Effect of monotonic and cyclic temperature variations on the mechanical behavior of a compacted soil

Settlement and slope stability of an embankment are mechanical aspects that play a major role in structural safety. Due to the tendency towards renewable energy, embankments can be considered as suitable medium for thermal energy storage. Using horizontal heat exchanger tubes, will stored different compacted soil layers embankment. Therefore, this structure subjected daily seasonally temperature variations due extraction. Cyclic variation modify behavior soils. Thus study aims investigate effect monotonic cycles range 5 50 oC, on consolidation parameters shear characteristics sandy lean clay. To achieve this, temperature-controlled oedometric direct tests were performed. Results showed heating cooling properties is more pronounced under vertical stresses higher than preconsolidation pressure. By heating, normal line shifted left consequently, apparent decreased. Compression swelling indexes could independent variation. cycles, volumetric response was stress history-dependent. by (heating/cooling cycles) cohesion increased friction angle remained unchanged.