Crack Formation in CFRP Grid Reinforced Mortar Member – A Case Study [ READ ]
Dr. S. Vijaya Mohan Rao
This paper reports from a research study, aiming to investigate the crack development of a CFRP grid-reinforced mortar member tested in uniaxial tension. This composition of CFRP together with the mortar forms the MBC (Mineral Based Composite) strengthening material and its application for strengthening concrete structures is being researched. For the strengthening material, tendencies in behaviour with changing geometrical parameters and mortar compositions are detailed. The actual tests described contribute to a larger ongoing project on Mineral Based Composites (MBC), which is a newly developed strengthening materials and system for existing concrete structures, where FRPs, mainly CFRP grids are externally bonded to the concrete surface by means of cementitious bonding agents, i.e. polymer modified mortars. Here only the strengthening system itself has been tested, the FRP material and the bonding agent together under uniaxial tension. Crack formation, crack development in CFRP reinforced concrete and the interaction between CFRP reinforcement and mortars are documented and evaluated and different mortars and grids are compared.
Dr. S. Vijaya Mohan Rao
This paper reports from a research study, aiming to investigate the crack development of a CFRP grid-reinforced mortar member tested in uniaxial tension. This composition of CFRP together with the mortar forms the MBC (Mineral Based Composite) strengthening material and its application for strengthening concrete structures is being researched. For the strengthening material, tendencies in behaviour with changing geometrical parameters and mortar compositions are detailed. The actual tests described contribute to a larger ongoing project on Mineral Based Composites (MBC), which is a newly developed strengthening materials and system for existing concrete structures, where FRPs, mainly CFRP grids are externally bonded to the concrete surface by means of cementitious bonding agents, i.e. polymer modified mortars. Here only the strengthening system itself has been tested, the FRP material and the bonding agent together under uniaxial tension. Crack formation, crack development in CFRP reinforced concrete and the interaction between CFRP reinforcement and mortars are documented and evaluated and different mortars and grids are compared.
