1. Waterproof concrete with admixture CC 189 or CC 198
The concrete must be sealed definitely in its mass with admixed mass sealant Ceresit CC 189 the CC 198. The cement content of the concrete must not be less than 350 kg/m3 for concrete with a maximum square grain of 31.5mm and 400kg/m3 for concrete with a maximum grain size of 16mm square cross-section. The granulometric curve of the aggregate mixture must be in sub-zone D and as close as possible to the middle line of this sub-zone. The N/T ratio must not exceed 0.58 for a cement content of 350 kg/m3 and 0.5 for a content of 400 kg/m3.
Compaction must be done with great care and wetting must begin immediately after laying and last at least 14 days.
After the last concreting, all the concrete is wetted four times a day for four days, three times a day for a week and once a day for a week. Trypoxyl, styrofoam or other materials are prohibited on the walls and bottom of the pool and overflow tank.
If the walls of the pool are not concreted together with the bottom (suit), then the minimum possible time must elapse between the concretings, while the part that has already been concreted must be continuously wetted.
Concrete break joints: In contrast to the basement, every concrete break joint in tanks is constantly under maximum hydrostatic stress. When these joints are foreseen in the construction, it is mandatory to place an elastic joint membrane on the formwork in advance. The placement is shown on the side. If such joints occur, without placing a membrane, then we open them with a trowel preferably from the water side and seal them with the material CX 1
2. Fast-setting sealing cement CX 5
Application: i) We open the hole in the form of a truncated cone. Wet the surface.
ii) Form the sealing mass on the trowel with water and press it for 2-3 minutes.
3. Sealing with spreadable cementitious CR 65
Here is the sealing: with the spreadable cementitious material Ceresit CR 65. Wet the surface until saturation – Brush the mixture of the material consisting of a bag (25 kg) CR 65 + 5.5 lit water + 1 lit CC 81. We always add the powder to the liquids, not the other way around. If it is a potable water tank, the mixture consists of a bag (25 kg) CR 65 + 6.5 liters of water. The second hand is spread with a spatula, with the same proportions after 2-3 hours after slightly wetting the surface. If a third coat is required, it should be done again with a brush. On its surface CR 65 followed by throwing to achieve adhesion of the leveling cement mortar. To do this, however, it must be completely dry CR 65 (1 week).
- Thrown: The dry ingredients consist of 1 volume of cement to 2-3 volumes of sand (preferably concrete sand). The mixing water is enriched with 6 lit CC 81 per tin of water. We mix the dry ingredients with the enriched water in the desired proportion (by eye) so that it acquires a throwable texture. The throw should completely cover the surface (sertiko). This litter must be wild and completely dried. Depending on the temperature, it may take 3-4 days.
- Adhesion Sludge: it is done on the bottom instead of thrown. The proportion is exactly the same as that of the thrown but when we mix the dry ingredients with the enriched water we create a watery texture (ariani) so that it can be applied with a brush or broom. We brush a surface, which we have previously wet, and spread the cement mortar there before the mud dries (fresh to fresh). The mud is kept in a bucket for some time in which we dip the broom or brush to apply the material.
- Cement mortar: Consists of 1/2 bag of cement (50kg)+20 shovels of sand+1/2lit CC 93+1.5 liters CC 81+water as required. The sand should preferably be river or sea sand. Of course, quartz would be ideal. The cement mortar is spread gradually, i.e. in layers of up to 2 cm so that it does not slip. This cement mortar remains for 4 weeks before any other work (tiles or paint) follows. Ready mortar is also available for the bottom CN 86.
6. Tile glue & Epoxy pool putty
The tiles are glued with special highly adhesive and elastic adhesives such as super elastic CM 17 the CM 18 for tiles, h CM 25 for gluing ceramic tiles or glass tiles, or epoxy CM 74 with the advantage of being glue and putty together, necessary for gluing glass mosaic with a very small joint ~2mm where the glue overflows and becomes a putty itself.
7. The grouting, due to the chemicals added to the water, the strong tile cleaners and also the requirement of water hygiene, must be done with a completely specialized epoxy waterproof material. In cases of strong chemical stress and to achieve a smooth surface in thick or thin joints the specialized CM 74 (grey) & CE (white). As an adhesive and putty, it is also ideal for adding thickness in cases of joint repair.
Alternatively epoxy CF 34 pool paint
Epoxy paint Cerefloor CF 34 replaces the pool tiles giving a surface as hard as them, resistant to chemical stress and photostable. For many, the aesthetics of a painted pool is superior to a tiled one. As Ceresit's pool tile adhesives and grouts meet the requirement KTW, which now wants swimming pools to correspond to drinking water tanks, so does the Cerefloor CF 34 meets this new requirement.
The Cerefloor CF 34 it is also certified for harmless substances (mark Blue Angel) is water-based, odorless, and requires no primer other than itself diluted with 20% water. 2 empty hands follow. Hand to hand 8 hours at the earliest 24 hours at the latest.
More information: http://www.renovat.gr