Nowadays the construction of buildings confronts numerous challenges, environmentally, economically, and structurally efficiently. In addition, the saving of raw sources become essentially required especially for the building and construction sector. One of these solutions is based on utilizing sustainable material for construction technology. The goal of this research is to develop a more environmentally friendly material with the same performance qualities as adhesive epoxy and steel reinforcing bars. The goals of this research may be accomplished in two stages. The first step in reinforcing reinforced concrete (RC) beams is making geopolymer paste (GPP), a new kind of externally adhesive substance that may replace epoxy polymer (EP) with textiles made of synthetic glass fibers and natural jute fibers. The second advantage of GPP over PET resin for making rebars is using synthetic and natural threads, such as jute and glass fibers. In this investigation, nine reinforced concrete beams were prepared. Four of these beams were reinforced at the flexural zone with a combination of glass fiber textile (GFT) and jute fiber textile (JFT) externally bonded with epoxy or geopolymer paste. The other four specimens were reinforced with 50% GFR or JFR and 50% steel bars. In addition, one control beam is reinforced with 100% steel bars. A three-point load test is experimented on, and all RC beams are monitored up to failure. The study and analysis focused on load deflection, toughness, ductility index, and failure mechanism of beams. The theoretical ultimate load was calculated to predict and compare it to the experimental ultimate capacity of beam. According to the findings of the tests, sustainable GPP was able to harden the fiber rebars manufacturing process and serve as an externally excellent adhesive substance, on par with or even better than EP resin. The beam strengthened with jute fiber sheet that installed using GPP exhibited more cracking compared to the installation using EP resin.

Geopolymer paste, epoxy resin, polyester resin, structural behavior, fiber rebars, textile fibers, strengthening technique