What is meant by Theoretical Thickness in Concrete?
Join TheConstructor to ask questions, answer questions, write articles, and connect with other people. When you join you get additional benefits.
Log in to TheConstructor to ask questions, answer people’s questions, write articles & connect with other people. When you join you get additional benefits.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Theoretical thickness = (C/S Area of the section ) / (Semi perimeter in contact with the atmosphere.)
Where, semi perimeter = perimeter /2
For example, Consider a 150 mm side cube, and assume these three sides are exposed to the atmosphere
Thus the theoretical thickness for the given cube and given exposure conditions is 100 mm.
Where is it used?
Theoretical thickness is generally used in the study of creep or drying shrinkage of a structure. During dry shrinkage, the water is expelled outside of the concrete. As a result, the water travels a path. This path is expressed in terms of theoretical thickness.
Basically the theoretical thickness formula ;
theoretical thickness = (C/S area of the section) / (semi perimeter in contact with the atmosphere)
here, semi perimeter = perimeter/2
The thickness of the concrete cover measure is usually part of the concrete quality control in modern construction so as to ensure that the thickness of the concrete cover in conformity with the specifications. The process of measuring the thickness of the concrete cover in structures was noted by the beginning of the corrosion, as the lack of concrete cover thickness increased the corrosion rate for corrosion as a result of chlorides or carbonation, where it expedited the propagation inside the concrete, causing the speed of steel corrosion as well as the lack of cover helps the propagation of moisture and oxygen, which are form the main basis for the corrosion process.