Curling Stress Equation for Transverse Joint Edge of a Concrete Pavement Slab Based on Finite-Element Method Analysis

Abstract

In the design of concrete pavement, curling stresses caused by the temperature difference between the top and bottom surfaces of the slab should be calculated at the transverse joint edge in some cases. However, no such equation has been developed in the past. Accordingly, a curling stress equation was developed based on stress analysis using the finite-element method (FEM). In this FEM analysis, a concrete pavement and its transverse joint were expressed by means of a thin plate–Winkler foundation model and a spring joint model, respectively. Multiregression analysis was applied to the results of the FEM numerical calculation and, consequently, a curling stress equation was obtained. After comparing the calculated results of the equation with curling stress equations developed in the past, it was confirmed that the equation was valid and practical.

Electrical Current Flow and Cement Hydration: Implications on Cement-Based Microstructure

“…Temperature is an important parameter which significantly affects materials properties and performance at early age, such as strength [4], [5], thermal stress [6] and distress (i.e. cracking) [7], [8]. The temperature development in a cement-based system is not  Manuscript received September 17, 2016; revised November 17, 2016. only effected by the above-mentioned internal factors but also related to external factors (i.e.…”