Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"Bender elements"”.
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Small strain stiffness of fine grained soils
… out both in the laboratory, using piezoceramic bender elements of the type developed at the Norwegian Ceotechnical Institute and at the University College of North Wales, and in situ, using surface wave techniques. For the purpose of the research described in this dissertation, the piezoceramic …
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The study of shear and longitudinal velocity measurements of sands and cohesive soils
… of soils, with an emphasis on the use of bender element technology in obtaining the shear modulus. The experimental program consisted two primary stages. The beginning part of the experimentation was concerned with evaluating the behavior of bender elements, both free-standing and when …
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Stiffness characterization of mechanically-compressed cohesive soils using wave propagation
… soft cohesive soils with ultrasonic transducers, bender elements are typically used, which couple to the soft clay. Unfortunately, the stress limitation of bender elements precludes it from testing above 1.5 MPa. A novel setup using ultrasonic transducers, with electronic conditioning, is …
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The measurement and interpretation of small strain stiffness of soils
… while dynamic stiffnesses were measured using bender elements. Using the two methods good agreement was found between the stiffnesses at 0.0001% strain for two different materials. Bender elements measure the propagation time of shear waves through a soil sample so that the value of Gnax can be …
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Geotechnical Characterisation of Pumiceous Soils for Liquefaction Assessment
… such as cyclic/monotonic triaxial tests and bender elements, were performed on high-quality undisturbed and reconstituted pumiceous samples taken from sites in Waikato Basin and Bay of Plenty to investigate the geotechnical behaviour of natural pumiceous (NP) soils. These were supplemented by …
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An Experimental Study on the Aging of Sands
… aging process: small strain shear modulus using bender elements, electrical conductivity, and mini-cone penetration resistance. At the end of each test, detailed mineralogical tests were performed to assess changes in the chemistry of the samples and pore fluids. A total of 22 tests in rigid wall …
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Static and Dynamic Performance of Biochar Enhanced Cement Stabilised Peat
… of an increased hydration. The findings from the bender elements tests and cyclic triaxial tests showed that the shear stiffness increased with the inclusion of biochar. And finally, the increase in performance in biochar samples translated to a small amount of cumulative plastic strain under …
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Long-term response of soils subjected to repetitive geoenvironmental loads
Repetitive loading cycles originate from a variety of natural and industrial processes, affect soil properties and the long-term performance of geotechnical systems. This thesis provides unprecedented experimental data and physical analyses of repetitive environmental loading cycles on …