Recapitulation

• Concrete pavement is generally modeled as thin plate resting on elastic foundation. The load stress is tensile at bottom. The solutions are different for different types of foundations, such as Winkler, Pasternak, Kerr etc.
• The temperature stress develops in concrete pavement due to the change of temperature and the existence of temperature gradient across its depth. Most of the studies show that this temperature distribution is non-linear.
• The temperature stress can be considered to be composed of three stress components, viz. axial, bending and residual. Generally, the axial stress in concrete pavement gets dissipated due to provision of various joints.
• Primarily self-weight provides the restraint against bending (due to temperature gradient) of concrete pavement. During the day time, a concrete pavement is expected to experience tensile stress below the neutral axis.