Applications in water-filled drill holes17. December 2019
Fixings under water or in water-filled drill holes are part of everyday life on the construction site. Rain might fill the building pit with water or specialist work might need to be carried out on a dam. These types of applications can become a challenge, and not all products are suitable. What needs to be considered when installing applications involving water? We show you below.
Can I use my product for underwater applications or not? This question is defined in the European Technical Assessment( ETA). Your product’s ETA can usually be found on the manufacturer’s website, app or on the product packaging. The epoxy resin mortar FIS EM Plus is just one product that can be used in water-filled boreholes. The injection mortar is mixed and dispensed via the dispensing gun with the help of the static mixer.
One of the special features of the FIS EM Plus is that the ETA approval guarantees a working life of 100 years. The IEA reports meanwhile confirms a working life of up to 120 years.
There are several points to take into consideration when using chemical products under water. To begin with, all chemical products can only reach their maximum performance once they have fully cured. The correct mortar quantity should also be used. If you’re unsure how much mortar to use for your application then use the free Mortar FIX app. Simply enter your application parameters and the mortar quantity will automatically be calculated. Alternatively, this information can be found in the manufacturer instructions or catalogue.
Now you can inject the mortar into the drill hole. Next, insert the threaded rod in a clockwise motion. The mortar then needs to cure. The exact processing and curing times can be found on the label of the mortar. Careful: curing times should be doubled when using mortar in fresh concrete or water-filled drill holes.
Did you know? All chemical anchor systems have a best-before date, which can be found on the reverse side of the label. As the manufacturer, fischer can guarantee loads within the best-before timeframe. Once the cartridge is used after the best-before date, the user is liable. Why is this the case? The chemical products consist of a resin and a curing agent, among other things. These two components have a storage stability period and are therefore perishable.
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