Abstract
Paper presents the results of an experimental investigation addressing the variations in transfer lengths in two types of carbon fiber reinforced polymer (CFRP) prestressing strands. Parameters such as the level of prestress at relaase, creep, and the rate and method of release of prestress are considered. Eight double-T (DT) prestressed girders were prestressed with CFRP leadline tendons while the other four DT girders were prestressed with carbon fiber composite cable (CFCC) strands. Based on the experimental results, a proposed modification on an available model for predicting the transfer length of CFRP leadline tendons and CFCC strands is suggested. A comparison of results for the transfer length obtained using the proposed modification with those of others is made.
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