Mechanical and thermal properties of cement mortar composites incorporating micronized miscanthus fibers
Article dans une revue avec comité de lecture
Date
2023Journal
Journal of Materials Research and TechnologyRésumé
This study examines the impact of incorporating micronized miscanthus fibers into a
cement mortar, focusing on the mechanical and thermal effects. Initially, an experimental
procedure was devised to create mortar mixtures with varying amounts of miscanthus
fibers, with a maximum dosage of 7 wt%. This involved saturating the fibers with water
beforehand to maintain the workability of the fresh mixes. The resulting hardened bio-
based mortars were then evaluated after 28 days in terms of their microstructure, me-
chanical strength (assessed through flexural and compression tests), and thermophysical
properties (measured using the Hot-Disk technique to determine thermal conductivity/
diffusivity and volumetric heat capacity). The experimental findings revealed significant
enhancements (up to 87%) in the thermal resistance of the mortars due to the addition of
fibers. However, this improvement was accompanied by a considerable reduction in me-
chanical strength. As a result, while these bio-based mortars are unsuitable for structural
applications, they still possess adequate mechanical properties for handling and are
appropriate for insulation purposes in construction
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