Cracks In Concrete Slab Floors

Types of cracks in slab foundation.

Cracks in concrete slab floors. Cracks in concrete floors or slabs occur in poured concrete slabs may be found both in basement and in slab on grade or patio home construction and have a variety of causes and cures that we discuss here as we explain how to repair cracked concrete floors and as we describe slab on grade construction or patio home construction cracks and as we review the diagnosis of cracks in ceramic tile over concrete slab floors. Types of cracks in slabs shrinkage cracks in a slab are unlikely to be of any structural concern but can be a source of water entry or radon. One of the most common mistakes that people make when looking at their garage. Contraction joints or control joints when cracked are really just straight shrinkage cracks.

Settlement cracks in a slab indicate inadequate site preparation such as failure to compact fill on which a slab was. Growing active cracks in concrete slabs or walls sticking or gaps in doors and windows cracks in tile floors cracks in the drywall or stucco brick at window corners diagonal or stair step cracks in drywall stucco or brick floors that are sloped humped or out of. Control joints and cracks. Many concrete contractors will say that there are two types of concrete.

Cracks in a concrete garage floor. Settlement cracks result from a deficiency in the original. These cracks also occur when the concrete is cured incorrectly i e if the surface dries much. When are they serious cold joints look like cracks but are ok.

These are extremely thin but possibly deep cracks. Before the concrete hardens in a plastic state it is full of water which takes up lots of space and increases the size of the concrete slab. The classification that they have created extends from 0 5 0 being defined as a hairline crack up to 0 1 millimetres and 5 being defined as structural damage cracks greater than 25 millimetres. They are primarily caused by the concrete.

Cracking resulting from adding excess water in the concrete mixture is called plastic shrinkage cracks. As soon as this slab loses the excess moisture it shrinks. Frost heaves or expansive soil.