Early-age tensile strength and calcium hydroxide content of concrete containing low-calcium fly ash
The effects of using fly ash in concrete on the early-age tensile strength and the effectiveness of reactive bond breakers are concerns for applications such as tilt-up panels and lift-slabs, however, experimental data is scarce in literature. Fifteen concrete mixtures with up to 40% low-calcium fly...
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| Format: | Journal Article |
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Institution of Engineers, Australia
2013
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| Online Access: | http://search.informit.com.au/documentSummary;dn=662087923732496;res=IELENG http://hdl.handle.net/20.500.11937/12117 |
| _version_ | 1848747988839563264 |
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| author | Sarker, Prabir |
| author_facet | Sarker, Prabir |
| author_sort | Sarker, Prabir |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The effects of using fly ash in concrete on the early-age tensile strength and the effectiveness of reactive bond breakers are concerns for applications such as tilt-up panels and lift-slabs, however, experimental data is scarce in literature. Fifteen concrete mixtures with up to 40% low-calcium fly ash were tested. The early-age tensile strength of fly ash concrete was found to correlate well with compressive strength. The calcium hydroxide (CH) content on concrete surface was found to vary in a wide range because of the varying distribution of aggregates. Generally, the CH content decreased with the increase of fly ash. The CH content increased with age in the control concrete while the change was relatively small for the fly ash concretes up to the age of 7 days. Thus, the reduction of CH content in concrete containing high volume low-calcium fly ash may have significant effect on the performance of bond breakers. |
| first_indexed | 2025-11-14T06:57:54Z |
| format | Journal Article |
| id | curtin-20.500.11937-12117 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:57:54Z |
| publishDate | 2013 |
| publisher | Institution of Engineers, Australia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-121172017-02-28T01:33:48Z Early-age tensile strength and calcium hydroxide content of concrete containing low-calcium fly ash Sarker, Prabir concrete properties early-age strength low-calcium fly ash sustainability tensile strength calcium hydroxide The effects of using fly ash in concrete on the early-age tensile strength and the effectiveness of reactive bond breakers are concerns for applications such as tilt-up panels and lift-slabs, however, experimental data is scarce in literature. Fifteen concrete mixtures with up to 40% low-calcium fly ash were tested. The early-age tensile strength of fly ash concrete was found to correlate well with compressive strength. The calcium hydroxide (CH) content on concrete surface was found to vary in a wide range because of the varying distribution of aggregates. Generally, the CH content decreased with the increase of fly ash. The CH content increased with age in the control concrete while the change was relatively small for the fly ash concretes up to the age of 7 days. Thus, the reduction of CH content in concrete containing high volume low-calcium fly ash may have significant effect on the performance of bond breakers. 2013 Journal Article http://hdl.handle.net/20.500.11937/12117 http://search.informit.com.au/documentSummary;dn=662087923732496;res=IELENG Institution of Engineers, Australia restricted |
| spellingShingle | concrete properties early-age strength low-calcium fly ash sustainability tensile strength calcium hydroxide Sarker, Prabir Early-age tensile strength and calcium hydroxide content of concrete containing low-calcium fly ash |
| title | Early-age tensile strength and calcium hydroxide content of concrete containing low-calcium fly ash |
| title_full | Early-age tensile strength and calcium hydroxide content of concrete containing low-calcium fly ash |
| title_fullStr | Early-age tensile strength and calcium hydroxide content of concrete containing low-calcium fly ash |
| title_full_unstemmed | Early-age tensile strength and calcium hydroxide content of concrete containing low-calcium fly ash |
| title_short | Early-age tensile strength and calcium hydroxide content of concrete containing low-calcium fly ash |
| title_sort | early-age tensile strength and calcium hydroxide content of concrete containing low-calcium fly ash |
| topic | concrete properties early-age strength low-calcium fly ash sustainability tensile strength calcium hydroxide |
| url | http://search.informit.com.au/documentSummary;dn=662087923732496;res=IELENG http://hdl.handle.net/20.500.11937/12117 |