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Abstract:
The bond characteristics between self-compacting concrete and reinforcement are worth researching due to material constitution and no need of vibration. The local bond characteristics between self-compacting concrete and reinforcement were analyzed experimentally and test parameters included self-compacting concrete strength and loading pattern. The tests were conducted on ten specimens under monotonic loading and ten specimens under repeated loading, including sixteen self-compacting concrete specimens and four common concrete specimens. Reinforcement of all specimens was pulled out by electro hydraulic servo device. The local bond stress between self-compacting concrete and reinforcement was analyzed including bond stress uneven coefficient and residual bond stress distributions. The bond stress distribution curve shows wavy under repeated while single crest under monotonic load. The bond stress distribution is more uneven with concrete strength increasing but more even with cyclic loading and number of cycles increasing. When each level unloading, the residual bond stress is larger with concrete strength increasing and its distribution range transfers to free end with cyclic load and number increasing. The bond performance between self-compacting concrete and reinforcement is a little better than normal concrete. Based on the results, the regression equations for local bond stress position function under monotonic loading and repeated loading were obtained and were validated by test results. The regression equations agree with the test results.
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Journal of Building Structures
ISSN: 1000-6869
CN: 11-1931/TU
Year: 2013
Issue: 6
Volume: 34
Page: 143-152
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 5
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