Preparation and waterproofing cycle for a concrete tank used to contain drinking water or liquid foods.

Concrete tank preparation cycle:

1.   Completely remove all traces of flaking concrete and dirt by high-pressure water washing;

2.   Scarify the concrete around any piping, to a depth of about 10-15 cm;

3.   Insert inside the groove the EXPAN BENTONITICO thickness, fixing it around the piping using a clamp or metal wire;

4.   Slightly sand the surface of the piping;

5.   Using a brush, apply on the sanded and clean surface a coat of epoxy adhesion promoter and passivating primer STRATO AB;

6.   Apply, fresh on fresh on the STRATO AB, the restoring quick-setting fibre mortar for concrete RESISTO TIXO mixed with COLLASEAL latex diluted 1:3 with water;

 

Concrete tank waterproofing cycle:

7.   Completely remove all traces of dirt by high-pressure water washing;

8.   Open and fill the concrete joints, gravel nests and the chipped parts with compensated shrinkage high-strength cement-based mortar with extra-adhesion, selected aggregates with a maximum grain size of 0.6 mm and additives that guarantee excellent workability, thixotropy for applications up to 2 cm without the use of formwork and using RESISTO UNIFIX.

9.   Make rounded edges between wall and floor (if not already existing), of 55 cm, recessed about 2 cm using a fibre-reinforced high-strength concrete-based mortar with compensated shrinkage, selected aggregates, synthetic fibres and additives which guarantee excellent workability, adhesion, thixotropy for applications with thicknesses of 4-5 cm without the use of formwork and using RESISTO TIXO or GEORAPID.

10.Apply a coat of anchoring agent and primer acting as vapour barrier EPOSTOP ABC in order to make a waterproofing coating on concrete surfaces, grouts and smoothing works. EPOSTOP ABC also adheres to highly-smooth concrete surfaces, or to damp surfaces; minimum consumption 700g/m2

11.Apply a non-toxic water-based two-component epoxy coating EPOSTOP AB; apply 2 coats of product with a consumption of 300/350 g/m2 per coat


Description of the layers and related product data sheets:

EXPAN BENTONITICO

STRATO AB

EPOSTOP AB

EPOSTOP ABC

RESISTO UNIFIX

RESISTO TIXO

GEORAPID


For proposals or different solutions please contact our technical department of Index S.p.A.
 
For many other stratigraphy and / or insights, you can consult the following documentation: