You notice cracks in your floor and pay no mind to them. But beware, because this may be an indication of serious structural deficiencies. Some cracks may have vital consequences. Unless you are a professional in concrete services, you may not be able to tell the difference between which ones need immediate attention and which are superficial.
It is crucial to have a professional assess structural cracks to determine what is significant and what is just on the surface level. Concrete services personnel can properly identify the level and cause of cracking and can give the appropriate repair measures.
There are a variety of reasons why structural cracks happen. Thermal expansion and contraction, sub grade settlement, the load on the structure and even earthquakes can be some of the causes. The bottom line is that the concrete has external and internal stress and this is shown through both large and small cracks.
Once you notice cracks on the walls or floor contact a concrete services professional to do an assessment. Their job is to tell you whether or not the cracks are significant to affect structural integrity. It is not advised to do a DIY solution unless it is an apparent surface crack. There are too many factors involved in structural engineering and chemical formulation to leave anything to chance. Remember that the right solution can only be made once an understanding of the cause is determined.