EPOXY RESIN REPAIRS
When you have cracks going through a concrete surface, and you can see from both ends of your concrete wall, epoxy may be injected from both sides. If it’s a concrete floor, you may want to use epoxy resin on the upper surface. Sometimes, using epoxy resin may require that you make it more flowable or apply another technique to inject the light into the concrete. A concrete repairer or builder may also inject the liquid more closely so that it gets deeper into the concrete crack. It’s important that you first repair the cause of the crack before you do an epoxy repair in Australia. This way, there will be no further movement permissible that may cause the crack to reoccur.
What’s Epoxy Resin?
Epoxy resin is an ultra, strong, pourable liquid crack filler that serves as a good option for penetrating, filling, and sealing fine cracks within the concrete, stone surfaces, or brickworks. The formula cures harder than the surrounding concrete and offers a cost-effective waterproof repair solution for your concrete – it’s a repair that stands the test of time. Epoxy resin is highly suitable for pressure injection or pourable crack repairs.
What are the benefits of using Epoxy Resin?
There are many reasons you would want to use epoxy resin. First, it allows easy application and cures stronger than your concrete. It also offers professional finish meaning that your concrete or brickwork will have the desired look after completing the repair. Another reason is that the liquid cracker filler is extremely durable and can last for many years. Again, it can be applied over various ranges of temperatures. Epoxy is ideal for cracks which go up to 2 cm deep meaning that if you have cracks that are deeper than that, it may not be the right repair solution to use for concrete and stone surfaces or brickwork.
Cracks in concrete elements like slabs, beams, walls, columns, and floors undermine the monolithic quality and strength of these structural elements. The material you use to repair a structural element and restore it to an entire monolithic piece needs to have various properties in order to ensure the elements function as originally designed. The structural elements should have high mechanical strength and strong bonding as well as great sealing ability. It also needs to have the right viscosity if the injectable resin is to be applied in order to ensure that the liquid crack filler penetrates into the tiniest gaps in the cracks
When you can’t use epoxy resin
Whilst epoxy offers a good crack repair solution, there are instances when the process isn’t recommended. If the cracks are wider enough – more than 2 cm deep – they shouldn’t be repaired using the technique. Also, if there is water inside the crack and it’s not possible to dry it out, you may want to consider using water repellent epoxy. Concrete cracks occurring due to corroded steel shouldn’t be repaired using epoxy. This is because the steep will continue decaying making new cracks to form.
Prepping the Concrete
Before applying epoxy, the surface should be prepared to ensure quality bonding and cure. Cleaning the crack areas if vital – extend up to about half an inch within each of the concrete cracks. Without proper cleaning, you cannot secure quality bonding to the concrete crack. A high-pressure water jet or wire brush works best to clean the area, but you should ensure the areas dry before you can begin the process. Avoid any tools that may cause additional debris to enter the crack if you have to use drying equipment to dry the surface, use an air dryer. The crack may need to be widened to form a V shape where you no longer notice it. V-shaped cracked tend to offer a more resistant finishing.
Injecting Epoxy Crack
Epoxy resin is injected using ports, so a cracker repairer will first need to install the ports to help eliminate the need for drilling. You need to have the ports properly spaced to allow the epoxy injection to be done at the right locations. For concrete cracks, you can have the ports spaced eight inches apart. Also, the top of the crack needs sealing using an epoxy paste along the crack length.
To inject the epoxy into the crack, you start with the lowest port. The liquid crack filler should be applied until it comes out of the other port. If you are working on horizontal cracks, the injection should begin at the widest part of the crack. Ensure there is constant pressure to allow the epoxy to flow sufficiently without leaving voids.
Seeking professional epoxy resin repair on cracks
Because repairing concrete requires the right technique, skill, and tools, you want to seek a professional concrete repair service. At SPC Australia, we offer quality crack repair using epoxy resin. Contact us today to discuss your crack repair options and find out if epoxy is a good option for you.