Flexural creep of carbon-TRC beams

This work aims to investigate the behavior of textile reinforced concrete (TRC) beams subjected to sustained loads. Four-point bending tests were carried out in members with I-sections and made with textiles with various coating conditions. The testing protocol included pre-cracking, 3-month creep,...

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Bibliographic Details
Published in:Composite structures 2022-12, Vol.302, p.116232, Article 116232
Main Authors: Goliath, Kíssila B., Cardoso, Daniel C.T., Silva, Flávio A.
Format: Article
Language:English
Subjects:
Analytical modeling
Carbon fiber
Creep
Textile-reinforced concrete
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Summary:This work aims to investigate the behavior of textile reinforced concrete (TRC) beams subjected to sustained loads. Four-point bending tests were carried out in members with I-sections and made with textiles with various coating conditions. The testing protocol included pre-cracking, 3-month creep, 10-day recovery and post-creep monotonic up to failure. Deflections and crack widths were measured during each stage and an analytical model was used to estimate the individual responses of textile and matrix-reinforcement bond to sustained loads. The results indicate that the creep deformation of styrene-butadiene rubber coated textile is by far greater than its sand-coated counterpart and textiles made of acrylate and epoxy. It is also seen that the increases in textile compliance were not accompanied by increases in crack width, as a consequence of an apparent bond improvement at early ages. Finally, no loss of capacity was observed in post-creep tests.
ISSN:0263-8223
1879-1085
DOI:10.1016/j.compstruct.2022.116232