RT Journal Article
T1 Form-stable bitumen/paraffin-wax/polymer binders for energy-efficient building applications
A1 Cuadri Vega, Antonio Abad
A1 Delgado Sánchez, Clara
A1 Tenorio Alfonso, Adrián
A1 Partal López, Pedro
A1 Navarro Domínguez, Francisco Javier
AB Novel form-stable bitumen/paraffin-wax/polymer binders were successfully manufactured to be applied as energy-efficient building materials with advanced thermal energy storage and thermoregulation features. These roofing materials are composed of bitumen (B), styrene butadiene styrene copolymer (SBS), and paraffin wax (PW) as phase change material (PCM) for thermal energy storage applications. Systems with a fixed weight ratio B/SBS = 7.33 and PW concentration ranging from 0 to 70 wt% were prepared. Then, thermal stability, microstructure, rheological properties, technological and leakproof performance tests were performed on these binders to assess the optimal compositions. After that, a comprehensive thermal energy storage characterization was conducted on the selected prototypes and, finally, the temperature regulation performance was studied by using simulated solar irradiation. All materials show excellent thermal stability no matter PW concentration used, whereas the rheological properties improve as PW content in blends increases. However, softening temperaturerequirements, specified by ASTM D8051, limited PW concentration to 30 wt%. Interestingly, no liquid PW leakage from bituminous matrix was found for such a concentration, which has a high heat storage capacity (ca. 60 J/g) and suitable thermal properties (e.g. thermal conductivity and specific heat capacity). As a result, material exhibits a complex solar and thermal behaviour that yields a Latent Heat Thermoregulation Index (LHTI) value greater than for other efficient energy building materials.
PB Elsevier
SN 0266-6138
SN 1532-3099 (electrónico)
YR 2024
FD 2024-06-01
LK https://hdl.handle.net/10272/23996
UL https://hdl.handle.net/10272/23996
LA eng
NO Cuadri, A. A., Delgado-Sánchez, C., Tenorio-Alfonso, A., Partal, P., & Navarro, F. J. (2024). Form-stable bitumen/paraffin-wax/polymer binders for energy-efficient building applications. In Journal of Energy Storage (Vol. 93, p. 112420). Elsevier BV. https://doi.org/10.1016/j.est.2024.112420
NO This work is part of the project TED2021-131284B-I00 funded by MCIN/AEI/10.13039/501100011033 (Spanish Ministry of Science and Innovation) and European Union Next Generation EU/PRTR; and the Cátedra Fundaci´on CEPSA through the project “BituFoil” of the edition 2023. Clara Delgado-S´anchez also acknowledges financial support from Junta de Andalucía through post-doctoral Grant No. DC 01228 (PAIDI 2020), co-funded by the EU Fondo Social Europeo (FSE). Funding for open access charge: Universidad de Huelva / CBUA.
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026