Experimental study of the mechanical properties of basalt fibre-reinforced concrete at elevated temperatures
Experimental study of the mechanical properties of basalt fibre-reinforced concrete at elevated temperatures
复制标题
玄武岩纤维混凝土高温力学性能试验研究
DOI：
10.1080/19648189.2021.2003253
复制
发表时间：
2021-11-06
影响因子：
2.1
通讯作者：
Doh, Jeung-Hwan
中科院分区：
文献类型：
--
作者：
Lu, Limin;Han, Fei;Doh, Jeung-Hwan
摘要一般认为，玄武岩纤维在混凝土中达到适当的掺量，可以改善混凝土的力学性能，提高混凝土的抗腐蚀能力。虽然玄武岩纤维具有优异的耐高温性能，但玄武岩纤维增强混凝土（BFRC）在高温下的力学性能仍不清楚。除了对普通混凝土和玄武岩纤维混凝土进行基本的抗压和抗拉强度试验外，还对玄武岩纤维与混凝土基体在不同温度下的核心温度、质量损失、力学性能及协同作用机理进行了研究。结果表明，BFRC具有良好的隔热性能，并能减轻混凝土的剥落现象。因此，采用玄武岩纤维可以有效地改善混凝土的高温力学性能。
Abstract Generally, achieving a proper mixing ratio of basalt fibre in concrete can improve the mechanical properties of concrete and enhance its anti-corrosion ability. Although basalt fibre exhibits excellent resistance to high temperatures, the mechanical behaviour of basalt fibre-reinforced concrete (BFRC) exposed to high temperatures is still unclear. In addition to the basic compressive and tensile strength testing for ordinary concrete and BFRC, the core temperature, mass loss, mechanical properties and synergistic mechanism of basalt fibre and concrete matrix under different temperatures were evaluated. The results show that BFRC provides excellent thermal insulation and can mitigate the concrete spalling phenomenon. Therefore, using basalt fibre can effectively improve the mechanical properties of concrete exposed to high temperatures.