Evaluation of the properties of concrete reinforced with recycled tires and bamboo fibers in the construction in Lima, Peru

This study addresses the problem of solid waste management, in particular tire recycling and the need to find more sustainable solutions in the construction industry in Lima, Peru. The main objectiveof this study focuseson evaluating how the incorporation of recycled tires and bamboo fibers affects the mechanical properties of concrete and its strength when subjected to static loads. For its development, an experimental methodology was used that includes the preparation of concrete mixtures with different proportions of recycled tires and bamboo fibers, which are then subjected to compressive, flexural, and tensile strength tests under ASTM standards. Concrete without additives reached the highest compressive strength (269.72 kg/cm² at 28 days). However, mixes with 0.08% bamboo fibers or 10% recycled rubber achieved 88.18 kg/cm² and 199.09 kg/cm², respectively. When combined, the strength increased to 211.07 kg/cm² but showed no significant synergy, limiting its structural applications. In terms of flexural performance, rubber reduced the modulus of elasticity (3.16 GPa vs. 51.97 GPa for control concrete), while bamboo fibers reached 26.61 GPa. Notably, their combination resulted in the highest modulus among modified mixes (56.78 GPa). Finally, the results will show that recycled tires improve impact absorption and bamboo fibers increase tenacity and flexural strength, suggesting that this combination is suitable for pavement and bridge applications, providing a more sustainable solution and reducing the environmental impact related to solid waste.