Concrete floors and subfloors can be repaired using one of three common methods. All this involves covering the existing concrete slab with a new layer of concrete or a layer similar to concrete and finishing the new layer as desired. These methods can be used on interior and exterior surfaces and are intended only for surface restoration; they are not suitable for repairing major cracks or other structural problems in existing concrete slabs. To begin, start by running a chisel through the crack to remove any obviously loose pieces of concrete. Then, use a small brush to coat the surface of the crack with adhesive adhesive for concrete.
Allow the adhesive to dry completely. The patch mix is made of vinyl, Portland cement and sand, and it covers cracks up to 1/2 inch wide. Moisten the area around the crack, and then apply the mixture with a trowel. Smooth the surface with a trowel or a small float. If the surface has too many exit points for individual repairs, or if during the repair the surface suffered delamination, contractors should consider using a thin bonding concrete layer. Small repair projects can be carried out with putty cartridge type equipment and several companies manufacture their products in cartridges for such an application.
To prevent this damage from spreading too quickly and to avoid potentially unsafe conditions, you must repair these problems before they become too severe. As a first step in increasing the likelihood of a successful repair, it is essential to use a consistent and systematic approach to concrete repair.If the concrete floor to be repaired is crowded, has large or wide cracks, or is damaged due to freeze damage, other alternatives should be considered instead of resurfacing. Contractors should approach repairing plastic shrink cracks and drying shrinkage in the same way. Coarse repairs refer to repairs that are approximately 3 inches thick and that completely encompass at least some reinforcing steel of the existing structure. Concrete sealing and coating compounds are applied to cured and dried concrete as a maintenance and repair procedure to reduce or prevent the penetration of water, aggressive solutions or gaseous media. However, in most outdoor applications, it is best to repair these cracks to prevent water ingress that could lead to corrosion of the reinforcing bars, uneven settling or slab movement.
Patterned concrete provides a durable and low-cost solution, offering a wide range of colors and patterns to choose from. Resin injection is used to repair cracked or delaminated concrete, as well as to seal cracks or joints in concrete that is experiencing water leakage. Such systems, except solid two-part polyurethanes, have relatively low strengths and should not be used to structurally rejoin cracked concrete. Self-leveling treatments can be applied to most concrete floors and are thick enough to help correct uneven surfaces and relatively deep surface damage. If I were to demolish a house, I would be sure to hire a concrete slab sawing service, since they are equipped with the right tools and equipment.