unidirectional carbon fiber fabric for construction

The main advantage of using this system is a reduction in premature debonding failures. as well as delaying the onset of material cracking. Further, Mahmood and Ingham . performed a comparative study for different sizes of CFRP strips on the substrate of the masonry wall under in-plane shear. The strip application in the horizontal, vertical, or diagonal directions directly influenced the in-plane strength of masonry walls. This research showed that CFRP application would enhance the in-plane strength, stiffness, and toughness of masonry walls. With the advantage of strength enhancement, the CFRP-retrofitted wall also suffered from fabric de-bonding. In general, high-adhesive epoxy-based compounds are used to apply CFRP on the surface of masonry walls. However, the use of adhesives on the surface of historic masonry buildings  is not encouraged due to poor temperature resistance, low vapour permeability and poor chemical incompatibility with the masonry substrate. CFRP strips with adhesives introduce a deep impregnation, which makes the epoxy almost impossible to remove, and creates durability concerns due to the gluing system .