Permanent pool waterproofing (new construction) – Penetron

Permanent sealing swimming pool (new construction) with the endochemical action system and crystal growth company Penetron

1. Construction of a swimming pool with permanent sealing and protection of the concrete, with the addition of PENETRON ADMIX®, an endochemical concrete admixture with crystal growth, inside it.

PENETRON ADMIX® is an endochemical concrete admixture, for permanent waterproofing and protection, with crystal growth, in powder form and added at a ratio of 0.8 – 1% by weight of cement. The product can be added as it is, in powder, during the production process in the concrete plant, by adding directly to the aggregates (dry before adding water, usually on the conveyor belt – pre-weighed) or even directly to the mixing mixer (for this addition, PENETRON ADMIX® SOLUBLE BAGS are preferable). Also in the "barrel" of concrete transport, but with previous dissolution in water. The dissolution of PENETRON ADMIX® with water is done with the help of a mechanical stirrer. This solution is added to the content of the transfer "barrel", which should at this stage have a high rotation speed for mixing, up to 5 minutes after adding the last amount of PENETRON ADMIX®. The dissolution of PENETRON ADMIX® with water is done with the help of a mechanical stirrer. For greater convenience, the dissolution ratio is 9 kg of PENETRON ADMIX® (1/2 bag of 18 kg), in 11.5 kg of water and can be done in the specially designed plastic mixing containers of the PENETRON® company (MIXING CONTAINERS 23 Lt ), stirring for about 1 minute.

Example
As an example, for concrete with a content of 300 kg-cement/m3, approximately 3 kg/m3 of PENETRON ADMIX® are required (mixing ratio equal to 1% by weight of cement). If, hypothetically, a 9 m3 "barrel" is used, then we need 3 kg x 9 m3 = 27 kg PENETRON ADMIX® and therefore three "half bags" of 9 kg, so for convenience three mixing containers MIXING CONTAINERS 23 Lt.

It is recommended that the concrete mixes to be used have the appropriate workability (sit) so that they are easier to form with less vibration and so that unworkable spots are avoided. Therefore, in order to achieve the required workability, it is recommended to use certified superfluidizers with addition in the concrete production plant or directly in the barrel at the construction site. Then, the concreting stage is carried out, using the concrete mix with PENETRON ADMIX®.

2. Sealing of concrete break joints with the PENEBAR SW water-inflatable cord systems.

To seal the concrete stop joints, we use the PENEBAR SW 45 RAPID hydro-inflatable cords (rapid expansion) or in the case of a wet environment (as in swimming pool construction) or in anticipation of rain the type PENEBAR SW 55 (slow expansion). For the welding of the cords, we use the primer PENEBAR PRIMER, which acts as a stabilizer, but also as a barrier to the humidity of the substrate. PENEBAR SW is installed, after the primer has "pulled", usually half an hour to an hour after its application. In rare cases, with a very wet substrate, it is better to use the slow type of cord, using instead of the primer a metal perforated fastening hoop, 10 mm wide (in 10 meter rolls), placed lengthwise on the surface of the cord and fixing it every 25 – 30 cm with concrete nails.

For concrete up to 20 cm thick, PENEBAR SW type B is used (4 m rolls with a cross section of 25 x 9 mm), while for more than 20 cm thick type A is used (5 m rolls with a cross section of 25 x 19 mm) . For concrete thicknesses of more than 40 – 50 cm, a second parallel cord should be used at a distance of approximately 30 cm. PENEBAR SW should always have a 4 – 5 cm overlap of reinforced concrete. At the joint of the rolls, cut on both sides with a cutter at an angle of 45° and join, bringing the two edges into contact with pressure. We avoid placing one cord on top of the other in the joint.

3. Repair of concrete nests from non-woven parts, as well as sealing of "morels" and "hairpins" with the penetrating penetrant PENETRON® and the repair agent of the corresponding technology PENECRETE MORTAR and repair of cracks with running water with the fast-setting mortar with crystal growth PENEPLUG®.

By mechanical means we widen the holes and nests that have resulted from concreting. Also, by mechanical means we widen the area around the "hairpins" to a width of at least 35 mm and a depth of 20-30 mm. Then we cut the "hairpin" with a wheel about 20 mm in. The "morels" are required to be completely removed or at least cut, creating a 30 x 30 x 40 mm reverse wedge recess. We rinse the holes with plenty of water, on the one hand to remove the generated solids, on the other hand to saturate the area with water, which is a necessary condition for the operation of the penetrating, penetrating, sealing material with chemical action and crystal growth PENETRON ® and the same technology repair PENECRETE MORTAR. On a surface that is wet and without pools of water, apply an aqueous mixture of PENETRON® sealing material, in a mixing ratio of 5 parts PENETRON® powder to 3.5 parts water (by volume), only in the area of the holes and nests and 1 cm around them . While the PENETRON® sealant is still fresh, mix PENECRETE MORTAR powder with enough water to achieve the desired plasticine texture [usual mixing ratio is 4.5 parts PENECRETE MORTAR with 1 part water (by volume)] and fill the holes and nests of the poor concrete. As soon as the repair mortar PENECRETE MORTAR has set, but is still wet, a second, only local, application with an aqueous mixture of PENETRON® follows.

