ORCID
- Feiyu Shi: 0000-0002-1202-2990
- L-Y Li: 0000-0002-5982-0965
Document Type
Article
Abstract
his paper presents the experimental and numerical investigation on the thermal properties of steel fibre-reinforced alkali-activated concrete (AAC) made by using multiple precursors at elevated temperatures. The temperature-dependent thermal properties such as mass change, thermal conductivity, density, specific heat, and thermal expansion are reported. The effects of temperature heating AAC, coarse aggregate, and steel fibre on the thermal performance of AAC are evaluated quantitatively. Experimental results show that high temperature greatly affects the thermal properties of AAC. Coarse aggregate and steel fibre also have a considerable influence on the thermal properties. Based on the test results, a multi-phase mesoscale model is developed to predict the thermal properties considering volume fractions of steel fibre and coarse aggregate, which can be used in the fire safety design of AAC structures.
DOI Link
Publication Date
2023-09-01
Publication Title
Journal of Building Engineering
Volume
74
Acceptance Date
2023-05-23
Deposit Date
2023-07-11
Embargo Period
2023-11-08
Funding
The authors would like to acknowledge the financial support received from the National Natural Science Foundation of China under grant No. 52078300 and No. 51978406 and the Key R&D Project of Hubei Province of China (Grant NO.2020BAB060). The work is also partially supported by the European Union's Horizon 2020 Marie Skłodowska-Curie Individual Fellowships (H2020-MSCA–IF–2020) under grant No. 101022142 (TemGPC).
Keywords
Alkali-activated concrete, Steel fibre, Elevated temperatures, Thermal properties, Experiment, Modelling
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Recommended Citation
Yu, M., Lin, H., Wang, T., Shi, F., Li, D., Chi, Y., & Li, L. (2023) 'Experimental and numerical investigation on thermal properties of alkali-activated concrete at elevated temperatures', Journal of Building Engineering, 74. Available at: 10.1016/j.jobe.2023.106924
