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Investigating the relationship between suction in cement paste and specific concrete properties
Dissertation (MEng (Structural Engineering))--University of Pretoria, 2020.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2021
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| _version_ | 1867613541928796160 |
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| access_status_str | Open Access |
| author2 | Kearsley, Elsabe P. |
| author_browse | Kearsley, Elsabe P. |
| author_facet | Kearsley, Elsabe P. |
| collection | Thesis |
| dc_rights_str_mv | © 2019 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 (MEng (Structural Engineering))--University of Pretoria, 2020. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/78228 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:37:47.729Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| 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:2263/78228 Investigating the relationship between suction in cement paste and specific concrete properties Kearsley, Elsabe P. u15001335@tuks.co.za Schoeman, Mariesa suction drying shrinkage mechanical properties cement paste concrete properties porosity UCTD Engineering, built environment and information technology theses SDG-09 SDG-09: Industry, innovation and infrastructure Engineering, built environment and information technology theses SDG-11 SDG-11: Sustainable cities and communities Engineering, built environment and information technology theses SDG-12 SDG-12: Responsible consumption and production Dissertation (MEng (Structural Engineering))--University of Pretoria, 2020. The Soil Water Retention Curve (SWRC) of different soils has been researched thoroughly by multiple Geotechnical Engineers. The interpretation of the SWRC for a specific soil leads to the identification of certain properties of the soil. The SWRC typically involves a plot of suction measurements (on a logarithmic scale) against the volumetric water content or degree of saturation of the soil. This project aims to determine a manner in which concrete properties (such as durability, porosity, shrinkage, strength and stiffness) can be estimated through suction measurements. The Dew Point PotentiaMeter (WP4C) apparatus was used to measure the suctions of different concrete mixtures, as well as to derive the water retention curve of concrete. A cement paste study was first conducted to determine whether this apparatus is able to deliver representative results, which it is. It was discovered that the water retention curve of concrete is similar to a bimodal SWRC identified by Geotechnical Engineers. Thereafter, a mortar study was completed to determine if the water retention curves can be used to estimate different concrete properties. Three different porosity tests were investigated during this research study, namely the X-ray test, the Mercury Intrusion Porosimetry (MIP) test and a simple test method described in the durability index testing procedure manual assembled by University of Cape Town, University of the Witwatersrand and CoMSIRU. It was concluded that the MIP test and the simple test method described in the durability index testing procedure manual gave the most comparable results with regards to literature. The shrinkage of the concrete mixture was investigated to determine a relationship between the suctions and the shrinkage of the concrete. Different strength tests of all the concrete mixtures were also investigated, namely the flexural test, the compressive test, the splitting cylinder test and the E-value test (stiffness). It was concluded that there was a definite trend between the suction measurements and the specific concrete properties tested. The water retention curve has the potential to describe various properties of different concrete mixtures. Civil Engineering MEng (Structural Engineering) Unrestricted 2021-02-03T12:39:58Z 2021-02-03T12:39:58Z 2020 2020 Dissertation * http://hdl.handle.net/2263/78228 en © 2019 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 | suction drying shrinkage mechanical properties cement paste concrete properties porosity UCTD Engineering, built environment and information technology theses SDG-09 SDG-09: Industry, innovation and infrastructure Engineering, built environment and information technology theses SDG-11 SDG-11: Sustainable cities and communities Engineering, built environment and information technology theses SDG-12 SDG-12: Responsible consumption and production Investigating the relationship between suction in cement paste and specific concrete properties |
| title | Investigating the relationship between suction in cement paste and specific concrete properties |
| title_full | Investigating the relationship between suction in cement paste and specific concrete properties |
| title_fullStr | Investigating the relationship between suction in cement paste and specific concrete properties |
| title_full_unstemmed | Investigating the relationship between suction in cement paste and specific concrete properties |
| title_short | Investigating the relationship between suction in cement paste and specific concrete properties |
| title_sort | investigating the relationship between suction in cement paste and specific concrete properties |
| topic | suction drying shrinkage mechanical properties cement paste concrete properties porosity UCTD Engineering, built environment and information technology theses SDG-09 SDG-09: Industry, innovation and infrastructure Engineering, built environment and information technology theses SDG-11 SDG-11: Sustainable cities and communities Engineering, built environment and information technology theses SDG-12 SDG-12: Responsible consumption and production |
| url | http://hdl.handle.net/2263/78228 |