It’s pretty much impossible to find a piece of concrete that doesn’t have some crack or flaw. Even though concrete is one of the most common and versatile construction materials globally, is still susceptible to developing cracks. But not all cracks are the same. This post is all about breaking down the common types of concrete cracks, what makes them happen, and what you need to do to keep your concrete in top-notch shape.
Plastic Shrinkage Cracks: The Tricksters
Plastic shrinkage cracks are caused by a rapid loss of water from the surface of the concrete before it has set. The critical condition exists when the rate of evaporation of surface moisture exceeds the rate at which rising bleed water can replace it. Plastic shrinkage cracks are unsightly but rarely impair the strength or durability of concrete floors and pavements. High ambient temperatures, high winds, and water additions are just some of the many factors that can contribute to plastic shrinkage cracking. Using synthetic fiber reinforcement in your concrete mix is one of the best ways to mitigate plastic shrinkage cracks.
Settlement Cracks: The Silent Threat
These types of cracks appear when the ground underneath the concrete slab wasn’t adequately compacted or prepared. As the ground settles unevenly, the concrete moves with it, leading to these vertical fractures. This movement may lead to the sinking of concrete foundations or slabs, therefore producing a crack. Control joints and soil stabilization can often prevent these cracking incidents.
Structural Cracks: The Loud Menace
Unlike the others, structural cracks could potentially cause trouble as they hint towards a significant foundational issue. These large, wide gaps are often caused by the structure bearing more load than it’s designed to handle, weak concrete, or substandard construction work. Any evidence of structural cracking necessitates urgent action.
Thermal Cracks: The Temperature Tricksters
Fluctuations in temperature can wreak havoc on your concrete structures. When the concrete doesn’t have time to expand and contract in response to the weather, it forms thermal cracks. Ensuring thermal joints are appropriately placed and utilizing temperature-resistant mix designs are ways to keep thermal cracking at bay.
The crack type tells a story about what’s happening within and around your concrete. While minor shrinkage or settlement cracks can usually be handled with ease, structural cracks should raise immediate alarms.
Cracking might be a universal concrete experience, but we at Quality Concrete believe that it doesn’t have to compromise quality, durability, or aesthetic appeal. Whether it’s hairline cracks or a massive fissure, we have your back. So don’t let your concrete woes bog you down, get in touch with us today and ensure a cracking experience!