چکیده مقاله
Sand bentonite mixtures are usually utilized as a liner of municipal waste disposal facilities These widespread liners are constructed in thin layers and therefore, indicate an oedometric behavior Hence, experimental study of at rest lateral pressure of these soils is an important step for understanding the hydro mechanical behavior of the abovementioned barriers In this paper a novel oedometer is introduced to determine the coefficient of lateral pressure of soil The almost rigid ring of the modified apparatus has three circular diaphragms with the diameter of 15mm and the thickness of 0 35mm Three LVDTs are installed in contact with these diaphragms to measure the horizontal deformation of the thin diaphragms induced by the horizontal pressures The diaphragms are calibrated using the water hydrostatic pressure and the pressure and deformations are correlated Twenty five percent of the studied material is composed of bentonite and the rest of soil is the Estahban well graded sand Coefficient of at rest lateral pressure of the material is determined at various stress states and the results at normally and over consolidation conditions are discussed in details
کلیدواژهها
نویسندگان
Mohsen Monghasem
Graduate Student, Islamic Azad University, Estahban Branch, Iran
Mohsen Ajdari
Faculty Member, Islamic Azad University, Estahban Branch, Iran
شیوه ارجاع
Monghasem, Mohsen and Ajdari, Mohsen,1391,Experimental Investigation of the at Rest Lateral Pressure of an Artificially Prepared Sand-Bentonite Mixture,9th International Congress on Civil Engineering,Isfahan
ارائهشده در
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