# Study on dynamic behavior of AFRP-wrapped circular concrete specimens under repeated impacts

> Title: Study on dynamic behavior of AFRP-wrapped circular concrete specimens under repeated impacts Page Range: p.103-112 Author(s): Hengwen Song; Hui Yang; Shi Zhang File size: Download the pdf (subscribers only) Buy the pdf (non-subscribers) Journal: Polymers and Polymer Composites Issue Year: ppc...

Canonical URL: https://polymerjournals.com/study-on-dynamic-behavior-of-afrp-wrapped-circular-concrete-specimens-under-repeated-impacts/
Published: 2017-01-01T00:00:00+00:00
Categories: Polymers and Polymer Composites

**Title: Study on dynamic behavior of AFRP-wrapped circular concrete specimens under repeated impacts**
 Page Range: p.103-112
 Author(s): Hengwen Song; Hui Yang; Shi Zhang
 File size:
 ![](http://dload.gif) [Download the pdf](http://journals.asp?Page=111&JournalDownload=ON&JournalType=ppc&JournalIssue=ppc25-1&JournalID=102901&JIP=) (subscribers only)
 ![](http://handbuy.gif) Buy the pdf (non-subscribers)
 Journal: Polymers and Polymer Composites
 Issue Year: ppc
 Volume: 25
 Issue No: No.1

**Abstract**
 A series of damage tests and axially repeated compressive tests with high strain rates were conducted to investigate the behaviour of aramid fibre reinforced polymer (AFRP) wrapped concrete under repeated impacts. The relation between damage condition and variables such as impact number and polymer thickness were examined. The tests were performed using a 100 mm diameter Split Hopkinson Pressure Bar (SHPB) apparatus and a nonmetal supersonic test meter. Various AFRP layers were applied to produce varied confinement ratios. The experimental results indicated that the AFRP-wrapped concrete exhibited excellent performance in resisting repeated impacts. Also, the specimens maintained their shapes and bearing capacity after multiple impacts with a mean strain rate of 50 s-1. No distinct decline was observed from the history of peak stress and impact toughness in AFRP-wrapped concrete. Moreover, additional AFRP layers significantly decreased the impact damage on the core concrete, as reflected by the different strain rate histories in damage progression. 28 Refs.

---