Preparation and mechanical properties of polypropylene fiber reinforced calcined kaolin-fly ash based geopolymer
Article
Article Title | Preparation and mechanical properties of polypropylene fiber reinforced calcined kaolin-fly ash based geopolymer |
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ERA Journal ID | 4089 |
Article Category | Article |
Authors | Zhang, Zuhua (Author), Yao, Xiao (Author), Zhu, Huajun (Author), Hua, Sudong (Author) and Chen, Yue (Author) |
Journal Title | Journal of Central South University |
Journal of Central South University (Zhongnan Daxue Xuebao) | |
Journal Citation | 16 (1), pp. 49-52 |
Number of Pages | 4 |
Year | 2009 |
Place of Publication | Changsha, China |
ISSN | 1005-9784 |
1672-7207 | |
1993-0666 | |
2095-2899 | |
2227-5223 | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s11771-009-0008-4 |
Web Address (URL) | http://link.springer.com/article/10.1007%2Fs11771-009-0008-4 |
Abstract | To improve the environmental benefits and solve the problems of large shrinkage and high brittleness, the partial replacement of calcined kaolin by fly ash as a raw material for geopolymer synthesis and the influences of polypropylene (PP) fiber on the mechanical properties and volume stability were investigated. The results show that compressive strength of the geopolymer containing 33.3% (mass fraction) fly ash by steam curing at 80°C for 6d is improved by 35.5%. The 3-day compressive strength, flexural strength and impacting energy of geopolymers containing 0.05%PP fiber increase by 67.8%, 36.1% and 6.25%, while the shrinkage and modulus of compressibility decrease by 38.6% and 31.3%, respectively. The results of scanning electron microscopy (SEM) and the appearances of crack growths confirm that PP fiber can offer a bridging effect over the harmful pores and defects and change the expanding ways of cracks, resulting in a great improvement of strength and toughness. |
Keywords | calcined kaolin; fly ash; geopolymer; mechanical properties; polypropylene fiber; preparation |
ANZSRC Field of Research 2020 | 340306. Polymerisation mechanisms |
340204. Inorganic green chemistry | |
401706. Numerical modelling and mechanical characterisation | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Nanjing University of Technology, China |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q2876/preparation-and-mechanical-properties-of-polypropylene-fiber-reinforced-calcined-kaolin-fly-ash-based-geopolymer
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