Ruffer, Lucas

Diploma Thesis:
1959

Topic:
Experimental investigation of thin-walled carbon concrete components

Editor:
Lucas Ruffer

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

Supervisor:
University Supervisor: Dipl.-Ing. Veit Klopfer

Editing Period:
08.06.2023 until 12.10.2023

Abstract:
In this paper, a recommended course of action for the subsequent processing of thin-walled carbon concrete components was created within the framework of the Rubin-ISC research project. The focus is on the execution times and possible necessary expenses for quality assurance. During the investigations, carbon concrete components with different types of reinforcement were sampled, as well as reinforced concrete components to obtain reference values. The basis for the selection of the methods was DIN 18007:2022-09 "Demolition work - Definitions, methods, areas of application". From this, the methods of chiselling, grinding, core drilling, solid drilling and sawing were used. In addition, the slotting method was used. Through the evaluation of the measured values and measured variables, it can be proven that carbon concrete is more positive in many respects during processing than reinforced concrete. The execution times are significantly reduced, especially for slotting and sawing. It is also easier to work and penetrate the reinforcement when grinding and drilling. However, there are also disadvantages compared to reinforced concrete. In solid drilling, spalling always occurs on the exit side of the drill head. The areas of these are significantly smaller in reinforced concrete than in carbon concrete. Therefore, the effort for subsequent smoothing and filling of the areas is greater in the case of carbon reinforced components. Although caulking work on carbon concrete components is more positive in that the reinforcement can be cut through by the chisel and no extra equipment is required for this, it delaminates and the effort required to separate the fragments increases.