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Experimental Investigation on Dynamic Compressive Mechanical Properties of PVA Fiber-reinforced Recycled Aggregate Concrete
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Sheng PENG1a, Jia-long WU1a, Li HE1b, Dong-wang ZHONG1b, Xian-qi XIE2, Lu-jun CAI1b
Blasting | 2025, 42(3) : 18 - 25
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Blasting | 2025, 42(3): 18-25
• THEORETICAL AND TECHNOLOGICAL EXPLORATION •
Experimental Investigation on Dynamic Compressive Mechanical Properties of PVA Fiber-reinforced Recycled Aggregate Concrete
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Sheng PENG1a, Jia-long WU1a, Li HE1b, Dong-wang ZHONG1b, Xian-qi XIE2, Lu-jun CAI1b
Affiliations
  • 1a.College of City Construction, Wuhan 430065, China
  • 1b.Hubei Province Key Laboratory of Systems Science in Metallurgical Process, Wuhan University of Science and Technology, Wuhan 430065, China
  • 2.State Key Laboratory of Precision Blasting, Jianghan University, Wuhan 430056, China
Published: 2025-05-15 doi: 10.3963/j.issn.1001-487X.2025.03.003
Outline
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To enhance the mechanical performance of recycled aggregate concrete (RAC) under dynamic loading, this study systematically investigates the synergistic effects of polyvinyl alcohol (PVA) fiber reinforcement and recycled coarse aggregate (RCA) replacement on the dynamic mechanical performance of RAC through split Hopkinson pressure bar (SHPB) impact compression tests. Thirty-six specimen groups with varying PVA fiber dosages (0%, 0.1%, 0.3%) and RCA replacement ratios (30%, 40%, 50%) were designed to elucidate the damage mechanisms and enhancement mechanisms of PVA fiber-reinforced recycled aggregate concrete (PVA-RAC) under impact loading, utilizing comprehensive analyses of dynamic stress-strain curves, failure patterns, and dynamic increase factors (DIF). The results demonstrate that PVA fibers significantly suppress crack propagation via bridging effects, thereby altering the material's failure mode from brittle fragmentation to ductile cracking. Both dynamic peak stress and DIF exhibit substantial improvements with increasing fiber content and strain rate. While higher RCA replacement ratios (40%~50%) diminish compressive strength due to the inherent porosity of RCA, their heterogeneous interfacial properties promote energy dissipation through complex crack propagation paths, thereby partially mitigating strength losses. This study establishes a theoretical framework for the dynamic design and application of PVA-RAC in seismic-resistant protective structures. Furthermore, it pioneers a synergistic approach to integrating construction waste recycling with the development of high-performance recycled building materials. The findings have both theoretical innovation and practical engineering significance.

PVA fiber-reinforced recycled aggregate concrete  /  dynamic compression  /  mechanical property  /  split Hopkinson pressure bar  /  dynamic increase factor
Sheng PENG, Jia-long WU, Li HE, Dong-wang ZHONG, Xian-qi XIE, Lu-jun CAI. Experimental Investigation on Dynamic Compressive Mechanical Properties of PVA Fiber-reinforced Recycled Aggregate Concrete[J]. Blasting, 2025 , 42 (3) : 18 -25 . DOI: 10.3963/j.issn.1001-487X.2025.03.003
Funding
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  • Natural Science Foundation of Hubei Province funding project(2022CFB662)
  • Wuhan Knowledge Innovation Special Project Dawn Plan Project(2023020201020403)
  • Open Fund of State Key Laboratory of Precision Blasting, Jianghan University(PBSKL2022D05)
Appendix
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Year 2025 volume 42 Issue 3
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106
49
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Article Info
doi: 10.3963/j.issn.1001-487X.2025.03.003
  • Receive Date：2025-04-08
  • Online Date：2026-03-17
  • Published：2025-05-15
Article Data
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History
  • Received：2025-04-08
Funding
Natural Science Foundation of Hubei Province funding project(2022CFB662)
Wuhan Knowledge Innovation Special Project Dawn Plan Project(2023020201020403)
Open Fund of State Key Laboratory of Precision Blasting, Jianghan University(PBSKL2022D05)
Affiliations
    1a.College of City Construction, Wuhan 430065, China
    1b.Hubei Province Key Laboratory of Systems Science in Metallurgical Process, Wuhan University of Science and Technology, Wuhan 430065, China
    2.State Key Laboratory of Precision Blasting, Jianghan University, Wuhan 430056, China

Corresponding:

HE Li (1986-), male, Ph.D, professor, mainly engaged in research on intelligent blasting theory and technology, (E-mail) .
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https://castjournals.cast.org.cn/joweb/bp/EN/10.3963/j.issn.1001-487X.2025.03.003
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Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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