Synergistic influence of eco-friendly treatment and fly ash on water absorption morphology and hardness of grewia optiva/basalt fiber hybrid polyester composites

Himanshu Prasad Raturi, Lalta Prasad, Niraj Kumar Mishra, Sanjeev Kumar, Mechanical Engineering Department, National Institute of Technology, Pauri Garhwal, Mechanical Engineering Department, Uttaranchal University

Journal of Composite Materials

Published online on May 08, 2026

Abstract

Journal of Composite Materials, Ahead of Print.
The present study investigates composites reinforced with treated Grewia optiva (GO), basalt (BA) fibers both chopped into 3 mm length and fly ash (FA) fillers in an unsaturated polyester resin (UPR) matrix. GO fibers were treated with a 5 wt.% mild ...