Prolonged exposure to weather changes can cause existing structures to contract and expand. This eventually leads to cracks and breakage in concrete over time. How is this fixed?
Ray Schrader Changed status to publish March 6, 2024
The six main ways to prevent cracks and breakages are:
- Properly curing the concrete after pouring.
- Using quality materials in construction.
- Prepare an even and stable base for the concrete before pouring.
- Applying moisture barriers such as acrylic silicone sealers yearly to protect against water intrusion.
- In severely hot or dry weather, spray the concrete with water and cover it with a damp-proof material to prevent the water from escaping. This will ensure optimal curing and prevent cracks.
- Control joints; in new concrete structures, control joints are intentionally placed to guide cracks, because in some instances they are inevitable.
Five ways of fixing cracks or breakages in concrete:
- Epoxy injection, which involves injecting an epoxy resin into the cracks to bond and seal them.
- Concrete patching; clean the crack thoroughly, apply the patching material and smooth it out, then allow it to cure.
- Chasing and sealing; widen the crack using a chisel and hammer to create a V-shaped groove, clean the groove and fill it wit a sealant.
- Resurfacing; clean the surface, apply a bonding agent and pour a thin layer of fresh concrete. This will cover the cracks and provide a new, smooth surface.
- Carbon Fibre strips or sheets can be bonded to the concrete surface, this will reinforce the cracked area and prevent further movement.
Ray Schrader Changed status to publish March 6, 2024
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