Formulation and characterization of cleaner one-part novel fly ash/lime-based alkali-activated material
With the advanced development in sustainable cementitious materials, cleaner one-part alkali-activated materials (AAM) have shown a significant effect on increasing compressive strength and reduction in CO2 emissions. This study is aimed to prepare one-part AAM based on fly ash (FA) and hydrated lim...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-03-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423002582 |
| _version_ | 1797858761009790976 |
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| author | Sohaib Nazar Jian Yang Muhammad Ashraf Fahid Aslam Muhammad Faisal Javed Sayed M. Eldin Jianhe Xie |
| author_facet | Sohaib Nazar Jian Yang Muhammad Ashraf Fahid Aslam Muhammad Faisal Javed Sayed M. Eldin Jianhe Xie |
| author_sort | Sohaib Nazar |
| collection | DOAJ |
| description | With the advanced development in sustainable cementitious materials, cleaner one-part alkali-activated materials (AAM) have shown a significant effect on increasing compressive strength and reduction in CO2 emissions. This study is aimed to prepare one-part AAM based on fly ash (FA) and hydrated lime (LM) as main precursors. The impact of LM content as replacement of FA and activator dosage was evaluated on fresh and hardened properties of one-part FA/LM-based alkali-activated mortar. Fresh characteristics of AAM were evaluated through workability (setting time, flow table) and rheology, while hardened properties were evaluated by compressive strength, flexural strength, water absorption, durability test, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) tests. The test results revealed that the addition of FA/LM-based AAM increases the reactivity leading to earlier hardening of AAM. FA/LM-based AAM has shown higher compressive strength of 41.5 MPa. The rheology parameters show the increment in yield stress and plastic viscosity by increasing the lime content in the AAM. The activator dosage of sodium hydroxide increases the setting time and durability of AAM. The enhancement in strength and rheological parameters can be assigned to the enhanced geopolymerization reactions, leading to the formation of denser and compacted gels. |
| first_indexed | 2024-04-09T21:19:40Z |
| format | Article |
| id | doaj.art-97e4c54317624ddeb2f21c92466dc567 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-09T21:19:40Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-97e4c54317624ddeb2f21c92466dc5672023-03-28T06:47:36ZengElsevierJournal of Materials Research and Technology2238-78542023-03-012338213839Formulation and characterization of cleaner one-part novel fly ash/lime-based alkali-activated materialSohaib Nazar0Jian Yang1Muhammad Ashraf2Fahid Aslam3Muhammad Faisal Javed4Sayed M. Eldin5Jianhe Xie6State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Shanghai Key Laboratory for Digital Maintenance of Buildings and Infrastructure, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; Department of Civil Engineering, Comsats University Islamabad-Abbottabad Campus, PakistanState Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Shanghai Key Laboratory for Digital Maintenance of Buildings and Infrastructure, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; School of Civil Engineering, University of Birmingham, Birmingham B15 2TT, UK; Corresponding author.Department of Civil Engineering, Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi, PakistanDepartment of Civil Engineering, College of Engineering in Al-Kharj, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi ArabiaDepartment of Civil Engineering, Comsats University Islamabad-Abbottabad Campus, PakistanCenter of Research, Faculty of Engineering, Future University, New Cairo 11835, EgyptSchool of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, Guangdong, ChinaWith the advanced development in sustainable cementitious materials, cleaner one-part alkali-activated materials (AAM) have shown a significant effect on increasing compressive strength and reduction in CO2 emissions. This study is aimed to prepare one-part AAM based on fly ash (FA) and hydrated lime (LM) as main precursors. The impact of LM content as replacement of FA and activator dosage was evaluated on fresh and hardened properties of one-part FA/LM-based alkali-activated mortar. Fresh characteristics of AAM were evaluated through workability (setting time, flow table) and rheology, while hardened properties were evaluated by compressive strength, flexural strength, water absorption, durability test, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) tests. The test results revealed that the addition of FA/LM-based AAM increases the reactivity leading to earlier hardening of AAM. FA/LM-based AAM has shown higher compressive strength of 41.5 MPa. The rheology parameters show the increment in yield stress and plastic viscosity by increasing the lime content in the AAM. The activator dosage of sodium hydroxide increases the setting time and durability of AAM. The enhancement in strength and rheological parameters can be assigned to the enhanced geopolymerization reactions, leading to the formation of denser and compacted gels.http://www.sciencedirect.com/science/article/pii/S2238785423002582Alkali-activated mortarFly ashHydrated limeRheologyDurabilityMechanical properties |
| spellingShingle | Sohaib Nazar Jian Yang Muhammad Ashraf Fahid Aslam Muhammad Faisal Javed Sayed M. Eldin Jianhe Xie Formulation and characterization of cleaner one-part novel fly ash/lime-based alkali-activated material Journal of Materials Research and Technology Alkali-activated mortar Fly ash Hydrated lime Rheology Durability Mechanical properties |
| title | Formulation and characterization of cleaner one-part novel fly ash/lime-based alkali-activated material |
| title_full | Formulation and characterization of cleaner one-part novel fly ash/lime-based alkali-activated material |
| title_fullStr | Formulation and characterization of cleaner one-part novel fly ash/lime-based alkali-activated material |
| title_full_unstemmed | Formulation and characterization of cleaner one-part novel fly ash/lime-based alkali-activated material |
| title_short | Formulation and characterization of cleaner one-part novel fly ash/lime-based alkali-activated material |
| title_sort | formulation and characterization of cleaner one part novel fly ash lime based alkali activated material |
| topic | Alkali-activated mortar Fly ash Hydrated lime Rheology Durability Mechanical properties |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423002582 |
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