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Gewählte Master / Diploma Thesis:

Christina Henöckl (2021): Nachhaltige Verwendung von Bodenaushubmaterial als Pflanzsubstrat: Untersuchung und Bewertung von Substraten nach dem Circular Soil-Konzept im Projekt „Wildgarten“.
Master / Diploma Thesis - Institut für Ingenieurbiologie und Landschaftsbau (IBLB), BOKU-Universität für Bodenkultur, pp 227. UB BOKU obvsg

Data Source: ZID Abstracts
The increasing amount of waste accumulation, a growing population and a rising need of living space are in constant conflict in times of climate change. The wasteful use of essential resources suggests the opportunity to revolutionise the circular economy of soil excavation material in the building sector. A new approach called “Circular Soil”, focuses on reprocessing soil excavation material for use as vegetation substrate. The aim of this work is to test the appropriateness of the created substrate compared to standardized substrate. It was further tested whether substrates made of soil excavated material comply with standards for healthy plant growth. Based on the soil excavation material of the Viennese residential building project “Wildgarten”, two different types of substrates, (1) a hard-wearing turf layer structure and (2) an intensive green roof layer construction, were developed. From both types, a top-base and a sub-base layer were investigated. The verification of the substrates, with regard of pedological and plant growth parameters, was performed in an outdoor test and in the laboratory. Standardized and certified commercial substrates were used as reference for comparing results. The data evaluation of the plant growth parameters showed that the established substrates enable healthy plant growth which is equal to the reference substrate. With regard to the soil parameters, this work came to the conclusion that although there are differences between the created and the standardized substrate for individual parameters, these are proportionately small. By adjusting the aggregates, individual soil parameters can be improved. Thereby, substrate made of excavated material generally complies with the normative requirements. The newly established vegetation substrates are recommended for use as hard-wearing turf types and for intensive roof greening and are assessed equivalent to the reference substrate.

Beurteilende*r: Stangl Rosemarie
1.Mitwirkender: Minixhofer Pia

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