Effects of Ultrafine Fly Ash on Setting, Strength, and Porosity of Geopolymers Cured at Room Temperature
This paper presents the effects of ultrafine fly ash on setting, strength and porosity of geopolymer paste specimens cured at 20°C. Addition of ultrafine fly ash reduced setting time and improved compressive strength of geopolymers based on fly ash only or fly ash blended with 15% ground granulated...
| Main Authors: | , |
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| Format: | Journal Article |
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American Society of Civil Engineers (ASCE)
2017
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| Online Access: | http://hdl.handle.net/20.500.11937/17558 |
| _version_ | 1848749497744621568 |
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| author | Deb, Partha Sarathi Sarker, Prabir |
| author_facet | Deb, Partha Sarathi Sarker, Prabir |
| author_sort | Deb, Partha Sarathi |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This paper presents the effects of ultrafine fly ash on setting, strength and porosity of geopolymer paste specimens cured at 20°C. Addition of ultrafine fly ash reduced setting time and improved compressive strength of geopolymers based on fly ash only or fly ash blended with 15% ground granulated blast-furnace slag (GGBFS) or 10% ordinary portland cement (OPC). With the addition of ultrafine fly ash, a reduction in porosity was observed by the mercury intrusion porosimetry (MIP) and a denser microstructure was observed by the scanning electron microscope (SEM) photographs. Thus, for room temperature curing conditions, a control on the setting time and improvements of strength and porosity of geopolymers could be achieved by varying the percentage of ultrafine fly ash. |
| first_indexed | 2025-11-14T07:21:53Z |
| format | Journal Article |
| id | curtin-20.500.11937-17558 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:21:53Z |
| publishDate | 2017 |
| publisher | American Society of Civil Engineers (ASCE) |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-175582017-09-13T15:44:15Z Effects of Ultrafine Fly Ash on Setting, Strength, and Porosity of Geopolymers Cured at Room Temperature Deb, Partha Sarathi Sarker, Prabir This paper presents the effects of ultrafine fly ash on setting, strength and porosity of geopolymer paste specimens cured at 20°C. Addition of ultrafine fly ash reduced setting time and improved compressive strength of geopolymers based on fly ash only or fly ash blended with 15% ground granulated blast-furnace slag (GGBFS) or 10% ordinary portland cement (OPC). With the addition of ultrafine fly ash, a reduction in porosity was observed by the mercury intrusion porosimetry (MIP) and a denser microstructure was observed by the scanning electron microscope (SEM) photographs. Thus, for room temperature curing conditions, a control on the setting time and improvements of strength and porosity of geopolymers could be achieved by varying the percentage of ultrafine fly ash. 2017 Journal Article http://hdl.handle.net/20.500.11937/17558 10.1061/(ASCE)MT.1943-5533.0001745 American Society of Civil Engineers (ASCE) restricted |
| spellingShingle | Deb, Partha Sarathi Sarker, Prabir Effects of Ultrafine Fly Ash on Setting, Strength, and Porosity of Geopolymers Cured at Room Temperature |
| title | Effects of Ultrafine Fly Ash on Setting, Strength, and Porosity of Geopolymers Cured at Room Temperature |
| title_full | Effects of Ultrafine Fly Ash on Setting, Strength, and Porosity of Geopolymers Cured at Room Temperature |
| title_fullStr | Effects of Ultrafine Fly Ash on Setting, Strength, and Porosity of Geopolymers Cured at Room Temperature |
| title_full_unstemmed | Effects of Ultrafine Fly Ash on Setting, Strength, and Porosity of Geopolymers Cured at Room Temperature |
| title_short | Effects of Ultrafine Fly Ash on Setting, Strength, and Porosity of Geopolymers Cured at Room Temperature |
| title_sort | effects of ultrafine fly ash on setting, strength, and porosity of geopolymers cured at room temperature |
| url | http://hdl.handle.net/20.500.11937/17558 |