FAQs

The shelf lives of the composite mortars are printed in the catalogue and depend on the type of mortar. They are between 12 and 24 months.

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The best-before date is printed on each cartridge, calculated from the date of manufacture.

ResiFIX VY 300SF, for example, has a minimum shelf life of 18 months from the expiry date printed on the cartridge.

Even an opened and resealed cartridge of this mortar can be used for 18 months until the expiry date on the cartridge.

In most cases, the cartridge can also be used for a few months longer, but this is not 100% guaranteed. The decisive factor then is whether the two components that are in the cartridge can be mixed when they are squirted out and the material hardens well. You can try this out on a squeezed out test strand.

ResiFIX VYSF may be used for anchoring reinforcing bars / rebars and also has an approval for this application, as confirmed by the ETA (European Technical Assessment) Option 1 for cracked concrete.

The composite mortar ResiFIX VY SF also has an approval for subsequent reinforcement connection. But at present, it is not allowed to carry out a subsequent reinforcement connection with our ResiFIX VY SF injection mortar.

This sounds misleading, but the approval alone is not sufficient for the subsequent connection of reinforcement. The approval also requires that the craftsman must be trained to make a reinforcement connection precisely with our composite mortar. This training must - according to the legal situation - be carried out by us at CELO. At the moment, however, we do not offer such trainings.

If the craftsman nevertheless has the confidence to install the subsequent reinforcement connection (e.g. if he has done the training with another chemical mortar), he can of course do so, but he will then be outside the approval because of the lack of training for our product ResiFIX VY SF.

When opening a new cartridge you should always discard the first 10cm due to the two components not being perfectly mixed. You should start using the product when the colour is homogenous and dark grey.

After the first use, the mixing nozzle should be left on the cartridge, or it can be removed, and the cap put back on the cartridge. Before using again, please squeeze out and discard the first 10 cm as mentioned in the step above. As soon as the colour is homogeneous and dark grey, you can start using the product again. The cartridge can still be used until the expiry date (like an unused cartridge).

The borehole must be cleaned with a blow-out pump and cleaning brush according to the steps described in the ETA approval before filling with injection mortar. Our installation video shows more about this.

If the borehole is not dry, a distinction must be made between two cases: the cleaning of moist boreholes and the cleaning of water-filled boreholes (this is referred to as underwater application).

1. Cleaning of wet boreholes:

Before cleaning, standing water in the borehole must be removed. In accordance with the approval, there is only cleaning in moist boreholes, never in water-filled boreholes.

After cleaning, clean water may run into the borehole. The bond values for water-filled boreholes then apply.

2. Underwater application:

Here it is assumed that drilling already takes place in the water and for cleaning the blow-out is replaced by water flushing. However, this case is not covered by the approvals.

The good news is that salt water is neither critical for the curing process nor for the life of our products. However, if water-filled boreholes are excluded in the approval, the product is also not suitable for underwater applications.

For applications (up to 2 metres under water) we recommend the following steps for underwater applications:

- Rinse with water until clear water comes - brush 2x - rinse again until clear water comes.

- Discard the pre-run of the injection mortar above the waterline, not under water, ideally do not submerge the cartridge at all and work with longer extensions

- Fill the borehole completely from the bottom

- To fill the borehole for all applications, it is imperative to use a backfill nozzle (bung) so that the water can be forced out completely.

If the cartridge is pressed out under water, then only 70% of the composite stress from the approval for water-filled boreholes should be applied, if the pressing out takes place above the waterline, 100% of the composite stress from the approval for water-filled boreholes can be applied.

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The question of the compatibility of chemical mortar with drinking water arises, particularly during the installation of drinking water channels or when working on the pure water channel of a waterworks.

CELO's injection systems, ResiFIX VYSF, and ResiFIX Pure Epoxy Plus EPP SF, are deemed suitable for contact with drinking water upon completion of the curing process. When utilized appropriately, ResiFIX VY SF can be employed in areas where food is handled. It adheres to the requirements for suitability in drinking water applications as per the NSF/ANSI Standard 61 certificate (ICC-ES Report from 2019).