Transfer length in prestressed self-consolidating concrete box and I-girders

Andrew M. Pozolo, Bassem Andrawes

Research output: Contribution to journalArticlepeer-review

Abstract

Self-consolidating concrete (SCC) has garnered significant interest since first emerging as a structural material in the late 1980s. Concern about early-age bond behavior between SCC and prestressing strands, however, has been a limiting factor in using the material in prestressed members. This paper aims to investigate the transfer length of 12.7 mm (0.5 in.) diameter steel strands in fill- scale prestressed box and I-beams cast with SCC. This paper first presents the experimental results of pullout tests on steel strands embedded in SCC and conventional concrete (CC) blocks. Next, the experimental results of transfer length tests on two box beams and two I-beams are presented for 1, 3, 7, 14, and 28 days after casting. The results are compared to current design codes and transfer lengths predicted by other researchers.

Original languageEnglish (US)
Pages (from-to)341-349
Number of pages9
JournalACI Structural Journal
Volume108
Issue number3
StatePublished - May 1 2011

Keywords

  • Prestressed girders
  • Pullout
  • Self-consolidating concrete
  • Transfer length

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

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