RT info:eu-repo/semantics/article
T1 Sustainable paving solutions: Physical and outdoor behavior of cement cobblestones with industrial polymer roof waste aggregates
A1 Alonso Díez, Álvaro
A1 Arroyo Sanz, Raquel
A1 Serna Avendaño, Sara
A1 Nevshupa, Roman
A1 Calderón Carpintero, Verónica
K1 Cobblestone
K1 Mortar
K1 Polyurethane waste
K1 Circular economy
K1 Durability
K1 Materiales de construcción
K1 Building materials
K1 Resistencia de materiales
K1 Strength of materials
K1 Ingeniería civil
K1 Civil engineering
AB To reduce the use of natural resources and promote a circular economy in the construction sector, this study investigates the valorization of polyurethane, polyester, and fiberglass-based roofing waste from the automotive industry as a partial replacement for natural fine aggregates in cement-based mortar paving blocks. Paving elements were manufactured with replacement levels of 20 %, 40 %, and 60 % by volume and tested for mechanical, physical, and durability properties in related standards. The results show that all mixtures met the minimum splitting tensile strength requirement of 3.60 MPa, with 40 % replacement achieving a peak improvement of 9.3 % compared to the reference. The density decreased by up to 300 kg/m³ , improving handling and reducing transportation impacts, whereas wear resistance, slip resistance, and fire resistance remained within permissible limits. Durability tests, including salt crystallization, freeze–thaw cycles, and outdoor exposure, confirmed the suitability of the materials for exterior paving applications. This research demonstrates that PU-based roofing waste can replace up to 60 % of natural fine aggregates in paving block production without compromising performance, offering a technically viable and environmentally beneficial alternative for sustainable urban infrastructure.
PB Elsevier
SN 2214-5095
YR 2025
FD 2025-12
LK https://hdl.handle.net/10259/11205
UL https://hdl.handle.net/10259/11205
LA eng
NO The authors gratefully acknowledge the financial support of the BU070P20 Project funded by the Fondo Europeo de Desarrollo Regional (FEDER) and the Junta de Castilla y León (Spain). This work was also supported by the Regional Government of Castilla y León (Junta de Castilla y León), the Ministry of Science and Innovation MCINN, and the European Union NextGenerationEU/PRTR.
DS Repositorio Institucional de la Universidad de Burgos
RD 29-abr-2026