GHORBEL, E.; Omary, S.; Karrech, A. Recovered Tire-Derived Aggregates for Thermally Insulating Lightweight Mortars. Preprints2024, 2024011372. https://doi.org/10.20944/preprints202401.1372.v1
APA Style
GHORBEL, E., Omary, S., & Karrech, A. (2024). Recovered Tire-Derived Aggregates for Thermally Insulating Lightweight Mortars. Preprints. https://doi.org/10.20944/preprints202401.1372.v1
Chicago/Turabian Style
GHORBEL, E., Safiullah Omary and Ali Karrech. 2024 "Recovered Tire-Derived Aggregates for Thermally Insulating Lightweight Mortars" Preprints. https://doi.org/10.20944/preprints202401.1372.v1
Abstract
In this study, seven mortar mixes were prepared by replacing natural sand by crumb rubber ,CR, (10%, 25%, 50%, 60%, 75% and 100%). The properties of mortars, both in their fresh and hardened states, were studied. Key characterisitcs, including density, water absorption coefficient, porosity, thermal conductivity, heat capacity, shrinkage/swelling, elastic modulus, compressive strength, flexure strength, fracture energy and performance after exposure to heat, were evaluated. The results obtained showed that as the CR fraction increased, density, initial setting time, and workability decreased but mortars with CR fractions ranged between 25% and 50% are lightweight and can be used for repairing as they fulfill satndards. It was observed that strengths and stiffness decreased with higher CR content while shrinkage increased for CR percentage higher than 60%. However, up to 50% of CR content the mortars obey to the standards for repair. Interestingly, incorporating up to 50% waste tires proved to improve comfort and thermal resistance without affecting thermal inertia. A slight increase in the mass loss is observed when mortars are exposed to high temperatures. Mortars containing CR between 25% and 50% can be classified as lightweight and thermally insulating mortars, suitable for repairing concrete structures in accordance with industry standards.
Keywords
Crumb Rubbe; mortar; mechanical properties; thermal properties; bond strength; fire
Subject
Engineering, Architecture, Building and Construction
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
