Vilaboa Díaz, AndrésBello Bugallo, Pastora MaríaFrancisco López, Ahinara2022-09-012022-09-012022Waste and Biomass Valorization (2022). https://doi.org/10.1007/s12649-022-01820-y1877-2641http://hdl.handle.net/10347/29190The objective of the work is to evaluate the thermal behaviour and the environmental impact of selected building biowaste-based materials, mainly biomass from agrowaste. An evaluation of the state of the art of the materials used from waste or biomass in the construction of buildings is carried out. The selected building materials are based on data availability: hemp concrete, isotex, bricks with olive core flour (OCF), bricks with wheat straw (WS). Subsequently, thermal behaviour is evaluated as a function of decrement factor, time lag and as an application in the thermal envelope of a building. Finally, a life cycle assessment of each material is carried out, including the calculation of the following indicators: non-renewable energy, cumulative energy demand and global warming potential. Hemp concrete and isotex are the materials with better thermal behaviour (lower decrement factor and greater time lag) like conventional materials, but with lower environmental impact. Regarding bricks, mixtures of 8% OCF and 7%WS generate more stable indoor temperatures than 4% OCF and 3%WS. Compared with conventional materials, building materials with incorporated biomass have better thermal behaviour and allow the construction of buildings with lower life cycle impacteng© The Author(s) 2022. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/Atribución 4.0 Internacionalhttp://creativecommons.org/licenses/by/4.0/Biowaste-based materialsAgrowasteThermal behaviourEnergy demandLife cycle assessmentSustainable buildingsjournal article10.1007/s12649-022-01820-y1877-265Xopen access