Mechanical Properties and Air Permeability of Concrete Containing Waste Tires Extracts

The safe disposal of waste tires has been seen as having a negative impact on the environment. To mitigate this impact, components can be used in production green concrete. This study explores effects curing and drying regime mechanical properties permeation characteristics concrete containing both crumbed rubber steel fibers that are removed from tires. Five mixes were designed, cubes, cylinders, prisms cast using extracts. Crumb was treated by submersion sodium hydroxide then to partially replace 10% 30% fine aggregates mix. Extracted added at rate 1% 2% per volume each Compressive indirect splitting tensile well flexural strengths conducted after normal while observing several conditions. Additionally, air permeability assessed portable apparatus developed assess easily. For test specimens partial replacement aggregate crumb fibers, it discovered strength higher than control mix 21% 22.6%, respectively. included when exposed oven 105°C for 12 h, compressive results increased 17% compared with same Unlike results, decreased exposing elevated temperature. addition fine-aggregate resulted increasing different degrees depending percentages used. oven-drying improved reducing indicated their time index 15% air-dried specimens. Using tire extracts recommended indoor outdoor applications. showed viable, economic, environmentally friendly method carbon footprint.