70
CONSTRUCTION FIXINGS
Choosing the correct
chemical resin
With the variety of chemical resins on the market today, choosing the correct one can be a daunting task.
Below, Rawlplug offers its advice on how to choose the correct chemical resin for the right application.
Firstly, the chemical resin must be suitable for the task in hand,
So if you do go cartridge free, which CFS would
it needs to work in whatever weather conditions users face and give
you use?
the peace of mind that the resin is going to do the job required,
If you’re after high performance then RV200 will be your best
fi xing into the substrates used in construction today. It might need
choice, this resin also works in temperatures of as low as -5°C.
to be able to cure in the wet and the cold and then there is the
However, if versatility is what you’re after, without breaking the
pressure to buy it in the most cost effective way possible whilst
bank, RM50 will do the job you require and leave you with peace
being easy to use. But that’s not the end of it, once you’ve fi nished
of mind. So, you’ve chosen the system type, now the load bearing
the job you then have the worry of disposal and the environmental
ability is a key factor in which resin you should select.
and fi nancial impact that brings. So where do you start?
So which resin is going to perform to the level
Do you go cartridge, cartridge free or capsule?
you require?
An advantage of capsules is that they have no disposal problems
If you require high performance on concrete you should select:
at all, as the capsule itself is used to help create the bond. Another
R-KER; R-KEX; or RV200. For the highest performance into brick and
advantage of capsules is that the setting action of the product
blockwork you should select: RM50 or R-KEM+.
increases the key in effect, as such strengthening the fi xing.
For a versatile resin with high performance in a variety of
However, the capsules are far more limited in their applications,
substrates select from:
being suitable only in concrete, though with R-CAS users can work
with it in the wet.
• R-KF2 - Suitable for brickwork, blockwork and concrete, giving
Then there are the injection resins which come as either cartridge
a higher performance in brick and block and mid-range
or cartridge free systems. The main advantage of the cartridge
performance into concrete.
system is that it is the traditional delivery system for injection resins,
having been established in the market place for over 20 years. Every
• R-KEM+ - Suitable on the majority of substrates, high
work site will have an injection tool that will fi t the cartridges.
performance and even workable in overhead use,
Rawlplug also has its resin systems available in a cartridge free,
and best of all it’s cost effective.
foil pack. The range of resins available suit the common construction
materials and all the usual variables faced in the construction
• RM50 - having the same chemical make up as R-KEM+,
process. The carbon footprint of this product is amongst the lowest
it gives you all the advantages of R-KEM+ but with a low
on offer in the marketplace today. The ‘sausage’ is easy to use, it is
carbon footprint due to being cartridge free.
clean and compresses into the nozzle once used making disposal as
quick and simple as it gets.
Styrene free chemical anchors
Tecfi Spa, a specialist in fi xing systems and general fasteners, has a wide
range of styrene free chemical anchors including DG 01, the dual component
polyester resin, DG 02, the dual component vinylester resin, and DGE 02, the
new vinylester resin which is under European Technical Approval.
Tecfi explains that the DGE02 is a bonded anchor (injection type) consisting of an injection
mortar cartridge which is under European Approval, Option 7, according to ETAG001 Part 5.
Tecfi points out that the ETAs will be valid for both threaded rod from M8 to M24 and rebar
connections from size 8mm to 32mm.
The DGE02 can be used in concrete, stone, hollow bricks and wood, and can be
installed in dry, wet or even fl ooded holes. Tecfi also highlights that the DGE02
has high pull-out load values and there is no need for premixing as the
resin and the hardener are mixed during extrusion.
Fastener + Fixing Magazine • Issue 61 January 2010
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