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Abstract
This study suggests a new application of biochar particles into the cementitious material as a sustainable solution to prevent depletion of virgin aggregates and increase of carbon footprint. Biochar from olive stone wastes (OSB) is suggested for production of lightweight mortar to replace 25%, 45% and 60% of coarse sand (%V) with biochar. Some experiments are planned to assess the viability of inclusion of coarser particles of biochar in the cement mortar and its effect on the density, water absorption, UPV, modulus of elasticity, thermal conductivity and compressive strength. The experimental results are discussed and the possible correlation between the properties is established. The results show that the replacement of coarse sand with OSB up to 60% does not compromise the performance of cement mortar. They imply the promising effect of biochar addition on reduction of dead load and improvement of thermal and sound insulation of the lightweight mortar.
Acknowledgements
The authors would like to acknowledge the support of the H2020 EU Research and Innovation programme for the funding of the Paperchain project under grant agreement no. 730305. Thanks are due to the Portuguese Foundation for Science and Technology (FCT)/Ministry of Science, Technology and Higher Education (MCTES) for the financial support to CESAM (UIDP/50017/2020 + U IDB/50017/2020) and RISCO (FCT/UIDB/ECI/04450/2020), through national funds.
CRediT authorship contribution statement
Hamid Maljaee: Conceptualization, Investigation, Methodology, Formal analysis, Data curation, Writing—Original Draft. Rozita Madadi: Methdology, Writing—Review & Editing. Helena Paiva: Writing—Review & Editing. Luis Tarelho: Resources. Miguel Morais: Resources. Victor M. Ferreira: Resources, Supervision, Writing—Review & Editing, Funding acquisition.
Disclosure statement
No potential conflict of interest was reported by the authors.