COLUMN REPAIR AND CONFINEMENT
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Carbon fiber is a popular method of repair for concrete columns and other structural components. These components are constructed with rebar to provide the necessary tensile capacity for the intended loads. When components have begun to deteriorate or when increased load carrying capacities are required, carbon fiber can be used to add additional tensile capacity to these components allowing them to carry greater loads.
Wrapping columns horizontally with the SRS-600UNI will provide additional confining strength and therefore an added load carrying capacity. SRS-660BI can also be used but a single layer will provide less confining strength since only half of the weight of fabric is wrapping the column. The UNI only needs to be lapped back onto itself where each wrap meets. When the BI is used and vertical strengthening is required, each horizontal joint also needs to be lapped. On columns where both vertical and horizontal strengthening is required but the bidirectional does not provide a sufficient increase in the capacity, two layers of the SRS-600UNI can also be use and will provide increases capacities for the component.
On columns where both vertical and horizontal strengthening is required but the bidirectional does not provide a sufficient increase in the capacity, two layers of the SRS-600UNI can also be use and will provide increased capacities for the component.
Types of Column Failure
Buckling
Compression
Shear
When components have begun to deteriorate or when increased load carrying capacities are required, carbon fiber can be used to add additional tensile capacity to these components allowing them to carry greater loads.
