Fengyi Tan, Xinzhi Wang, Mingjian Hu, Ren Wang and Changqi Zhu
The particle of calcareous sands was forced to crush, then the energy from the crushing was released by the form of sound waves. Therefore the AE technique was used to detect the calcareous sands AE signal when it crushed. by to study the AE characteristics, the mechanics of calcareous sands was studied. Study showed that: (1) there was the AE activities on the low confining pressure condition at the beginnig of test, (2) there was more and more AE activities with the continuing of test until to the end, (3) the calcareous sands’ AE activities was on the whole testing, (4) the calcareous sands’ particle crushing and mutual friction played different roles for its AE activities. Then the AE model based on the calcarous sands’ particle crushing was discussed.
Sidali Denine, Noureddine Della, Muhammed Rawaz Dlawar, Feia Sadok, Jean Canou and Jean-Claude Dupla
 ASTM D422-63, Standard method for particle-size analysis of soils, Annual Book of ASTM Standards, 1989, Vol. 04.08, 86-92. West Conshohoken, www.astm.org
 ASTM D4767, Standard test method for consolidatedundrained triaxial compression test for cohesive soils, ASTM International, West Conshohocken, PA, 2011, www.astm.org
 BELKHATIR M., DELLA N., ARAB A., SCHANZ T., Laboratory Study on the Hydraulic Conductivity and Pore Pressure of Sand-Silt Mixtures, Marine Georesources and Geotechnology, 2014
stress dependency is used. The complete theory of the model, implemented in the ZSoil software, with all introduced modifications, can be found in the detailed report written by Obrzud and Truty [ 10 ]. It has to be emphasised here that most of the HS model parameters have clear physical interpretations, and model calibration can be made using standard triaxial consolidated drained (CD) or consolidatedundrained (CU) test, including shear wave velocity measurement, and oedometer test. The latter one is