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Factors affecting the fire resistance properties of fly ash concrete
While a lot of research has been conducted under on sustainable building materials towards exploring the mechanical and physical properties of fly ash as a recycled material that replaces ordinary portland cement in concrete, little has been directed towards testing its fire resistance properties. D...
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2016
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| _version_ | 1867613409302806528 |
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| access_status_str | Open Access |
| author | Hafez, Hisham Tarek |
| author_browse | Hafez, Hisham Tarek |
| author_facet | Hafez, Hisham Tarek |
| author_sort | Hafez, Hisham Tarek |
| collection | Thesis |
| dc_rights_str_mv | The author retains all rights with regard to copyright. The author certifies that written permission from the owner(s) of third-party copyrighted matter included in the thesis, dissertation, paper, or record of study has been obtained. The author further certifies that IRB approval has been obtained for this thesis, or that IRB approval is not necessary for this thesis. Insofar as this thesis, dissertation, paper, or record of study is an educational record as defined in the Family Educational Rights and Privacy Act (FERPA) (20 USC 1232g), the author has granted consent to disclosure of it to anyone who requests a copy. |
| description | While a lot of research has been conducted under on sustainable building materials towards exploring the mechanical and physical properties of fly ash as a recycled material that replaces ordinary portland cement in concrete, little has been directed towards testing its fire resistance properties. Due to the growing need to use fly ash based concrete and the severity of fire, the third most reason for casualties in building inhabitants, this research is directed into exploring the fire resistance properties of fly ash based concrete. After conducting the literature review, the following hypothesis was formulated: not only does fly ash affect the behavior of the concrete, but also other test variables like the oven temperature, the curing period and several others. Therefore, an experimental program was formulated based on the literature findings in order to validate this hypothesis. Four hundred and eighty specimens were prepared to see whether the change in fly ash percentage, oven temperature, coarse aggregate size, curing time, curing method and steel reinforcement affects the fire resistance of concrete. Within the limitations of the experimental testing program, the following main findings can be stated; a) Concrete fire resistance property could be measured by a strength reduction index (Beta) that measures the decrease in compressive strength before and after being exposed to elevated temperatures, b) 30% FA samples has 20-25% higher Beta values than OPC Concrete in the early curing days (3 and 7), c) 30% FA samples has 10% higher Beta values on average in all tested oven temperatures, and d) concrete cured manually has higher Beta values than the ones in the curing room at 200 and 800 degrees. |
| format | Thesis |
| id | oai:fount.aucegypt.edu:etds-1267 |
| institution | American University in Cairo (Egypt) |
| last_indexed | 2026-06-10T12:35:41.195Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from AUC Knowledge Fountain — bepress |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | AUC Knowledge Fountain |
| publisherStr | AUC Knowledge Fountain |
| record_format | dspace |
| source_str | AUC Knowledge Fountain — bepress |
| spelling | oai:fount.aucegypt.edu:etds-1267 Factors affecting the fire resistance properties of fly ash concrete Hafez, Hisham Tarek While a lot of research has been conducted under on sustainable building materials towards exploring the mechanical and physical properties of fly ash as a recycled material that replaces ordinary portland cement in concrete, little has been directed towards testing its fire resistance properties. Due to the growing need to use fly ash based concrete and the severity of fire, the third most reason for casualties in building inhabitants, this research is directed into exploring the fire resistance properties of fly ash based concrete. After conducting the literature review, the following hypothesis was formulated: not only does fly ash affect the behavior of the concrete, but also other test variables like the oven temperature, the curing period and several others. Therefore, an experimental program was formulated based on the literature findings in order to validate this hypothesis. Four hundred and eighty specimens were prepared to see whether the change in fly ash percentage, oven temperature, coarse aggregate size, curing time, curing method and steel reinforcement affects the fire resistance of concrete. Within the limitations of the experimental testing program, the following main findings can be stated; a) Concrete fire resistance property could be measured by a strength reduction index (Beta) that measures the decrease in compressive strength before and after being exposed to elevated temperatures, b) 30% FA samples has 20-25% higher Beta values than OPC Concrete in the early curing days (3 and 7), c) 30% FA samples has 10% higher Beta values on average in all tested oven temperatures, and d) concrete cured manually has higher Beta values than the ones in the curing room at 200 and 800 degrees. 2016-06-01T07:00:00Z thesis application/pdf https://fount.aucegypt.edu/etds/268 https://fount.aucegypt.edu/context/etds/article/1267/viewcontent/hisham_20hafez_20fly_20ash_20dessertation_20final_20draft.pdf The author retains all rights with regard to copyright. The author certifies that written permission from the owner(s) of third-party copyrighted matter included in the thesis, dissertation, paper, or record of study has been obtained. The author further certifies that IRB approval has been obtained for this thesis, or that IRB approval is not necessary for this thesis. Insofar as this thesis, dissertation, paper, or record of study is an educational record as defined in the Family Educational Rights and Privacy Act (FERPA) (20 USC 1232g), the author has granted consent to disclosure of it to anyone who requests a copy. Theses and Dissertations AUC Knowledge Fountain Concrete Fly ash |
| spellingShingle | Concrete Fly ash Hafez, Hisham Tarek Factors affecting the fire resistance properties of fly ash concrete |
| title | Factors affecting the fire resistance properties of fly ash concrete |
| title_full | Factors affecting the fire resistance properties of fly ash concrete |
| title_fullStr | Factors affecting the fire resistance properties of fly ash concrete |
| title_full_unstemmed | Factors affecting the fire resistance properties of fly ash concrete |
| title_short | Factors affecting the fire resistance properties of fly ash concrete |
| title_sort | factors affecting the fire resistance properties of fly ash concrete |
| topic | Concrete Fly ash |
| url | https://fount.aucegypt.edu/etds/268 https://fount.aucegypt.edu/context/etds/article/1267/viewcontent/hisham_20hafez_20fly_20ash_20dessertation_20final_20draft.pdf |
| work_keys_str_mv | AT hafezhishamtarek factorsaffectingthefireresistancepropertiesofflyashconcrete |