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Composition design and microstructural characterization of calcined kaolin-based geopolymer cement
Yunsheng Z.2; Wei S.2; Zongjin L.1
2010-02-01
Source PublicationApplied Clay Science
ISSN01691317
Volume47Issue:3-4Pages:271-275
AbstractA three key parameters (SiO/AlO, MO/AlO and HO/MO, M denotes Na or K) composition design method was firstly proposed based on chemical characteristics analysis of calcined kaolin-based geopolymer cement. A total of 9 Na-poly-sialate-disiloxo (Na-PSDS) geopolymer cement pastes with different mole ratio of SiO/AlO, NaO/AlO, HO/NaO were designated to investigate the influence of the three key ratios on mechanical properties and microstructure in accordance with orthogonal design. The results showed that the ratios NaO/AlO and HO/NaO had significant effect on compressive strength. The highest compressive strength (34.9 MPa) was achieved at SiO/AlO = 5.5, NaO/AlO = 1.0 and HO/NaO = 7.0. Comparing the IR spectra of the 9 pastes also indicated that cement with the highest strength was the most fully reacted one and possessed the largest amount of geopolymers. The microscopic analysis revealed that the fully reacted Na-PSDS cement possessed structural characteristics similar to gel substances in having a wide range of Si endowments, but the framework of SiO tetrahedra partially replaced by 4-coordinated Al. © 2009 Elsevier B.V. All rights reserved.
KeywordCalcined kaolin Composition design Geopolymer cement
DOI10.1016/j.clay.2009.11.002
URLView the original
Language英語
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Cited Times [WOS]:118   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Hong Kong University of Science and Technology
2.Southeast University
Recommended Citation
GB/T 7714
Yunsheng Z.,Wei S.,Zongjin L.. Composition design and microstructural characterization of calcined kaolin-based geopolymer cement[J]. Applied Clay Science,2010,47(3-4):271-275.
APA Yunsheng Z.,Wei S.,&Zongjin L..(2010).Composition design and microstructural characterization of calcined kaolin-based geopolymer cement.Applied Clay Science,47(3-4),271-275.
MLA Yunsheng Z.,et al."Composition design and microstructural characterization of calcined kaolin-based geopolymer cement".Applied Clay Science 47.3-4(2010):271-275.
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