Without a doubt, concrete is the most versatile construction material on the planet. It can be dyed, stained, stamped, polished or painted in whatever shade you prefer. However, the issue with concrete is that it tends to crack. As a rule, cracking is nearly unavoidable but you can control where and how these cracks develop.
According to concrete residential Lakeville MN experts, both expansion joints and control joints are crucial to concrete flatwork. However, each kind serves a different purpose. For instance, expansion joints are made to allow an entire slab to expand and then contract without coming into contact with a nearby slab, structure or wall. An ideal location for an expansion joint would be between slabs or around electrical boxes. Control joints on the other hand are used to relieve stress from within the concrete slab. The joints, which may be formed with a jointer prior to the concrete setting or can be cut using a saw after it finally hardens. They are designed for the purpose of controlling where a crack may occur by inducing the concrete to crack in the location of the joint.
How many Cracks is Enough?
According to concrete residential Minnesota specialists, one of the most common questions homeowners have regard cracks in concrete is how much cracks is enough or is acceptable? To be honest, there are really no standard rules to follow. However, many contractors point to floor size, perception and, of course safety. If a floor that is comprised of thousands upon thousands of square feet, a few cracks may be acceptable as long as these does not involve structural areas. The primary concern here is of course the aesthetic. Cracks in the floor tend to point to a structural problem if the run through the depth of the slab and begin to come apart in certain areas. Aside from the number, severity of the cracks would be a major factor to determine which cracks are acceptable and which require repair.
Can it be Avoided?
If for instance the sub base is faulty or was not prepared according to specifications then no amount of control joints would be sufficient to limit crack formation. If this is the case, sawing additional control joints in places where there is not enough of them is the only solution. If you notice an abundance of cracks in your floor with varying degrees of severity, consult a concrete engineer so he can conduct and inspection and provide recommendations.