Adaptation and Calibration of the Faulting Model for Thin Concrete Pavements

Abstract

Joint faulting is a pavement distress that affects the comfort level of jointed plain concrete pavements. The appearance of joint faulting usually occurs in areas of high traffic of trucks at high speed. Variables such as level of rainfall and the erodibility of the subbase increases the magnitude of this phenomenon. To predict joint faulting in Thin Concrete Pavements, the design software OptiPave2, launched in 2012, used the same model developed for the Mechanistic Empirical Pavement Design Guide (MEPDG), which uses an energy differential model. After 6 years of the release of the software and after 10 years since the construction of some thin concrete pavement projects, there are pavements with clear signs of joint faulting and others without. For this reason, the OptiPave2 model was reviewed and compared with field data, concluding that the faulting model needed to be adjusted This new model was calibrated with the data from existing concrete pavement projects.

Curling of Cast-in-Situ Short Slabs on Lean Concrete Base: Measured Versus Theoretical Analysis

“…From the previous observations of the curling of an industrial floor slab 0.15 m thick and 4.0 m long, it was found that the corners were lifted up with a small portion of slab supported at the center ( 16 ). This corner lift-off is believed to be 0.25 times the total length of the slab in the case of CiSPCP as shown in Figure 1 ( 17 ).…”