration cement X-tra applied by brush or sprayer in two hand for a total comsumption of about 1.5 kg/m2
5.	Once the osmotic capillary penetration cement X-tra has set, the treated surfaces must be maintained humid for 3 days

Construction joint

1.	Mechanically place the hydro-expansive bentonite joint AK 25 in the middle of the vertical wall thickness and fix it with nails or glue to the concrete striucture
2.	After applying AK 25 keep all the zone of interest clean

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