Evaluation of attrition tests for railway ballast, by Dipl.-Ing. Holger Bach.

For those interested in the properties of railway ballast and durability – and the use of PETROSCOPE 4D – and if you are near to Graz in Steiermark, Austria!

Then you should go to Graz University of Technology/ Technische Universitet Graz on Thursday 18 July 2013 for the defence of the doctoral dissertation, Evaluation of attrition tests for railway ballast, by Dipl.-Ing. Holger Bach.

In German: Dissertation zum Thema “Verschleißversuche an Bahnschotter”. Das Rigorosum wird am Do 18.7.2013 um 1100 Uhr im Seminarraum Verkehrswesen (2. Stock Alte Technik) stattfinden (Presentation und Pröfung auf Deutsch).

From the abstract:
… The measuring device „Petroscope 4D“ was used to characterize the geometry of all particles in the respective sample. This allowed for classification of the test methods into the attrition categories „fragmentation“, „rounding“ and „abrasion“ and for finding factors of influence with respect to deviations in the results obtained. …

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