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The development of a rapid chloride test for concrete and its use in engineering practice
The test is of low cost, has a sound theoretical basis, and as far as can be ascertained, is the most rapid of all chloride tests developed to date. Due to the short test duration, it is possible to test concretes cured for very short periods. Samples can also be left immersed in chloride solution a...
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| Format: | Thesis |
| Language: | English |
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Department of Civil Engineering
2016
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| _version_ | 1867613903548055552 |
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| access_status_str | Open Access |
| author | Streicher, Pieter Emilius |
| author2 | Alexander, Mark Gavin |
| author_browse | Alexander, Mark Gavin Streicher, Pieter Emilius |
| author_facet | Alexander, Mark Gavin Streicher, Pieter Emilius |
| author_sort | Streicher, Pieter Emilius |
| collection | Thesis |
| description | The test is of low cost, has a sound theoretical basis, and as far as can be ascertained, is the most rapid of all chloride tests developed to date. Due to the short test duration, it is possible to test concretes cured for very short periods. Samples can also be left immersed in chloride solution and re-tested at later ages to study time-dependent phenomena such as chloride binding. The chloride conductivity test involves the standardisation of the concrete pore solution by vacuum-saturating a concrete sample with a 5 M NaCl solution. A single conductivity measurement of the sample is then performed. Different concrete samples yield different conductivities primarily because of differences in their pore and micro-structure. The measured conductivity is related to the diffusibility ratio as well as to the theoretical steady state chloride diffusivity of concrete. Trial tests were performed to determine the optimum conditions for the test (sample conditioning. test procedure) and to verify the test relationships. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/21765 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:43:32.777Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Department of Civil Engineering |
| publisherStr | Department of Civil Engineering |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/21765 The development of a rapid chloride test for concrete and its use in engineering practice Streicher, Pieter Emilius Alexander, Mark Gavin Civil Engineering The test is of low cost, has a sound theoretical basis, and as far as can be ascertained, is the most rapid of all chloride tests developed to date. Due to the short test duration, it is possible to test concretes cured for very short periods. Samples can also be left immersed in chloride solution and re-tested at later ages to study time-dependent phenomena such as chloride binding. The chloride conductivity test involves the standardisation of the concrete pore solution by vacuum-saturating a concrete sample with a 5 M NaCl solution. A single conductivity measurement of the sample is then performed. Different concrete samples yield different conductivities primarily because of differences in their pore and micro-structure. The measured conductivity is related to the diffusibility ratio as well as to the theoretical steady state chloride diffusivity of concrete. Trial tests were performed to determine the optimum conditions for the test (sample conditioning. test procedure) and to verify the test relationships. 2016-09-14T12:57:03Z 2016-09-14T12:57:03Z 1997 Doctoral Thesis Doctoral PhD http://hdl.handle.net/11427/21765 eng application/pdf Department of Civil Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Civil Engineering Streicher, Pieter Emilius The development of a rapid chloride test for concrete and its use in engineering practice |
| thesis_degree_str | Doctoral |
| title | The development of a rapid chloride test for concrete and its use in engineering practice |
| title_full | The development of a rapid chloride test for concrete and its use in engineering practice |
| title_fullStr | The development of a rapid chloride test for concrete and its use in engineering practice |
| title_full_unstemmed | The development of a rapid chloride test for concrete and its use in engineering practice |
| title_short | The development of a rapid chloride test for concrete and its use in engineering practice |
| title_sort | development of a rapid chloride test for concrete and its use in engineering practice |
| topic | Civil Engineering |
| url | http://hdl.handle.net/11427/21765 |
| work_keys_str_mv | AT streicherpieteremilius thedevelopmentofarapidchloridetestforconcreteanditsuseinengineeringpractice AT streicherpieteremilius developmentofarapidchloridetestforconcreteanditsuseinengineeringpractice |