A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Bond strength of tension lap splices in high-strength concrete beams strengthened with glass fiber reinforced polymer wraps
This paper presents the experimental results of the first phase of a study undertaken at the American University of Beirut to examine the effectiveness of fiber reinforced polymer (FRP) wraps to confine steel reinforcement in a tension lap splice region anchored in high-strength reinforced-concrete beams. Seven beam specimens were constructed. The specimens were reinforced on the tension side with three deformed bars spliced at midspan. The splice region was devoid of any transverse reinforcement to allow a full examination of the FRP wrap contribution. Glass fiber reinforced polymer (GFRP) sheets were used. The main test variables were the GFRP configuration in the splice region (one strip, two strips, or a continuous strip), and the number of layers of the GFRP wraps placed around the splice region (one layer of two layers). All GFRP wraps were U-shaped. Except for the epoxy adhesive, no other anchorage mechanism or bonding procedure was applied for the GFRP wraps on the concrete beam. Following the application of the GFRP wraps, the beams were tested in positive bending. The test results demonstrated that GFRP wraps were effective in enhancing the bond strength and ductility of failure mode of the tension lap splices, especially when continuous strips were applied over the splice region.
Bond strength of tension lap splices in high-strength concrete beams strengthened with glass fiber reinforced polymer wraps
This paper presents the experimental results of the first phase of a study undertaken at the American University of Beirut to examine the effectiveness of fiber reinforced polymer (FRP) wraps to confine steel reinforcement in a tension lap splice region anchored in high-strength reinforced-concrete beams. Seven beam specimens were constructed. The specimens were reinforced on the tension side with three deformed bars spliced at midspan. The splice region was devoid of any transverse reinforcement to allow a full examination of the FRP wrap contribution. Glass fiber reinforced polymer (GFRP) sheets were used. The main test variables were the GFRP configuration in the splice region (one strip, two strips, or a continuous strip), and the number of layers of the GFRP wraps placed around the splice region (one layer of two layers). All GFRP wraps were U-shaped. Except for the epoxy adhesive, no other anchorage mechanism or bonding procedure was applied for the GFRP wraps on the concrete beam. Following the application of the GFRP wraps, the beams were tested in positive bending. The test results demonstrated that GFRP wraps were effective in enhancing the bond strength and ductility of failure mode of the tension lap splices, especially when continuous strips were applied over the splice region.
Bond strength of tension lap splices in high-strength concrete beams strengthened with glass fiber reinforced polymer wraps
Bindungsfestigkeit von Spannungsüberlappspleißstellen in mit glasfaserverstärkten Kunststoffummantelungen verstärkten Hochleistungsbetonträgern
Hamad, Bilal S. (author) / Rteil, Ahmas A. (author) / Soudki, Khaled A. (author)
Journal of Composites for Construction ; 8 ; 14-21
2004
8 Seiten, 10 Bilder, 3 Tabellen, 13 Quellen
Article (Journal)
English
Träger (Bauwesen) , Stahlbeton , Hochleistungsbeton , mechanisches Verbinden , Überlappstoß , Zugspannung , Ummantelung , glasfaserverstärkter Kunststoff , Bindefestigkeit , Verstärkung (Festigkeit) , Duktilität , Streifen , Konfiguration , Festigkeitserhöhung , Klebverbindung , Epoxidharz , Spleiß , Überlappung
| British Library Online Contents | 2004
Tension Lap Splices Strengthened with Ultrahigh-Performance Fiber-Reinforced Concrete
| Online Contents | 2015
Tension Lap Splices Strengthened with Ultrahigh-Performance Fiber-Reinforced Concrete
| British Library Online Contents | 2015