Valorization of spent cooking oils in hydrophobic waste-based lime mortars for restorative rendering applications

The suitability of new lime mortars for restorative rendering applications was investigated. Air-, formulated- and hydraulic-lime mortars were synthesized with inclusion of two different types of spent sunflower cooking oils and, when necessary, brick waste powder as pozzolanic addition. The results of spent cooking oils addition in the mortars exhibited promising hydrophobic effects, such as sorptivity reduction up to 60 times and improvement of superficial durability. Addition of high-oleic acid cooking oil in 13wt% in the formulated and hydraulic lime mortars significantly increased their hydrophobicity without worsening their mechanical strengths. All the investigated mortars exhibited appropriate indexes as restorative materials.

» Author: Parsa Pahlavan, Stefania Manzi, Maria Teresa Rodriguez-Estrada, Maria Chiara Bignozzi

» Reference: Construction and Building Materials, Volume 146

» Publication Date: 15/08/2017

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This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement N° 690103