Mahlstedt, Gesa

Diploma Thesis:
1971

Topic:
Safety and health protection during the machining of thin-walled components made of carbon concrete

Editor:
Gesa Mahlstedt

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

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

Editing Period:
02.11.2023 until 04.04.2024

Abstract:
The thesis deals with the evaluation of dust and fibre exposure during the processing of carbon concrete components using various processing methods. By using a specially developed Excel tool and a colour-coded traffic light system, the exposure data from an expert report prepared by Müller-BMM were systematically evaluated. The traffic light system served as a visual aid for classifying the exposure levels during different processing methods in combination with different types of reinforcement and concrete grades. The exposure risks for different types of dust and fibres were analysed, including A-dust, E-dust, quartz dust as well as carbon fibres, other inorganic and organic fibres. The investigation also covered carbon concrete slabs in grades C30/37 and C50/60 in order to be able to assess the influence of concrete strength on the release of dust and fibres. Finally, comprehensive recommendations for health and safety measures were formulated based on the test results. These include basic protective measures such as the use of low-dust techniques and personal protective equipment, extended protective measures with a special focus on dust extraction and control as well as specialised protective measures for particularly dust-intensive activities. The consistent implementation and adaptation of these protective measures is essential in order to minimise exposure to harmful dusts and fibres and thus ensure the safety and health of workers.