It is important to select the correct concrete repair mortar for specific types of repairs. The ASTM C928 (2004) recommends that air shrinkage not exceed 0.15% of the initial length of the repaired concrete. The creep and elastic modulus of the surrounding concrete may also affect the cracking behavior of the repair mortar.
Concrete Repair Mortar
This approach does not adequately prevent cracking and should be supplemented with other measures. Kristiawan (2012) recommends using the ring test to assess restrained shrinkage, which provides a qualitative comparison of the performance of a repaired surface.
Polymer-modified cement mortar is an alternative. This type of mortar is usually formulated with a water-cement ratio between 0.3 and 0.6 and is spread in thin layers. Epoxy mortar is an alternative to traditional cement and is made up of a mixture of epoxy resin, hardener, sand, and a polymer that makes the mortar resistant to wear. This type of concrete repair product is applied in thin layers and is best suited for cracks and small joints. This type of concrete repair material is often used on a sub-par surface.
If you’re using epoxy mortar, you will have to remove the damaged concrete from the area where you’ll be applying the patch repair. This can be done with a hammer and chisel or a masonry grinding disc, or by utilizing a portable drill. It is also necessary to wear proper protective gear and waterproof gloves while handling cement-based products. Once you’ve removed the loose material, you’ll need to clean the surface thoroughly with a solution of QUIKRETE Concrete and Asphalt Cleaner Concrete patio. This product is a concentrated detergent that is safe for any surface.
A polymer-modified cement mortar has a water-cement ratio between 0.3 and 0.6. It’s applied in thin layers and creates a protective layer against wear and tear. Another type of epoxy mortar is called epoxy mortar. The combination of epoxy resin, hardener, and sand is used to create this product. It provides a high barrier to wear and tear. And it’s easy to apply and is ideal for cracks and holes.
Polymer-modified cement mortars are available in various types, including epoxy and polymer-modified mortar. They are both suitable for spalling and can be applied in thin layers up to 40mm thick. The application method is very effective for cracks and spalling. The product is a versatile solution for all types of cracked or damaged concrete. Its application is simple and effective. The application method is fast and convenient, and the epoxy-modified cement mortars have excellent durability.
There are four major types of concrete repair mortars. The first type is portland cement. It’s typically used for cracks and holes. A polymer-modified cement is used for new concrete surfaces and for repairing concrete floors. QUIKRETE’s Rapid-Setting Multi-Purpose Concrete Repair Mortar is available in varying water-cement ratios between 0.3 and 0.6. This type of mortar is ideal for cracks and can be applied in a layer as thin as 40mm thick.