The use of natural fibers in repairing and strengthening of cultural heritage buildings

Natural fibers are getting a huge interest amongst researchers due to their green, economical and good mechanical properties when employed in different composites as reinforcements. In this work we present a review on the applications of natural fibers, essentially as composites, for structural purposes with focus on repairing and strengthening of cultural built heritage. Different testing methods with their results combined with the studying of the enhancements attained by applying natural fiber composites, e.g. textile reinforced mortar (TRM), to weak masonry are discussed. Durability challenges mainly due to the hydrophilic nature of the natural fibers are discussed together with some possible solutions.