ABSTRACT
Walls are the main structural elements used to resist lateral forces in masonry structures. This chapter investigates the effects of bonding Eco-friendly Ductile Cementitious Composite (EDCC) repair material to the surfaces of plain hollow concrete block masonry walls on the dynamic characteristics of those walls. The thickness of the EDCC repair material applied to the wall surfaces was about 20 mm. The main aim is to use the EDCC to improve the seismic performance of existing buildings, such as schools and office complexes in British Columbia, Canada, particularly partition walls. The application of the EDCC increased the stiffness of the walls so that the inplane natural frequency increased to 64.3 and 58.3 Hz in the walls 1S-20-1 and 1S-20-2, respectively. In the uncracked state, the natural frequency of the strengthened walls increased significantly as a consequence of the application of the EDCC.
