What is used to prepare the concrete surface?

Shot blasting The impacts of shot blasting spray concrete and contaminants and roughen the surface. Shot blasting is a preferred method for cleaning and profiling horizontal surfaces and has the same applications as abrasive blasting.

What is used to prepare the concrete surface?

Shot blasting The impacts of shot blasting spray concrete and contaminants and roughen the surface. Shot blasting is a preferred method for cleaning and profiling horizontal surfaces and has the same applications as abrasive blasting. Surfaces are also prepared prior to various floor covering installations in industrial, commercial and institutional applications. The most important feature for the coating of materials or floor coverings is the texture of concrete.

This section provides an overview of the steps required for surface preparation, as well as an introduction to the machinery used. The concrete preparation process determines the success of surface repairs and coating joints. To make concrete repairs that last, you will need the repair material to adhere to the surface securely. An improperly prepared concrete surface can cause concrete and repair material or coating to peel off.

Made in Australia since 1935.First, remove any unwanted materials such as paint, tile or carpet glue with a good quality floor scraper. You can get self-propelled floor scrapers and even seated floor scrapers that have the ability to increase surface preparation efficiency, especially for larger projects. Many people prefer to use shot blasting machines to peel their surface in preparation for coating or painting, as they are often time-saving and cost-effective. By creating a porous surface through steel shot propulsion, blasting machines not only remove the surface of concrete, they have the potential to improve coating adhesions.

For heavy-duty surfaces that are likely to cause problems, a scarifier works to fracture coatings with rotary cutters. However, keep in mind that while they may be more effective in removing heavy epoxies and other coatings, scarifiers do not smooth surfaces like grinders and other machines do. Acid etching is a very low-cost chemical method commonly used to treat concrete floors to eliminate laitance and provide a profile. During the preparation of the concrete surface, you can use a variety of methods to roughen the surface, including etching and abrasive blasting.

Contractors and manufacturers are divided between roughening concrete by mechanical profiling or acid etching. Pour a bucket of water on any unsealed concrete floor and you will see that almost the entire amount simply disappears. Avoiding coating failure due to moisture requires the contractor to perform a simple moisture test on a small area of shot-blasted or ground concrete. If two concrete slabs are poorly placed at a different height, the grinder is used to smooth the transition from one slab to the other.

To assist contractors in making this assessment, the International Concrete Repair Institute has developed reference guidelines for the CSP-a measurement of the average distance from surface peaks to valleys. If the customer was expecting a polished concrete floor and the exposed concrete is in poor condition, he will get an unpleasant surprise. Unlike other concrete floors, your garage concrete floor will need a protective epoxy coating to resist oil and grease stains and make it easy to clean. If shot blasting or scarifying is used to remove the top of the concrete surface to profile the concrete, this opens the pores of the concrete.

Once the contractor removes the old floor, the next step is to prepare the concrete for the new coating. As mentioned earlier, it is important to realize that concrete is like a sponge, it is filled with ventilation holes. For proper bonding of concrete coatings and coatings, it is important to give the surface the correct concrete surface profile, or CSP. If it doesn't feel as rough as a 180 grit sandpaper or rougher, you'll need to use acid to etch the concrete floor.

It should be borne in mind that improperly performed mechanical preparation can seriously damage a concrete floor. .

Riley Ryan
Riley Ryan

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