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This paper presents an experimental investigation on the mechanical properties and microstructure of geopolymer repair materials mixed using fly ash (FA) and concrete substrates. An optimal combination of FA and concrete substrate was determined using the compressive test of geopolymer mortar mixed with various concrete substrate classes. It was found that the contribution of (C35/45) concrete substrates with the FA geopolymer mortar increases the 28-day bonding strength by 25.74 MPa. The microstructure analysis of the samples using scanning electron microscopy showed the denser structure owing to the availability of high calcium and iron elements distribution. These metal cations (Ca2+ and Fe3+) are available at OPC concrete substrate as a result from the hydration process reacted with alumina-silica sources of FA and formed calcium aluminate silicate hydrate (C-A-S-H) gels and Fe-bonding linkages.
Wydawca
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Rocznik
Tom
Strony
1277--1281
Opis fizyczny
Bibliogr. 11 poz., fot., rys., tab.
Twórcy
- Universiti Malaysia Perlis (UniMAP), Centre of Excellence Geopolymer and Green Technology (CEGeoGTech), Perlis, Malaysia
- Universiti Malaysia Perlis (UniMAP), Faculty of Chemical Engineering Technology, Perlis, Malaysia
autor
- Universiti Malaysia Perlis (UniMAP), Centre of Excellence Geopolymer and Green Technology (CEGeoGTech), Perlis, Malaysia
- Universiti Teknologi Mara (UiTM), Faculty of Civil Engineering, Shah Alam, Selangor, Malaysia
- Universiti Malaysia Perlis (UniMAP), Centre of Excellence Geopolymer and Green Technology (CEGeoGTech), Perlis, Malaysia
autor
- Universiti Malaysia Perlis (UniMAP), Faculty of Chemical Engineering Technology, Perlis, Malaysia
- Universiti Malaysia Perlis (UniMAP), Centre of Excellence Geopolymer and Green Technology (CEGeoGTech), Perlis, Malaysia
autor
- “Gheorghe Asachi” Technical University of Iasi, Faculty of Materials Science and Engineering, Romania
autor
- Universiti Malaysia Perlis (UniMAP), Centre of Excellence Geopolymer and Green Technology (CEGeoGTech), Perlis, Malaysia
Bibliografia
- [1] H. Alanazi, M. Yang, D. Zhang, Z.J. Gao, Cem. Concr. Compos. 65, 75-82 (2016).
- [2] K. Pandurangan, M. Thennavan, A. Muthadhi, Mater. Today-Proc. 5 (5), 12725-12733 (2018).
- [3] I.H. Aziz, M.M.A.B. Abdullah, H.C. Yong, L.Y. Ming, K. Hussin, A.A. Kadir, E.A. Azimi, Manufacturing of fire resistance geopolymer: A review, in: MATEC Web of Conferences 2016, EDP Sciences (2016).
- [4] G.F. Huseien, J. Mirza, M. Ismail, S. Ghoshal, A.A. Hussein, Renew. Sust. Energ. Rev. 80, 54-74 (2017).
- [5] I.H. Aziz, M.M.A.B. Abdullah, C.-Y. Heah, Y.-M. Liew. Adv. Cem. Res. 32 (10), 465-475 (2020).
- [6] M.B.Gundiran, S. Kumar, Constr. Build. Mater. 125, 450-457 (2016).
- [7] T. Phoo-Ngernkham, A. Maegawa, N. Mishima, S. Hatanaka, P. Chindaprasirt, Constr. Build. Mater. 91, 1-8 (2015).
- [8] F. Pacheco-Torgal, J. Castro-Gomes, S. Jalali, Constr. Build. Mater. 22 (3), 154-161 (2008).
- [9] S.-Y.Guo, X. Zhang, J.-Z. Chen, B. Mou, H.-S. Shang, P. Wang, L. Zhang, J. Ren, Constr. Build. Mater. 264, 120715 (2020).
- [10] F. Moghaddam, V. Sirivivatnanon, K. Vessalas, Case Studies in Construction Materials 10, e00218 (2019).
- [11] T. Phoo-ngernkham, C. Phiangphimai, D. Intarabut, S. Hanjitsuwan, N. Damrongwiriyanupap, L.-Y. Li, P. Chindaprasirt, Constr. Build. Mater. 247, 118543 (2020).
Uwagi
1. The authors thank the Centre of Excellent Geopolymer and Green Technology (CeGeoGTech), UniMAP, for its financial support. The authors would also like to thank the European Union (EU) for the “Partnership for Research in Geopolymer Concrete” (PRI-GeoC-689857) grant. Special thanks also go to the Thailand National Metal and Materials Technology Center (MTEC) for testing some of the samples.
2. Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).
Typ dokumentu
Bibliografia
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