Häuslein, Svetlana

Diploma Thesis:
1825

Topic:
Methods of construction technology to immobilize soil contaminations

Editor:
Svetlana Häuslein

University Professor Responsible:
Univ.-Prof. Dr.-Ing. Peter Jehle

Supervisor:
University Supervisor: Dipl.-Ing. Florian Kopf

Editing Period:
05.03.2021 until 05.11.2021

Abstract:
In this study, it is demonstrated that sensitive use of the contaminated areas after immobilisation of the pollutants does not require freedom from pollutants, but only an interruption of the impact pathways. The focus is on the hazards in the soil-human pathway as a result of the mixed contamination on the surface. Within the framework of the literature study, a decision matrix is designed on the basis of the mechanisms of action of immobilisation, which indicates the immobilisation of certain pollutant groups for sensitive or non-sensitive use. The extension of this matrix is investigated in a case study in which, assuming simplified boundary conditions, the immobilisation procedures for variable dispersion pathways are determined in each case for the cohesive and permeable soil. By evaluating and interpreting the results, it can be demonstrated that in the case of superficial mixed contamination for the soil-human impact pathway, it is possible to achieve the minimum immobilisation objective for subsequent sensitive use on the basis of solidification. However, it is demonstrated that the lack of long-term stability of the solidification products allows them to be classified as partially stabilised and for this reason they do not fulfil the prerequisite for use as RC building materials in technical structures.