<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Amal Mekaoussi, Toufik Karech, Abdelkader Noui</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Numerical Study of the Variation of the Voids Ratio of Soil ImprovedStone Column</style></title><secondary-title><style face="normal" font="default" size="100%">Iranian Journal of Science and Technology, Transactions of Civil Engineering</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2022</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://doi.org/10.1007/s40996-022-00946-2</style></url></web-urls></urls><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">This research work is part of the trend of soil reinforcement procedures aimed at improving poor quality soils. Among these&lt;br&gt;techniques, those that use stone columns. Although the aspects concerning the construction processes are now well mastered,&lt;br&gt;the design methods of these reinforced soils remain to be developed.&lt;br&gt;A numerical simulation presented to study two unit cell models. The 3D proposed simulation model is subjected to gravity&lt;br&gt;and a static load. The first model presents a unit cell composed of stone column in the center and a surrounding clay soil&lt;br&gt;volume. The second is converted into an equivalent unit cell (the volume averaging) in terms of physical and mechanical&lt;br&gt;parameters of a composite material (equivalent parameters).&lt;br&gt;Under the effect of incrementally loading–unloading applied to these unit cell models, voids ratio variations and stress path&lt;br&gt;evolution are analyzed. The results indicate that applying a load to an equivalent unit cell can affect the void ratio-volumetric&lt;br&gt;deformation curves and increase settlement. The void ratio and the corresponding volumetric deformation decreased by&lt;br&gt;comparing the equivalent homogenized model with the non-homogenized model. The results show that the void ratio&lt;br&gt;decreases by about 10% on average, but the volumetric strain decreases by 80%. Therefore, the stress path corresponding&lt;br&gt;to the decrease of the average effective stress by 1% increases the deviatoric stress on average by 10%. Diagrams obtained&lt;br&gt;by numerical results are in accordance with the results derived from experimental observations. The adopted technique can&lt;br&gt;substantially can describe sufficiently the influence of the equivalents physical and mechanical parameters on the improvement&lt;br&gt;in the soil of unit cell.</style></abstract></record></records></xml>