<p>The most popular material that is both structural and adaptable is concrete because of its diverse and complicated designs. One important factor that directly affects concrete’s strength and longevity is curing. Conventional curing processes need a significant amount of water to be present throughout the process. This challenge becomes difficult in regions that are experiencing a lack of water and for the work that is being done on concrete in high-rise buildings. This research looks into the durability performance of self-curing concrete by using polyethylene glycol-400 (PEG-400) in conjunction with sugar cane bagasse ash (SCBA) and copper slag (CS). This work may yield concrete that requires no additional water for curing. An experimental blend of detailed mixtures will be employed to assess durability performance, including a control mix and various different material combinations used in the mixture. The experiment began with the addition of PEG-400 up to 2% with a 0.5% interval. For the next four concrete mixtures, we substituted 40% copper slag for the fine aggregate and 20% SCBA for the cement, with 5% intervals between each. We kept the PEG-400 concentration constant at 1% (optimum) in all four mixes. This research employed five distinct methods to study durability performance. These methods included water absorption, rapid chloride permeability, water permeability, sorptivity, and acid attack tests, all of which were performed on concrete specimens. This study found that self-curing concrete significantly improved structural performance when copper slag and sugarcane bagasse ash were added to the mix.</p>