Report B : self-consolidating concrete (SCC) for infrastructure elements - bond, transfer length, and development length of prestressing strand in SCC.
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2012-08-01
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Edition:Final report.
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Abstract:Due to its economic advantages, the use of self-consolidating concrete (SCC) has
increased rapidly in recent years. However, because SCC mixes typically have decreased
amounts of coarse aggregate and high amounts of admixtures, industry members have
expressed concerns that the bond of prestressing strand in SCC may be compromised.
While the bond performance of prestressing strand in a new material such as SCC is an
important topic requiring investigation, the results are only applicable if the research is
completed on strands with similar bond quality as the strands used in the field. Therefore,
the objectives of this research program were to investigate the transfer and development
lengths of prestressing strand in SCC and also evaluate the effectiveness of two proposed
bond tests in determining acceptable bond quality of strand.
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