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Sustainable cement mortar bioformulated with a bioproduct obtained from fermentation of biodiesel’ crude glycerol
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Orientador(es)
Resumo(s)
This study analyses the potential of a new eco-friendly bioproduct to construction sustainability and its contribution for improving the fresh and hardened properties of cement mortar. The bioproduct was obtained from biomass grown using crude glycerol (biodiesel production waste). With similar functionality than petrochemical-based additions, these bioproducts encourage the decrease on the use of fossil-based raw materials with the concomitant reduction in their carbon footprint. The effect of bioproduct's sonication and storage for 3 day at 4 °C were assessed. Properties such as consistence, porosity, density, compressive and flexural strength, water droplet absorption, capillary absorption, drying rate, thermal conductivity and ultrasonic pulse velocity of the bioformulated mortars were compared with a control cement mortar. The findings show that the bioproducts can be used as renewable and eco-friendly alternative to petrochemical-based polymer admixtures to lengthen mortar service life, even after storage. Sonicated bioproduct improved the water related mortar properties, while non-sonicated bioproduct developed higher mechanical properties. Contributing for a cleaner production of cementitious products, an original waste from chemical industry was transformed into a valuable raw material for use in the construction industry.
Descrição
This research benefitted from an STSM grant awarded under COST Action CA15202 ( http://www.sarcos.enq.cam.ac.uk ). Funding was also provided by the Spanish Ministry of Economy, Industry and Competitiveness under project BIA2017-83526-R and by the Portuguese Foundation for Science and Technology (FCT/MCTES) by supporting the Civil Engineering Research and Innovation for Sustainability Unit-CERIS, Associate Laboratory for Green Chemistry-LAQV and Applied Molecular Biosciences Unit-UCIBIO (projects UIDB/50006/2020 , and UID/Multi/04378/2020 ).
Paulo C. Lemos acknowledge the support by FCT / MCTES for contract IF/01054/2014/CP1224/CT0005 .
Publisher Copyright:
© 2021 The Authors
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
Palavras-chave
Biodiesel’ crude glycerol Biopolymers Cement mortar Microbial mixed cultures Sustainable construction material Renewable Energy, Sustainability and the Environment General Environmental Science Strategy and Management Industrial and Manufacturing Engineering SDG 7 - Affordable and Clean Energy SDG 13 - Climate Action