Nemeh, Deeb

Diploma Thesis:
1871

Topic:
Applicability of the EIT to the continious deconstruction of horizontal pavements
made of asphalt and concrete

Editor:
Deeb Nemeh

University Professor Responsible:
Univ.-Prof. Dr.-Ing. Dipl.-Wirt.-Ing. Jens Otto

Supervisor:
University Supervisor: Dipl.-Ing. Lukas Hammel

Editing Period:
29.09.2021 until 29.01.2022

Abstract:
The EIV is a new decommissioning method, which is based on high pulse voltages. Compared to the conventional deconstruction methods, the EIV has shown many advantages. This method has already been investigated in tests on granite and natural stone. Based on the knowledge gained from the tests already carried out, further tests were to be carried out in the context of this work in order to investigate the applicability of the EIV for the continuous deconstruction of horizontal asphalt pavements. The trials were scheduled using the statistical design of experiments. The target variables of the test were the dimensions (length, depth and width) as well as the volume of the removal; as a further target variable, the driving speed over the test specimen could be measured during the test. In order to determine their effect on the loosening process, the frequency
and the pulse energy were varied. After conducting the experiments, the results provided that both varied factors have an effect on the dissolving process, and are in a balanced relationship with the dissolving process because when the two factors were increased, the dissolving process improved. During the experiments, it was observed that the loss of contact between the test specimen and the active electrode was the reason for the failure of the dissolution process. In addition, the release process is directly influenced by the driving speed. In order to improve the release process, ideas were put forward at the end of this work to ensure a safe contact between the test specimen and the active electrode throughout the test and to determine the appropriate driving speed.