Experimental Investigation on Compressive Strength Enhancement of Geopolymer Paste Fly Ash/ Slag Based Cured at Ambient Condition
In this paper, the effects of ground granulated blast furnace slag (GGBFS) content proportion on the development of compressive strength of geopolymer pastes were studied. Eleven geopolymer pastes mixes replacement (0% to 100%) by increment (10%) of binder(Fly Ash) by GGBFS with three mini-size spe...
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| Format: | Article |
| Language: | English |
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University of Diyala
2020-06-01
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| Series: | Diyala Journal of Engineering Sciences |
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| Online Access: | https://djes.info/index.php/djes/article/view/14 |
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| author | Wrood H. Sachet Wissam D. Salman Safie Mahdi Oleiwi Dia Eddin Nassani |
| author_facet | Wrood H. Sachet Wissam D. Salman Safie Mahdi Oleiwi Dia Eddin Nassani |
| author_sort | Wrood H. Sachet |
| collection | DOAJ |
| description |
In this paper, the effects of ground granulated blast furnace slag (GGBFS) content proportion on the development of compressive strength of geopolymer pastes were studied. Eleven geopolymer pastes mixes replacement (0% to 100%) by increment (10%) of binder(Fly Ash) by GGBFS with three mini-size specimens (50-mm cube) compression tests were conducted at ambient condition (30 ± 2 °C). Class F-fly ash (FA) and GGBFS were used as aluminosilicate source. The alkaline activator was a combine of sodium silicate (SS) solution and sodium hydroxide (SH) solution with (SS/SH) ratio of (2.0) and molarity of sodium hydroxide of (10M). Based on the test results, it was find that the addition of ground granulated blast furnace slag (GGBFS) to geopolymer paste based fly ash caused increase significantly of compressive strength when cured at ambient condition, and the optimum mix was found to have GGBFS content of 100%, can be improved the compressive strength as high as (74% and 62%) at 7 and 28 days respectively. The reason for this trend is that the increasing forming of calcium silicate hydrate C-S-H gel of geopolymer pastes containing a large amount of GGBFS caused more denser microstructure. Lastly, it is worth noting that this test methodology used in this study is for the purpose of determining the best ratio of slag replacement with fly ash in geopolymer paste, to give the highest improvement ratio in compressive strength compared with the reference (Fly Ash based geopolymer paste)
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| first_indexed | 2024-04-11T21:10:56Z |
| format | Article |
| id | doaj.art-2f4187e5bd3348aab7b224ecb3f17822 |
| institution | Directory Open Access Journal |
| issn | 1999-8716 2616-6909 |
| language | English |
| last_indexed | 2024-04-11T21:10:56Z |
| publishDate | 2020-06-01 |
| publisher | University of Diyala |
| record_format | Article |
| series | Diyala Journal of Engineering Sciences |
| spelling | doaj.art-2f4187e5bd3348aab7b224ecb3f178222022-12-22T04:03:01ZengUniversity of DiyalaDiyala Journal of Engineering Sciences1999-87162616-69092020-06-0113210.24237/djes.2020.13211Experimental Investigation on Compressive Strength Enhancement of Geopolymer Paste Fly Ash/ Slag Based Cured at Ambient ConditionWrood H. Sachet 0Wissam D. Salman1Safie Mahdi Oleiwi2Dia Eddin Nassani 3Department of Civil Engineering, College of Engineering, University of DiyalaDepartment of Civil Engineering, College of Engineering, University of DiyalaDepartment of Civil Engineering, College of Engineering, University of DiyalaDepartment of Civil Engineering, Hasan Kalyoncu University, Gaziantep, Turkey In this paper, the effects of ground granulated blast furnace slag (GGBFS) content proportion on the development of compressive strength of geopolymer pastes were studied. Eleven geopolymer pastes mixes replacement (0% to 100%) by increment (10%) of binder(Fly Ash) by GGBFS with three mini-size specimens (50-mm cube) compression tests were conducted at ambient condition (30 ± 2 °C). Class F-fly ash (FA) and GGBFS were used as aluminosilicate source. The alkaline activator was a combine of sodium silicate (SS) solution and sodium hydroxide (SH) solution with (SS/SH) ratio of (2.0) and molarity of sodium hydroxide of (10M). Based on the test results, it was find that the addition of ground granulated blast furnace slag (GGBFS) to geopolymer paste based fly ash caused increase significantly of compressive strength when cured at ambient condition, and the optimum mix was found to have GGBFS content of 100%, can be improved the compressive strength as high as (74% and 62%) at 7 and 28 days respectively. The reason for this trend is that the increasing forming of calcium silicate hydrate C-S-H gel of geopolymer pastes containing a large amount of GGBFS caused more denser microstructure. Lastly, it is worth noting that this test methodology used in this study is for the purpose of determining the best ratio of slag replacement with fly ash in geopolymer paste, to give the highest improvement ratio in compressive strength compared with the reference (Fly Ash based geopolymer paste) https://djes.info/index.php/djes/article/view/14fly ashslaggeopolymer pastecompressive strength and ambient curing |
| spellingShingle | Wrood H. Sachet Wissam D. Salman Safie Mahdi Oleiwi Dia Eddin Nassani Experimental Investigation on Compressive Strength Enhancement of Geopolymer Paste Fly Ash/ Slag Based Cured at Ambient Condition Diyala Journal of Engineering Sciences fly ash slag geopolymer paste compressive strength and ambient curing |
| title | Experimental Investigation on Compressive Strength Enhancement of Geopolymer Paste Fly Ash/ Slag Based Cured at Ambient Condition |
| title_full | Experimental Investigation on Compressive Strength Enhancement of Geopolymer Paste Fly Ash/ Slag Based Cured at Ambient Condition |
| title_fullStr | Experimental Investigation on Compressive Strength Enhancement of Geopolymer Paste Fly Ash/ Slag Based Cured at Ambient Condition |
| title_full_unstemmed | Experimental Investigation on Compressive Strength Enhancement of Geopolymer Paste Fly Ash/ Slag Based Cured at Ambient Condition |
| title_short | Experimental Investigation on Compressive Strength Enhancement of Geopolymer Paste Fly Ash/ Slag Based Cured at Ambient Condition |
| title_sort | experimental investigation on compressive strength enhancement of geopolymer paste fly ash slag based cured at ambient condition |
| topic | fly ash slag geopolymer paste compressive strength and ambient curing |
| url | https://djes.info/index.php/djes/article/view/14 |
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