Strengthening Masonry Arch Bridges Tunnels & Buildings using Grouted Tie Bars

Masonry arch bridges, tunnels and buildings are strengthened using retrofit tie bars grouted through successive structural walls or layers. This video shows the installation process for inserting grout bonded helical ties as part of an engineered bridge strengthening scheme that is enhanced by the provision of a matrix reinforcement cage. Grout ties are also deal for use to retain and structurally repair a brick or masonry wall that is coming away from the main structure of a building.

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