Updated on October 5, 2022
Factors to Consider When Choosing a Concrete Repair Service
It is important to understand the causes of concrete failure before attempting a repair. Then, the repair method should be chosen to maximize the repair’s effectiveness. There are many factors to consider when repairing concrete. For instance, the existing concrete structure must be sufficiently strong to withstand the materials used. If the concrete structure is not sufficiently strong, the repair material may fail or cause cracking, spalling, or delamination. If any of these factors are overlooked, the results will likely be substandard. Another important factor to consider is the concrete’s coefficient of thermal expansion. Finally, the bonding between the concrete and the repair material is critical for success.
Cracks and uneven surfaces on concrete are telltale signs of damage. Concrete Contractors will inspect the problem area and recommend the most effective repair method. Cracked concrete is an obvious symptom of a problem and can even threaten your home’s foundation. Cracked concrete can be repaired for much less than a full replacement. In some cases, a leveling job may be required. It is important to consider all of these factors when choosing a concrete repair service.
Random spalling occurs when a layer of concrete erodes away from another layer. This may be due to ground shifting or exposure to corrosive elements. In some cases, this damage is due to improper concrete installation. Repair materials for random spalling include two-component epoxy-based mortars, primers, and silica. Overlays, which are necessary on poor-quality concrete, may require acid etching or primers.
A structural crack in concrete may require an epoxy injection to bind the cracks and stop the water flow. A skilled contractor is required for this process. An epoxy-based substance is injected under pressure into the crack and welds it to form a monolithic structure. While epoxy is an effective structural bonding method, it should not be used on active cracks. A urethane sealant may be used to repair the active cracks, but it is not a structural bond. If the crack is still active, it may be necessary to open it with a concrete saw or hand tool.
In addition to these issues, concrete repair significantly impacts society and the environment. These activities contribute to the depletion of natural resources and generate massive quantities of CO2 emissions. These emissions cause air pollution and noise pollution, which are both detrimental to society. Furthermore, concrete repair activities cause unnecessary discomfort to users. As such, engineers have an important role to play in creating eco-friendly repair systems and fulfilling the design requirements. The process is not straightforward, but with a little effort, it can be an effective way to protect the environment.
While the process of concrete repair may seem daunting to many homeowners, it is actually easy to patch and restore damaged surfaces. The main step in repairing concrete is choosing the right repair material. Fortunately, today there are concrete repair products specially formulated for specific needs. The best type of repair material will depend on the type of damage. Several different types of damage can occur to a concrete structure, including abrasion, chipping, or peeling.
If the concrete repair is too small, reforming may be required. Broken areas must be removed to a gravel fill level, a couple of inches below ground level. Then, fill the hole with the correct mixture with trowel. Form boards must be level with the adjoining concrete surface. If the repair has a new surface, the form boards should be level with the new surface.
Once the forms are installed, they should be staked every four feet.
Cracks with less than 1/4 inch openings can be filled by applying crack sealant. In addition to crack-healing cement, the repair material can be partially filled by adding sand to the crack. Cracks with more than a quarter-inch depth may require a combination of cement and sand to repair the concrete. In the latter case, the crack sealant can be applied in a couple of layers, or even a single layer.
If the crack is shallow and confined to one area, concrete patches can be installed with ease. Concrete patches are easy to apply, and they can be troweled onto the damaged area. However, the concrete patch must not block the expansion joints to avoid water from running off and future cracking. A small crack may set to a firm consistency within minutes. A thicker patch, on the other hand, will need a couple of hours to harden.