Preparation and piezoresistive properties of carbon fiber-reinforced alkali-activated fly ash/slag mortar
Article
Article Title | Preparation and piezoresistive properties of carbon fiber-reinforced alkali-activated fly ash/slag mortar |
---|---|
ERA Journal ID | 3470 |
Article Category | Article |
Authors | Deng, L. (Author), Ma, Y. (Author), Hu, J. (Author), Yin, S. (Author), Ouyang, X. (Author), Fu, J. (Author), Liu, A. (Author) and Zhang, Z. (Author) |
Journal Title | Construction and Building Materials |
Journal Citation | 222, pp. 738-749 |
Number of Pages | 12 |
Year | 2019 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 0950-0618 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.conbuildmat.2019.06.134 |
Abstract | In this study, a novel type of conductive mortar was proposed and prepared by alkali-activated fly ash/slag (AAFS) combined with carbon fibers. The workability, mechanical properties, electrical resistivity and piezoresistive properties of carbon fiber-reinforced AAFS (CF-AAFS) mortar were investigated and compared with carbon fiber-reinforced cement mortar (CF-CM). It was found that CF-AAFS exhibited much better workability and significantly higher compressive strength (>66 MPa at 28 days) than CF-CM with the same carbon fiber content. With 0.2 vol% carbon fibers, the electrical resistivity of CF-AAFS mortar decreased from 3313 Ω·cm to 165 Ω·cm at 28 days, reaching the percolation threshold. AAFS mortar with only 0.1 vol% carbon fiber content exhibited good piezoresistivity under both monotonic and cyclic compression. Therefore, CF-AAFS was regarded as a promising material in the use of self-sensing structure in construction. |
Keywords | carbon fibers, alkali-activated fly ash/slag, electrical resistivity, piezoresistivity, self-sensing materials |
ANZSRC Field of Research 2020 | 400505. Construction materials |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Guangzhou University, China |
Centre for Future Materials | |
South China University of Technology, China | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q5932/preparation-and-piezoresistive-properties-of-carbon-fiber-reinforced-alkali-activated-fly-ash-slag-mortar
144
total views8
total downloads1
views this month0
downloads this month