Flores-Johnson Emmanuel A, Company-Rodríguez Brenda A, Koh-Dzul J Francisco, Carrillo Jose G
CONACYT-Unidad de Materiales, Centro de Investigación Científica de Yucatán, Calle 43, No. 130 Col. Chuburná de Hidalgo, Mérida, Yucatán 97205, Mexico.
Unidad de Materiales, Centro de Investigación Científica de Yucatán, Calle 43, No. 130 Col. Chuburná de Hidalgo, Mérida, Yucatán 97205, Mexico.
Materials (Basel). 2020 Jun 3;13(11):2534. doi: 10.3390/ma13112534.
Fiber-reinforced foamed concrete (FRFC) is a lightweight material that has the potential to perform well in seismic applications due to its low density and improved mechanical properties. However, studies focused on the seismic assessment of this material are limited. In this work, U-shaped wall specimens, made of FRFC reinforced with henequen fibers and plain foamed concrete (PFC) with a density of 900 kg/m, were subjected to shaking table tests. PFC and FRFC were characterized using compression and tension tests. FRFC exhibited enhanced mechanical properties, which were attributed to the fibers. The dynamic tests showed that U-shaped walls made of FRFC performed better than those made of PFC. The time period prior to the collapse of the FRFC U-shaped walls was longer than that of the PFC specimens, which was attributed to the enhanced specimen integrity by the fibers. Finite element simulations of the shaking table test allowed for the prediction of the stress concentration and plastic strain that may lead to the failure of the U-shaped wall. These results showed that U-shaped walls made of FRFC have the potential to perform well in seismic applications, however, these results are preliminary and further studies are needed to support the findings of this work.
纤维增强泡沫混凝土（FRFC）是一种轻质材料，由于其低密度和改善的力学性能，在地震应用中具有良好的性能潜力。然而，针对这种材料的地震评估研究有限。在这项工作中，对由剑麻纤维增强的FRFC和密度为900 kg/m³的普通泡沫混凝土（PFC）制成的U形墙试件进行了振动台试验。通过压缩和拉伸试验对PFC和FRFC进行了表征。FRFC表现出增强的力学性能，这归因于纤维。动态试验表明，由FRFC制成的U形墙比由PFC制成的U形墙性能更好。FRFC U形墙倒塌前的时间段比PFC试件的长，这归因于纤维增强了试件的完整性。振动台试验的有限元模拟能够预测可能导致U形墙破坏的应力集中和塑性应变。这些结果表明，由FRFC制成的U形墙在地震应用中具有良好的性能潜力，然而，这些结果是初步的，需要进一步的研究来支持这项工作的发现。
