| Dynamic mechanical response, energy absorption capacity, and constitutive modeling of polypropylene fiber-reinforced foamed concrete under high temperature | |
Chen, Longyang; Li PH(李鹏辉); Guo, Weiguo; Zhang, Dongjian; Wang, Ruifeng ; Gao, Meng
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| Corresponding Author | Li, Penghui([email protected]) ; Guo, Weiguo([email protected]) |
| Source Publication | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
 |
| 2024-05-01 | |
| Volume | 30Pages:807-822 |
| ISSN | 2238-7854 |
| Abstract | This study utilized a modified split Hopkinson pressure bar apparatus to subject polypropylene fiber-reinforced foamed concrete (PPFRFC) to substantial deformation loading at high temperatures and strain rates. Based on experimental results, the study systematically investigated the coupled effects of temperature and strain rate on the dynamic mechanical behavior of PPFRFC across a broad range of strain rates (0.001 s-1 to 1300 s-1) and temperatures (25 degrees C-600 degrees C). The findings revealed that elevated temperatures significantly affected various mechanical parameters including peak stress, plateau stress, elastic modulus, densification strain, dynamic increase factor (DIF), and energy absorption. Notably, with increasing temperature, the strain rate amplified the peak stress, plateau stress, and energy absorption, whereas its influence on the elastic modulus diminished. Microstructural examination revealed the absence of notable cracks in the pore walls after high-temperatures exposure. However, degradation of the cement matrix results in a loose skeleton structure within the pore walls, leading to a considerable reduction in material strength. Finally, a constitutive model was developed, considering the coupling effects of temperature and strain rate. This model accurately describes the mechanical response of the PPFRFC across various stages, including the elastic, plateau, and densification stages, as well as the stress drop behavior in the transition stage. Moreover, it effectively reflects the influence of strain rate and temperature coupling effects on the material's mechanical properties. |
| Keyword | Foamed concrete High temperature Dynamic increase factor Energy absorption capacity High strain rate Dynamic constitutive model |
| DOI | 10.1016/j.jmrt.2024.03.124 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001219473800001 |
| WOS Keyword | COMPRESSIVE BEHAVIOR ; STRENGTH ENHANCEMENT ; ALUMINUM FOAMS ; POROSITY ; COMPOSITE |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| Funding Project | National Natural Science Foundation of China[12072287] ; National Natural Science Foundation of China[12372365] ; Innovation Foundation for Doctor Dissertation of Northwestern Poly-technical University[CX2021043] |
| Funding Organization | National Natural Science Foundation of China ; Innovation Foundation for Doctor Dissertation of Northwestern Poly-technical University |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Li, Penghui ; Guo, Weiguo |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/95275 |
| Collection | 非线性力学国家重点实验室 |
| Recommended Citation GB/T 7714 | Chen, Longyang,Li PH,Guo, Weiguo,et al. Dynamic mechanical response, energy absorption capacity, and constitutive modeling of polypropylene fiber-reinforced foamed concrete under high temperature[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2024,30:807-822.Rp_Au:Li, Penghui, Guo, Weiguo |
| APA | Chen, Longyang,李鹏辉,Guo, Weiguo,Zhang, Dongjian,Wang, Ruifeng,&Gao, Meng.(2024).Dynamic mechanical response, energy absorption capacity, and constitutive modeling of polypropylene fiber-reinforced foamed concrete under high temperature.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,30,807-822. |
| MLA | Chen, Longyang,et al."Dynamic mechanical response, energy absorption capacity, and constitutive modeling of polypropylene fiber-reinforced foamed concrete under high temperature".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 30(2024):807-822. |
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