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Mineralogical impact on the compaction of residual gabbro soils in the construction of Platinum Tailings Storage Facilities
Dissertation (MSc (Engineering Geology))--University of Pretoria, 2023.
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University of Pretoria
2024
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| _version_ | 1867613608919171072 |
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| access_status_str | Open Access |
| author2 | Dippenaar, Matthys Alois |
| author_browse | Dippenaar, Matthys Alois |
| author_facet | Dippenaar, Matthys Alois |
| collection | Thesis |
| dc_rights_str_mv | © 2023 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc (Engineering Geology))--University of Pretoria, 2023. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/96932 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:38:51.633Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/96932 Mineralogical impact on the compaction of residual gabbro soils in the construction of Platinum Tailings Storage Facilities Dippenaar, Matthys Alois jase.tunnell@gmail.com Tunnell, Jason UCTD Sustainable Development Goals (SDGs) Minerology Great Dyke Igneous Bushveld Complex Tailings Mineralogical impact SDG-09: Industry, innovation and infrastructure Natural and agricultural sciences theses SDG-09 Dissertation (MSc (Engineering Geology))--University of Pretoria, 2023. Over the past decade, there have been 45 tailings storage facility (TSF) disasters worldwide, resulting in fatalities, serious environmental damage, and the destruction of entire ecosystems. These failures often stem from substandard design or operational practices. Many TSFs are constructed in regions associated with intrusive mafic rocks such as gabbro, norite, pyroxenite, and anorthosite, which are commonly found alongside platinum group metals in areas like the Bushveld Igneous Complex in South Africa and the Great Dyke in Zimbabwe. The stability of these structures can be significantly influenced by the residual soils present at the construction sites. Residual soils, both cohesive and non-cohesive, contain varying quantities of different minerals, which can impact the compaction characteristics and, consequently, the stability of the TSF foundations. Cohesive soils rich in clay minerals, such as kaolinite and smectite, exhibit properties that can hinder effective soil compaction. The expansive nature of smectite due to its ability to absorb large amounts of water and host free exchangeable cations, counteracts the compaction process, reducing soil stability. Soil compaction is a complex process influenced by several factors, including compaction effort, method, water content, particle size distribution, and mineralogy. This study aimed to analyse these factors using a series of laboratory tests, including foundation indicators, MOD AASHTO compaction testing, and X-ray diffraction analysis, on residual soils from two TSF construction sites. The findings revealed that soils with high clay content tend to retain more water and have a higher optimum water content, adversely affecting their compaction properties. This study highlights the critical need to consider the mineralogical composition and weathering effects of residual soils in the design and construction of TSFs. By improving our understanding of these factors, we can enhance the stability of TSF foundations, reducing the likelihood of future failures. The insights gained from this research highlight the importance of thorough geotechnical assessments in the successful design and maintenance of TSF’s. Geology MSc (Engineering Geology) Unrestricted Faculty of Natural and Agricultural Sciences SDG-09: Industry, innovation and infrastructure 2024-07-11T10:02:32Z 2024-07-11T10:02:32Z 2024-09-01 2023-12-05 Dissertation * S2024 http://hdl.handle.net/2263/96932 10.25403/UPresearchdata.26236304 en © 2023 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD Sustainable Development Goals (SDGs) Minerology Great Dyke Igneous Bushveld Complex Tailings Mineralogical impact SDG-09: Industry, innovation and infrastructure Natural and agricultural sciences theses SDG-09 Mineralogical impact on the compaction of residual gabbro soils in the construction of Platinum Tailings Storage Facilities |
| title | Mineralogical impact on the compaction of residual gabbro soils in the construction of Platinum Tailings Storage Facilities |
| title_full | Mineralogical impact on the compaction of residual gabbro soils in the construction of Platinum Tailings Storage Facilities |
| title_fullStr | Mineralogical impact on the compaction of residual gabbro soils in the construction of Platinum Tailings Storage Facilities |
| title_full_unstemmed | Mineralogical impact on the compaction of residual gabbro soils in the construction of Platinum Tailings Storage Facilities |
| title_short | Mineralogical impact on the compaction of residual gabbro soils in the construction of Platinum Tailings Storage Facilities |
| title_sort | mineralogical impact on the compaction of residual gabbro soils in the construction of platinum tailings storage facilities |
| topic | UCTD Sustainable Development Goals (SDGs) Minerology Great Dyke Igneous Bushveld Complex Tailings Mineralogical impact SDG-09: Industry, innovation and infrastructure Natural and agricultural sciences theses SDG-09 |
| url | http://hdl.handle.net/2263/96932 |