Effects of thermal shock
Pathology of dampness - Simple wall - Case study: a concrete shell

Under the action of temperature, all materials undergo :

• or variations in length if they are "free", in the sense of the resistance of materials (RdM), i.e., without connections and/or embeddings;

• or internal constraints if they are subject to "links".

To evaluate variations (linear or constraints), let's take as reference median temperatures :

• for indoors: T _mi ≥ 20 °C ;

• for outdoors: T _me ≥ 15 °C.

Let's determine the distribution of the gradient ΔT ≥ T _mi– T _me ≥ 5 °C, in the various layers making up the wall, using the proportionality coefficients in the design brief (see table