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The separation of particles with big inertial mass transported in the air, is most often done with the help of cyclones, due to their resistance to wear at contact with abrasive particles. However, pneumatic conveying of heavy and abrasive granular material mixed with fines, are problematic even for cyclone hardened inlets. The paper studies a new...
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Die Autoren haben in vorangegangen Studien verschiedene Konzepte zur passiven Schwingungsdämpfung vorgestellt, die im Wesentlichen die hohe innere Reibung granularer Medien als Dissipationsquelle nutzen. In diesem Beitrag soll nun das granulare Material im Fokus stehen, das für die Partikeldämpfer genutzt wird. Im Rahmen experimenteller Studien wer...
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Geogrids are involved in stabilization projects worldwide for around three decades already. The function has been called for quite a long time as the reinforcement of subbase, base or ballast according to the application. Only recent observations both from laboratories and field prove that it is not the strength which is the factor controlling this...

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Article
A laser scanning device is introduced to measure radial displacements in triaxial testing apparatuses. The equipment provides contactless measurement of the radial displacement of the test specimen over the whole specimen height. Additionally, a method is proposed for determining the initial specimen volume from the scanned specimen profiles as well as the change in volume during test performance. These methods are then evaluated, based on test results from a drained stress path test on Swiss lacustrine clay.