Open Access

ARTICLE

Numerical Study on the Behaviour of Hybrid FRPs Reinforced RC Slabs Subjected to Blast Loads

by Mahdi Hosseini^1,2,*, Bingyu Jian^1,2, Jian Zhang³, Haitao Li^1,2,*, Rodolfo Lorenzo⁴, Ahmad Hosseini⁵, Pritam Ghosh⁵, Feng Shen⁶, Dong Yang^1,2, Ziang Wang^1,2

1 College of Civil Engineering, Nanjing Forestry University, Nanjing, 210037, China
2 Joint International Research Laboratory for Bio-Composite Building Materials and Structures, Nanjing Forestry University, Nanjing, 210037, China
3 Nantong Shirui Reinforced Plastic Products Co., Ltd., Nantong, 226002, China
4 University College London, London, WC1E 6BT, UK
5 Fiber Composite Laboratory, Hindustan Institute of Technology and Science, Chennai, 603103, India
6 Jiangsu Fiber Composite Co., Ltd., Yancheng, 224700, China

* Corresponding Authors: Mahdi Hosseini. Email: ; Haitao Li. Email:

Journal of Renewable Materials 2023, 11(9), 3517-3531. https://doi.org/10.32604/jrm.2023.028164

Received 08 December 2022; Accepted 29 December 2022; Issue published 20 July 2023

Abstract

The safety of civilian and military infrastructure is a concern due to an increase in explosive risks, which has led to a demand for high-strength civil infrastructure with improved energy absorption capacity. In this study, a Finite Element (FE) numerical model was developed to determine the effect of hybrid Fibre Reinforced Polymer (FRP) as a strengthening material on full-scale Reinforced Concrete (RC) slabs. The reinforcing materials under consideration were Carbon (CFRP) and Glass (GFRP) fibres, which were subjected to blast loads to determine the structural response. A laminated composite fabric material model was utilized to model the failure of composite, which facilitates the consideration of strain rate effects. The damaged area of the laminate is determined in the FE model, and it is in good agreement with the corresponding experimental results in the literature. Models containing different stacking sequences were built to demonstrate their efficiency in resisting blast loads. In general, the damaged area was reduced when a hybrid reinforcement with CFRP as the top layer was used.

---

Graphic Abstract

---

Keywords

---