| Autor: |
Deng, Bo-Yu, Li, Ling-Zhi, Yu, Ke-Quan, Uddin, Md Nasir, Yu, Hong-Jun |
| Rok vydání: |
2023 |
| DOI: |
10.6084/m9.figshare.22177880 |
| Popis: |
Lightweight engineered cementitious composite cementitious composite (LWECC) is a special type of cement composite material with superior tensile performance, durability, and low self-weight. However, the fire resistance of LWECC is unknown and there is a lack of research in this aspect. This study aimed to study the residual mechanical property and spalling behaviour of LWECC after exposure to elevated temperature. The novel LWECC reinforced by PE fibres was developed by incorporating high-volume fly ash cenosphere (FAC) as lightweight fine aggregate. A total of 15 mixtures were tested to investigate the effects of silica fume (SF), FAC, polyethylene (PE) and polypropylene (PP) fibre on fire resistance experimentally. The introduction of PP fibres could effectively mitigate explosive spalling, while PE fibres failed to provide the benefit on spalling resistance. The SF and FAC had adverse influences on spalling resistance. The post-fire compressive strength began to decrease drastically when the temperature exceeds 800 °C. The work provides a promising way to develop high-performance LWECC with high fire resistance, which is helpful for fire resistance design of LWECC structures in the future. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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