Title:
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Flexural post-cracking creep behaviour of macro-synthetic and steel fiber reinforced concrete
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Author:
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Pujadas Álvarez, Pau; Blanco Álvarez, Ana; Pialarissi Cavalaro, Sergio Henrique; Fuente Antequera, Albert de la; Aguado de Cea, Antonio
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental; Universitat Politècnica de Catalunya. EC - Enginyeria de la Construcció |
Abstract:
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In this paper the post-cracking creep behaviour of FRC beams under flexural load is evaluated in order to determine whether under certain loading conditions plastic fibres may be safely used in the long-term without compromising the serviceability requirements. For that, an experimental program was conducted that involved the testing of 30 beams with dimensions of 150 × 150 × 600 mm reinforced either with plastic or steel fibres. The creep test setup consisted in a four-point bending test in previously cracked beams up to crack widths of 0.25, 1.50 and 2.50 mm. The sustained load ranged between 50 and 60 % of the cracking load and was applied by means of a lever system. The sustained load was controlled throughout the test with a load cell. The tests were performed under two different environmental conditions during 6 months. Despite the large deformations exhibited by plastic fibres under sustained load over time, their use as reinforcement should not be discarded as long as the effects of creep are considered in the design. |
Abstract:
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Peer Reviewed |
Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó -Fiber-reinforced concrete--Mechanical properties -Plastic fibre -Steel fibre -Time dependent behaviour -CreepSecondary creep -Tertiary creep -Construcció en formigó armat amb fibres |
Rights:
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Document type:
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Article - Published version Conference Object |
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