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Title |
Experimental Study on Structural Performance of Recycled Coarse Aggregate Concrete Confined by Steel Spirals
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Keywords |
순환골재 ; 횡구속 콘크리트 ; 나선철근 ; 응력-변형률 관계 ; 강도증진 Recycled aggregate ; Confined concrete ; Spiral reinforcement ; Stress-strain relationship ; Strength enhancement |
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Abstract |
This paper estimated the structural behavior of recycled aggregate concrete confined with spiral reinforcement. The main test parameter was designed to be the type of aggregates and the steel ratio of spirals. A total of 18 specimens were cast and tested in this study. All the specimens had a diameter of 150mm and a height of 300mm. The specimens can be divided into two groups, based on the type of coarse aggregate used. The ratio of spiral reinforcement was varied from 0 % to 1.75%. To measure the axial and lateral deformations of the specimens, a total of six linear variation displacement transducers (LVDTs) were installed at each specimen. Furthermore strain gauges were also attached to the steel spirals to obtain the strain of spiral reinforcements. From the experimental results, the structural performance of recycled aggregate concrete specimens confined by steel spirals was similar to that of natural aggregate concrete specimens regardless of the ratio of spiral reinforcement.
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