Compressive Performance of Fiber Reinforced Recycled Aggregate Concrete by Basalt Fiber Reinforced Polymer-Polyvinyl Chloride Composite Jackets

The development of recycled aggregate concrete (RAC) provides a new approach to limiting the waste natural resources. In present study, mechanical properties and deformability RACs were improved by adding basalt fibers (BFs) using external restraints, such as fiber-reinforced polymer (FRP) jacket or PVC pipe. Samples tested under axial compression. results showed that RAC (50% replacement aggregate) containing 0.2% BFs had best properties. Using either reinforcement slight effect on loadbearing capacity mode failure. With different levels BFs, compressive strengths specimens reinforced with 1-layer 3-layer fiber (BFRP) increased 6.7%–10.5% 16.5%–23.7%, respectively, ultimate strains 48.5%–80.7% 97.1%–141.1%, respectively. peak stress BFRP-PVC 42.2%, strain 131.3%, relative control. This combined high tensile strength BFRP, which post-peak behavior, PVC, enhanced structural durability. addition, investigate influence various constraints stress-strain response was analyzed. Based analysis experimental results, model an amended proposed. models verified well; result predictions from calculations are generally consistent data (error within 10%). this study provide theoretical basis reference for future applications concrete.