Series of tests at building project B 174, Gornau Chemnitz

Recently abroad, increasing demands on quality control in road construction, as well as the development of new technologies has led to the development of three new rapid test methods for compaction control in earthworks. The measurement principles, the measurement errors and the suitability of the newly developed devices, and the transferability of the results to conditions in Germany, are to be examined in a research project. For this purpose, the Federal Ministry of Transport, Building and Urban Development (BMVBS), represented by the Federal Institute for Highway Research (BASt), has commissioned the Chair of Earthworks and Civil Engineering of the Technical University of Freiberg (Prof. Dr.-Ing. Wolfram Kudla) for the research project, FE 05,156 "Suitability check of rapid testing procedures for compaction control".

The new instruments are the U.S. "GeoGauge", the "Hungarian compression and load capacity gauge" and the French "Panda probe". The three new rapid test methods were developed for use in unbound layers of the roadbed and road surfaces. The goal of this project is to test and assess the method in the context of quality control in German road construction.

For this purpose, pilot plant tests are performed in the experimental hall of the university, and field trials at various construction sites, and the methods of measurement are compared with the classic, standardised test method.
Josef Rädlinger Bauunternehmen GmbH provided the Technical University of Freiberg with several test fields on site "B 174 Gornau-Chemnitz", upon which the measurements instruments were tested on different soils and in different states of compression. Through the support of Rädlinger, it was possible to smoothly implement the sometimes high test requirements under practical conditions.
After the project, Dipl.-Wi.-Ing. Martin Uhlig and Prof. Dr. - Ing Wolfram Kudla expressed their gratitude for the support of Rädlinger: "We, the researchers, thank Rädlinger for the opportunity to carry out the tests on the site of B174, and for the support during this research project. We especially thank Mr. Krug and the entire construction team on site."


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