1. Different movements of structures and joints
Public works structures are essentially made of concrete and steel, with various roadway coatings, mainly hydrocarbon binders.
Concrete is a living material that undergoes deformation, firstly during the setting of the cement (shrinkage), and secondly throughout the life of the structure when it is subjected to various stresses: dimensional variations, displacement and various movements studied below.
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Thermal and hygrometric dimensional variations, daily and seasonal
The temperature-dependent length change of an unstressed structure is calculated by the formula :
with :
- L :
-
initial length of the element in question,
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Different movements of structures and joints
Designing concrete pavement joints
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