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AE Test of Calcareous Sands with Particle Rushing

Abstract

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.

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Effective Friction Angle Of Deltaic Soils In The Vistula Marshlands

] [%] [%] [%] [%] Organic silty clay (OH) 3.2÷4.05 54.4 ÷75.9 14.22 ÷14.52 2.54 ÷2.61 40.7 ÷55.3 90.4 ÷119.0 49.7 ÷63.7 11.4 ÷16.2 Organic silt (OH) 9.5÷10.5 45.4 ÷57.3 15.6÷16.6 2.54 ÷2.67 228.3 ÷38.0 53.7÷57.1 15.7 ÷27.55 4.2÷7.1 Peat (Pt) 13.0÷14..0 179.2 10.5 1.57 N/A N/A N/A 87.2 2 Testing Methodology 2.1 Triaxial tests The consolidated undrained (CU) triaxial compression test ( ASTM D4767, 2011 ) was conducted on muds (organic silty clay and organic silt) taken from 3.2–4.0 m and 9.5–10.0 m and on peat from

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Effect of Geotextile Reinforcement on Shear Strength of Sandy Soil: Laboratory Study

-14, www.astm.org [6] 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 [7] ASTM D4767, Standard test method for consolidated undrained triaxial compression test for cohesive soils, ASTM International, West Conshohocken, PA, 2011, www.astm.org [8] 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

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On consistent nonlinear analysis of soil–structure interaction problems

′ $\begin{array}{} \displaystyle \sigma_{3}^{\prime} \end{array}$ 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 consolidated undrained (CU) test, including shear wave velocity measurement, and oedometer test. The latter one is

Open access