Cabrils, Barcelona: Water tank lining
In 2021, the water tank lining at Cabrils, Barcelona was made with Polyurea Rayston.
01 · Project overview
What is this project?
In 2021, the water tank lining at Cabrils, Barcelona was made with Polyurea Rayston. Catalonia works a roof and a floor hard: sea air on the coast, a sharp swing between afternoon and night, and industrial towns that do not stop for a slow coating.
This one is water tank lining.
Polyurea Rayston is hot-sprayed. It gels in about four seconds and the usual build is 1.5 to 2 mm.
Krypton Chemical makes the resin. The crew on site applies it. On Cabrils, Barcelona the details have to get the same film as the open field, and the cure has to finish before the building goes back to work.
| Project | Cabrils, Barcelona: Water tank lining |
|---|---|
| Place | España – Cataluña |
| Year | 2021 |
| Line | Waterproofing |
| Products | Polyurea Rayston |
02 · The challenge
What did this structure ask of the system?
A tank holds water against its own wall for years. The leak starts at a pipe, a corner or a cold joint, and it shows up outside long after the tank was closed.
Cabrils, Barcelona: Water tank lining has to be one lining, floor and walls together, with the pipe entries in the same film. Filling waits until the cure is finished.
03 · The solution
Which system was trusted here?
The system trusted here is the one named for the job: Polyurea Rayston. It is chosen because it matches the substrate and the exposure, not because every building wants the same can.
The build-up is there to survive the exposure this structure actually has, including the lines where workmanship usually goes thin.
04 · Application
How is the system built?
Where the system is Polyurea Rayston, the concrete or the prepared deck is not sprayed over dirt. Pull-off should be at least 1.4 N/mm2. Cracks are cut out and filled. Moisture in the concrete stays under 4 percent, with the concrete between 10 and 40 degrees C. If the slab is damp behind, two coats of epoxy primer go on, the second blinded with quartz. That bond is what stops a blister when the deck heats up.
The spray is hot. Resin about 65 degrees C, isocyanate about 75 degrees C, hose about 65 degrees C, and at least 140 bar at the gun. The usual build is 1.5 to 2.0 kg per square metre, about 1.5 to 2 mm. Gel time is about 4 seconds at 25 degrees C. Typical elongation is 324 percent and tensile strength is 16.2 MPa. Those are the product’s figures, not a thickness measured on Cabrils, Barcelona: Water tank lining. An aromatic film shifts colour in the sun, so an exposed face takes an aliphatic topcoat. A buried lining does not need that coat to keep its strength.
On Cabrils, Barcelona: Water tank lining the lining sees water every day it is in service. Pipe entries, corners and the floor-to-wall joint are the whole of the risk. A pinhole there travels. The film is taken around the pipe as part of the same coat, not as a mastic collar the following day.
Concrete moisture and temperature decide whether the lining bonds. A damp wall in a closed room will blister a membrane that was perfectly happy on a roof in the sun. Ventilation, a moisture reading, and a primer where the data sheet calls for one are the job, before anyone is impressed by the spray.
The tank is washed before it goes into service when the water is for people or for irrigation that feeds a crop. Cure is finished first. Filling a half-cured lining to save a day is how the water tastes of resin and the owner loses faith in a system that would have been fine.
05 · Results
What does a job like this stand behind?
Cabrils, Barcelona: Water tank lining has one standard. The coating is still doing its job after the building is back in use, at the details as well as in the middle.
Figures for cure, thickness and strength, where they are given, come from the product data sheets. They are not a test cut out of this building.
What this asks of Cabrils, Barcelona: Water tank lining is workmanship at the difficult line. The open field is the easy part of a resin job. Outlets, edges, penetrations and changes of plane are where thickness goes missing, and where water or wear finds the gap. The same products and the same care belong there, and the cure is allowed to finish before the building goes back into use. That is the difference between a coating that was simply applied and a system that stays in service.
06 · Products
Products on this job
Polyurea Rayston
Named on this project. The data sheet carries the application window and the typical figures.
07 · FAQ
Frequently asked questions
Where is this project?
Cabrils, Barcelona: Water tank lining. España – Cataluña
When was the work done?
2021.
Which products were used?
Polyurea Rayston.
Why are the details done first?
Outlets, upstands and joints are where water gets in. They are closed with the same system as the main area.
Where do the cure times come from?
From the product data sheet. They describe the resin, not a clock stopped on this site.