A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Tensile behavior of high-performance hybrid steel-basalt fibers reinforced cementitious composites after high-temperature exposure
https://orcid.org/0000-0002-3245-4432
Abstract To solve the problem of tensile properties deterioration and explosive spalling of steel fiber reinforced cementitious composites (ST/FRCC) subjected to high temperature. A high-performance hybrid steel-basalt fibers reinforced cementitious composites (ST-BF/FRCC) is proposed. The mechanical properties of stress-strain curves, cracking stress, peak stress and strain energy of ST-BF/FRCC after high temperature exposure are experimentally investigated and the effects of various fiber volume fraction combination(1 %ST (S1.0B0), 0.5 %ST+0.5 %BF (S0.5B0.5), 1 %ST+1 %BF (S1.0B1.0)) and different temperatures (20 °C, 100 °C, 200 °C, 300 °C, 400 °C, 500 °C) are considered in tensile test. In addition, scanning electron microscopy (SEM) is used to study the microstructure morphology after high temperature exposure. Results show that the addition of basalt fiber significantly increased the cracking stress, ultimate tensile stress and strain energy. The results of scanning electron microscopy (SEM) indicate that the interfacial bond properties between fiber and matrix weakened with the increase of temperature. Furthermore, based on the experiment results, a temperature-dependent constitutive model to predict the tensile stress-strain relationship of ST-BF/FRCC with consideration of fiber hybrid ratio was proposed. This study proves that the steel-basalt hybrid method can improve the tensile properties of ST-BF/FRCC after high temperatures exposure.
Highlights The addition of hybrid steel-basalt fibers significantly increased tensile properties after high-temperature exposure. The tensile properties show a trend of first increasing and then decreasing with the increase of temperature. A reliable tensile constitutive model of ST-BF/FRCC after high-temperature exposure is established.
Tensile behavior of high-performance hybrid steel-basalt fibers reinforced cementitious composites after high-temperature exposure
https://orcid.org/0000-0002-3245-4432
Abstract To solve the problem of tensile properties deterioration and explosive spalling of steel fiber reinforced cementitious composites (ST/FRCC) subjected to high temperature. A high-performance hybrid steel-basalt fibers reinforced cementitious composites (ST-BF/FRCC) is proposed. The mechanical properties of stress-strain curves, cracking stress, peak stress and strain energy of ST-BF/FRCC after high temperature exposure are experimentally investigated and the effects of various fiber volume fraction combination(1 %ST (S1.0B0), 0.5 %ST+0.5 %BF (S0.5B0.5), 1 %ST+1 %BF (S1.0B1.0)) and different temperatures (20 °C, 100 °C, 200 °C, 300 °C, 400 °C, 500 °C) are considered in tensile test. In addition, scanning electron microscopy (SEM) is used to study the microstructure morphology after high temperature exposure. Results show that the addition of basalt fiber significantly increased the cracking stress, ultimate tensile stress and strain energy. The results of scanning electron microscopy (SEM) indicate that the interfacial bond properties between fiber and matrix weakened with the increase of temperature. Furthermore, based on the experiment results, a temperature-dependent constitutive model to predict the tensile stress-strain relationship of ST-BF/FRCC with consideration of fiber hybrid ratio was proposed. This study proves that the steel-basalt hybrid method can improve the tensile properties of ST-BF/FRCC after high temperatures exposure.
Highlights The addition of hybrid steel-basalt fibers significantly increased tensile properties after high-temperature exposure. The tensile properties show a trend of first increasing and then decreasing with the increase of temperature. A reliable tensile constitutive model of ST-BF/FRCC after high-temperature exposure is established.
Tensile behavior of high-performance hybrid steel-basalt fibers reinforced cementitious composites after high-temperature exposure
https://orcid.org/0000-0002-3245-4432
Abstract To solve the problem of tensile properties deterioration and explosive spalling of steel fiber reinforced cementitious composites (ST/FRCC) subjected to high temperature. A high-performance hybrid steel-basalt fibers reinforced cementitious composites (ST-BF/FRCC) is proposed. The mechanical properties of stress-strain curves, cracking stress, peak stress and strain energy of ST-BF/FRCC after high temperature exposure are experimentally investigated and the effects of various fiber volume fraction combination(1 %ST (S1.0B0), 0.5 %ST+0.5 %BF (S0.5B0.5), 1 %ST+1 %BF (S1.0B1.0)) and different temperatures (20 °C, 100 °C, 200 °C, 300 °C, 400 °C, 500 °C) are considered in tensile test. In addition, scanning electron microscopy (SEM) is used to study the microstructure morphology after high temperature exposure. Results show that the addition of basalt fiber significantly increased the cracking stress, ultimate tensile stress and strain energy. The results of scanning electron microscopy (SEM) indicate that the interfacial bond properties between fiber and matrix weakened with the increase of temperature. Furthermore, based on the experiment results, a temperature-dependent constitutive model to predict the tensile stress-strain relationship of ST-BF/FRCC with consideration of fiber hybrid ratio was proposed. This study proves that the steel-basalt hybrid method can improve the tensile properties of ST-BF/FRCC after high temperatures exposure.
Highlights The addition of hybrid steel-basalt fibers significantly increased tensile properties after high-temperature exposure. The tensile properties show a trend of first increasing and then decreasing with the increase of temperature. A reliable tensile constitutive model of ST-BF/FRCC after high-temperature exposure is established.
Tensile behavior of high-performance hybrid steel-basalt fibers reinforced cementitious composites after high-temperature exposure
Wu, Xiaoxin (author) / Cai, Ziwei (author) / Xie, Qun (author) / Chai, Xinwei (author) / Yu, Kequan (author) / Chen, Wenwen (author)
2024-03-27
Article (Journal)
Electronic Resource
English
Tensile behavior of basalt textile grid reinforced Engineering Cementitious Composite
| British Library Online Contents | 2019
Rate-dependent tensile behavior of high performance fiber reinforced cementitious composites
| British Library Online Contents | 2009