| dc.description.abstract | Concrete infrastructure in Indonesia is still dominated by natural
aggregate materials, but the utilization of waste rubber tires as a coarse
aggregate substitution is proposed to reduce environmental impacts. This
study examines the effect of waste tire substitution on compressive
strength, modulus of elasticity, and flexural strength of concrete with 2%,
4%, 6%, and 8% substitution variations. The specimens were cylinders of
150 mm diameter and 300 mm height, and beams of 150 mm × 150 mm
× 600 mm. The results showed that 4% substitution decreased the
compressive strength by 25,65%, while 4% substitution increased the
flexural strength by 16,96%. This indicates that although waste tires
reduce compressive strength, flexibility and crack resistance of concrete
can be increased at certain levels. This innovation has the potential to
reduce natural aggregate consumption and support sustainable concrete
construction, while providing a reference for the development of
environmentally friendly concrete. | en_US |
