Effect of sisal fibre treatment on the hydration and thermophysical properties of a cement biocomposite
Source abstract
Abstract
Cement-based biocomposites are a current area of construction research. Plant fibres retard the setting times of cement due to their hydrophilic nature and the thermal properties of raw cement mortar containing plant fibres can be problematic. This aim of this work was to study the effect of fibre treatment to reduce the hydrophilicity of natural fibres while enhancing the thermal properties of the cementitious matrix. The first part of this study focused on structural and morphological aspects. Scanning electron microscopy showed a tiny calcium layer around the sisal fibre treated with sodium hydroxide and paraffin oil on the adhesion surface. Fourier transform infrared spectroscopy revealed a disparity in the peaks of the absorption bands of calcium carbonate and calcium hydroxide. The treatment slowed the alkaline hydrolysis and mineralisation of the fibre cell walls in the interfacial transition zone, thus promoting cement hydration. The second part of this work was a thermophysical study of the composites. The inclusion of sisal fibres led to remarkable decreases in thermal conductivity and heat capacity. The best thermal properties were obtained for the composite with sisal fibre immersed in paraffin oil. Biomortars with treated sisal fibre are thus promising from an insulation point of view.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Natural Fiber Reinforced Composites · Innovations in Concrete and Construction Materials · Innovative concrete reinforcement materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
PhD student, LMPGI, High School of Technology, Hassan II University of Casablanca, Oasis, Casablanca, Morocco; CEDoc, National High School of Electricity and Mechanics (ENSEM), Hassan II University of Casablanca, Oasis, Casablanca, Morocco
Professor, LPMMAT, Faculty of Sciences Ain chock, Hassan II University of Casablanca, Maârif, Casablanca, Morocco (corresponding author: )
Professor, LMPGI, High School of Technology, Hassan II University of Casablanca, Oasis, Casablanca, Morocco
PhD student, LMPGI, High School of Technology, Hassan II University of Casablanca, Oasis, Casablanca, Morocco; LPMMAT, Faculty of Sciences Ain chock, Hassan II University of Casablanca, Maârif, Casablanca, Morocco
Professor, LEPE, High School of Technology, Hassan II University of Casablanca, Oasis, Casablanca, Morocco
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