Investigation of the effect of using andesite stone waste as aggregate in concrete on concrete properties and reinforcement corrosion

Aggregates constitute approximately 70–75% of the concrete widely used in the construction industry; this high ratio leads to the rapid depletion of natural aggregate resources and increases environmental impacts, thus necessitating the search for alternative and sustainable materials. In this context, waste stone generated in quarries or the natural stone industry is utilized as a substitute for fine or coarse aggregate in concrete and mortar production at certain ratios after undergoing specific physical processes. In this study, the mechanical and physical properties and corrosion effects of blended concretes produced with aggregate obtained from Andesite Stone Waste (ASW) were investigated. CEM I 42.5/R type Portland cement was used as the binder in the concrete samples produced for experimental studies. Crushed Sand (CS) with a grain size of 0–4 mm and Crushed Stone (CT) with a grain size of 4–12 mm were used as the fine aggregate in concrete production. Aggregate obtained from ATA was incorporated into the mixture by replacing CC at 25%, 50%, 75%, and 100% by weight. The water/cement ratio was kept constant at 0.49. Slump tests were applied to the fresh concrete mixture. Hardened concrete tests were performed at a 28-day cure age. Water absorption, porosity, unit weight, capillary water absorption, ultrasound transmission velocity, electrical resistivity, compressive strength at 7-28 day cure ages, wear (Böhme), hydrochloric acid resistance (HCl), and accelerated corrosion tests were conducted with reinforced samples. Differences in concrete behavior due to the effect of ATA were observed as a result of the test. When the data were examined, it was observed that the use of ATA at consistent and defined ratios positively affected the concrete properties and corrosion resistance.