Description
The building industry demonstrated a growing interest in recently developed biocomposite materials for structural strengthening based on natural fibers as an alternative to synthetic fibers. In the last years, research activities are focused on investigating the mechanical properties of different types of natural fibers, e.g. hemp, sisal, kenaf, Spanish Broom fibers. Despite the numerous advantages associated with the use of these natural resources, their performance is affected by shortcomings in morphology, mechanical behavior, and durability. These factors can compromise the interaction between matrix and fibers, resulting in poor structural performance. Indeed, when natural fibers are embedded in mortar-based matrices, cracks of the mortar can occur at early load stage before the natural fibers begin to fulfill their reinforcing role. This work investigates the use of bio-based coatings and treatments for natural fibers to address these issues, e.g. treatments based on sodium hydroxide and graphene-based coatings.
