Determination of Coefficient of Thermal Expansion Effects on Louisiana's PCC Pavement Design, Technical Summary Report 451

摘要

The objectives of this research were to measure typical CTE values of concrete mixtures used for PCC pavement structures to investigate the relationship between CTE and other critical variables such as aggregate types, age of concrete, dimension of specimen, amount of course aggregate in mixture, relative humidity, and concrete mechanical properties, and to assist in the implementation of MEPDG for PCC pavement design in Louisiana. Recommendations for the coarse aggregate type in the mixture and maximum joint spacing in JPCP are provided based on results of the MEPDG analysis. This study also calculates the curling stresses in the PCC pavement due to non-linear temperature and moisture gradient throughout slab thickness.