Influence of different fibers on properties of thermal insulation composites based on geopolymer blended with glazed hollow bead
Article
Article Title | Influence of different fibers on properties of thermal insulation composites based on geopolymer blended with glazed hollow bead |
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ERA Journal ID | 3470 |
Article Category | Article |
Authors | Su, Zhihao, Guo, Liang, Zhang, Zuhua and Duan, Ping |
Journal Title | Construction and Building Materials |
Journal Citation | 203, pp. 525-540 |
Number of Pages | 16 |
Year | 2019 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 0950-0618 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.conbuildmat.2019.01.121 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0950061819301394?via%3Dihub |
Abstract | In this work, fly ash and slag were used as aluminosilicate raw materials to prepare geopolymer paste, and different fibers and glazed hollow beads (GHB) were incorporated into the paste to produce various series of fiber reinforced geopolymer composites. The preparation process of geopolymer composites was explored and the optimum preparation conditions was obtained. Compressive strength, flexural strength, water absorption, porosity, thermal conductivity, linear shrinkage rate, microstructure and morphology have been characterized and assessed. Polypropylene fiber, alkali resistant glass fiber and lignin fibers were added to improve the cracking resistance and to enhance the strength. The results show that the optimal strength of fiber reinforced GHB blended geopolymer is obtained with 15% GHB addition, 0.75% fiber addition and liquid-solid ratio of 1.1. The improving effect of fibers on enhancing and anti-shrinkage follows the following sequence: PP fiber, alkali resistant glass fiber and lignin fiber. It is also observed that the fiber not only prevents the separation of the GHB and geopolymer matrix, but also inhibits the generation and expansion of the cracks, and finally improves the strength regardless of hybrid fibers or single fiber. |
Keywords | Geopolymer, Fiber reinforce, Glazed hollow beads, Polypropylene fiber |
ANZSRC Field of Research 2020 | 400505. Construction materials |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | China University of Geosciences, China |
Hunan University, China | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q5873/influence-of-different-fibers-on-properties-of-thermal-insulation-composites-based-on-geopolymer-blended-with-glazed-hollow-bead
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