| Summary: | 碩士 === 逢甲大學 === 機械工程學系 === 88 === Concrete is the construction material that is most extensively used. Due to damage of the concrete under long-term use, inappropriate design of construction, or earthquake, the strength and stiffness of concrete structure decay. Many old buildings need rehabilitation and re-construction for security. Considering economic benefits and the community cost, the method of composite reinforced concrete is the most effective and feasible.Route Filament Winding method can offer more completely reinforcing effect than local bonded patches on the concrete columns because of its excellent performance under shear and bending stress.
This thesis includes two parts. Part one, to study the processing parameters of reinforcing concrete columns by non-adhesive filament wound glass/epoxy composites. When winding tension is 15N, winding velocity is 83.3rpm, the reinforced effect is best.
Part two, the fatigue strength of concrete columns reinforced by non-adhesive filament wound glass/epoxy composites. Composite can at most improve compression after fatigue (CAF) strength of concrete by 53.6%, when winding angle is 45 degree. Research on composite reinforced pre-fatigue damaged concrete columns. Show that composite can increase strength of concrete by 174.91%[90], 73.2%[±60], and 32.6%[±45]. Using the winding angle shown in parentheses. It proves that compression after fatigue (CAF) strength of composite/concrete columns is better than pure concrete columns. And the theoretical data also correlate well with experimental value.
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