Experimental Study of RC Beams Strengthened with Prestressed near Surface Mounted Helical Rib Steel Wire

Abstract:

A new reinforcement technique with prestressed helical rib steel wires is presented, and one control beam, three strengthened beams under monotonous loads are tested. The flexural capacity, load-deflection relation, cracks and deformation of reinforced concrete beams are systematically studied under the same initial prestress level and amount of reinforcement, different groove size. The test results indicate that the strengthening technique could significantly improve the first-crack load, steel-yielding load, ultimate load of the beams, and improves the service performance of the strengthened beams. The high performance of the helical rib steel wires is allowed for a better utilization. The results provide a reference for engineering applications.

• Periodical: Applied Mechanics and Materials (Volumes 204-208)
• Pages: 1189-1193
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.204-208.1189
• Online since: October 2012
• Authors: Chun Sheng Zhang, Hui Min Hao, Mei Xiang Zhang, Ya Hong Ding
• Keywords: Concrete Beam, Experiment, Helical Rib Steel Wire, Near Surface Mounted, Prestressed

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