WHEN ARE RESIN BONDING AND ANCHORS USED

The Prevention and the cure

With resin bonding, there are various circumstances when a traditional anchor fixing or expanding screw or plug can cause damage through cracking or splitting of the brittle cement, brick or concrete it is inserted into. This often occurs near the edge of a concrete slab or brick pier and can not only have an affect on the efficacy and strength of the actual fixing but the aesthetics of the substrate.

Resin bonding and anchors can be used to overcome this issue by giving any fixing a strengthened anchor. To begin with a hole is drilled and then resin is injected while it is in semi-liquid form and this hardens quickly and provides either an equivalent or stronger load bearing or pull than a more traditional fixing. When the resin is injected it bonds internally with the masonry to provide it with increased strength for bearing loads. In other words, rather than using a more traditional anchor fixture you are using a semi-liquid product that is similar to glue instead.

Normally a threaded bar or a section of studding is inserted into the resin bonding while it is still liquid that will allow fixtures to be bolted into it. Crucially though, you need to make sure that the fixing has been prepared cautiously to achieve the maximum amount of strength possible.

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Preparing For Resin Bonding and Anchors

Clean and Remove Debris

After drilling the hole you want to fix into it, it is crucial that you clean out any dust or debris, especially when dealing with fixing points designed to bear heavy loads.

The resin bonding anchors to the concrete or masonry inside the hole and if there is any debris or dust there inside the hole, it will bond with that, which can serious problems with the holding strength the fixing has after installation.

Resin Bonding Injection

To inject the resin bonding, a special applicator gun is used. It is crucial to make sure the width and length of the nozzle is the correct size and then you slowly pull the nozzle out to prevent air bubbles from developing.

Protecting or Masking The Stud Once It’s Threaded

In order to avoid the thread being blocked with resin or otherwise contaminated, masking tape or electrical tape or an alternative form of protection should be used for the stud. To achieve the best results possible, you should wind the fixture into the resin bonding in a circular motion similar to winding a screw into timber.

Set It Correctly or Leave The Resin To Go Off

In order to make sure the fixing is strong enough, you need to make sure you give the resin bonding enough time to cure or ‘go off’. How long this actually takes will depend on the specific guidelines outlined by the manufacturers. Generally speaking, modern resin bonding products set fast and are generally ready to bolt on in an incredibly short period of time. It goes without saying though that with heavier installations that need this kind of resin bonding fixing, the more crucial it is that it is set properly.

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