Next, we treat water inflow from cracks with PENEPLUG® active crystal growth quick-setting mortar, (mixed with minimal water, loam form). For the application of PENEPLUG®, we should widen the cracks with a digging tool to a width of 2-3 cm and with a conical base on the inside, for better anchoring of the fast gel during its application. Permanent pool waterproofing (new construction) – Penetron

We deal with the stop joints in the same way, cutting on both sides with a cutting wheel and then creating a conical "gutter", about 3 cm wide, using a digging tool. Then, we apply the PENEPLUG® fast-setting mortar.

In the case of retrofitting components or pipes that require perimeter sealing/sealing, the corresponding perimeter installation of PENEBAR SW water-inflatable cords is recommended (recommended type of controlled expansion PENEBAR SW 55 TYPE B or often half of type 55 B). The material is placed at a depth of at least 5 cm and covered with fast-setting hydraulic mortar with PENEPLUG® crystal growth.

note: The perimeter cavity for placing the hydro-expandable cord that will then be filled with PENEPLUG® should be in the form of an inverted wedge, for better anchoring of the mortar.

4. Applying a layer of adhesion and "mud" / cement mortar, to cover the concrete elements and to smooth the walls and bottom of the pool.

First, an adhesion layer is applied to the concrete elements for the application of the main cement mortar. The adhesion layer includes either the application of the acrylic resin PENETRON® ACRYLIC BONDCRETE, undiluted with an indicative consumption of 4.9 Lt/m2, or the application of adhesion material, "cast", which consists of 1 part cement with 2-3 parts sand ( by volume), mixed in an aqueous solution of 1 part PENETRON® LATEX acrylic resin with two parts water (by volume).

Next, the "guides" are made for the application of the filler or mortar. The "drivers" and "fill" consist of 1 part cement and 3 parts sand mixed in a solution of 1 part PENETRON® LATEX building resin with two to three parts water (by volume), to which polypropylene fibers are also added to prevent cracking . The cement content of the leveling mortar and "guides" is 400-500 kg/m3. Also, PENETRON ADMIX® is added in a proportion of 0.8 – 1% by weight of cement.
NOTE: In all previous applications lime is never used.

5. Finishing layer of cement mortar (fine or ground).

After the smoothing layer with cement mortar ("slurry"), there is usually a thin layer of mortar with fine aggregates and a very good finish. Especially in cases where pool paint follows (PENECOAT POOL).

This thin finish layer can be produced with conventional materials such as fine sand and quartz aggregates and high cement content (>400 kg/m3). It is also possible to apply, alternatively, a finished product with fine quartz aggregates, PENETRON® TOP FINISH FINE, with an indicative consumption of 1.6 kg/m2 per mm of thickness, usually in a gray or white shade. It is recommended to use an adhesion primer (PENETRON® ACRYLIC BONDCRETE).

6. Sealing of cement mortar surface with the conventional sealing system SEALCOAT FLEX or SEALCOAT ELASTIC.

In most cases of tile application as a final surface, it is recommended to previously seal the surface of the cement mortar with the elastic or flexible, correspondingly, two-component adhesive sealing mortar SEALCOAT FLEX (flexible system by mixing 22.68 kg of PENETRON® SEALCOAT in solution with 4 kg of PENECRYL ELASTIC and 3 kg of water) or the SEALCOAT ELASTIC (elastic system by mixing 22.68 kg of PENETRON® SEALCOAT with 12 kg of PENECRYL ELASTIC), depending on the requirements of the project, i.e. small and large requirements for bridging capillary cracks. Apply an aqueous coat of the required SEALCOAT™ FLEX or SEALCOAT™ ELASTIC evenly with a short-bristled brush. The next day, apply a second coat perpendicular to the first. Permanent pool waterproofing (new construction) – Penetron

The required consumption of the mixture SEALCOAT™ FLEX ~ 2kg/m2, for a total of 2 layers and SEALCOAT™ ELASTIC is ~ 2.5kg/m2, for a total of 2 layers. It is also possible to reinforce SEALCOAT™ SYSTEMS with glass mesh (5x5 mm frame). In this case, place the glass mesh on the fresh first layer and completely cover the mesh with the second layer, the next day. If required, apply a third coat of SEALCOAT™ FLEX or SEALCOAT™ ELASTIC. The addition of glass mesh may increase the consumption of the mixture to about 3 kg/m2 in total in all 3 layers.

For gluing tiles over SEALCOAT SYSTEMS, a special FLEX adhesive for swimming pools is used.

7. Coating – Final surface using PENECOAT POOL pool paint.

In addition to the usual coating materials for swimming pools, such as tile, mosaic, granite, etc., it is also common to apply PENECOAT POOL polyurethane pool paint, in two or three layers, with an indicative consumption of 0.2kg/m2 per layer. In this case, we do not apply SEALCOAT SYSTEMS, but paint directly on the final finish surface.

Following is a schematic illustration of discontinuity repairs with PENETRON® chemical action and crystal growth materials from PENETRON INTERNATIONAL LTD.

To clarify that the above is not a construction study, but a technical proposal according to the information we have for the corresponding project and based on our best experience and knowledge so far. For more information regarding the safe use, processing and storage of the products contact PENETRON HELLAS, at Product Characteristics Sheet and to Product Safe Use Leaflet for every product you use. Permanent pool waterproofing (new construction) – Penetron

PENETRON HELLAS
THRAKOMACEDONON 52A
136 71 ACHARNES
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www.penetron.gr – info@penetron.gr