Abstract
Basalt polymers are rather new materials for civil engineering; therefore, identification of peculiarities and limitations of application of such polymers in concrete structures (particularly bridges) is of vital importance. This paper experimentally investigates deformation behaviour and cracking of flexural elements, which are predominant parameters governing serviceability of the bridges. Unlike a common practice, the present study is not limited by the analysis of concrete beams reinforced with the polymer bars; it also considers effectiveness of basalt fibre reinforced polymer sheets for repairing the beams. The analysis has revealed that a combination of the high strength and elasticity polymer materials governs the effective repair of the beams by significantly increasing (up to 40%) the structural stiffness.
Highlights
Concrete is the most widely used material in civil engineering
Properly built and maintained reinforced concrete (RC) structures must serve for centuries, but, in reality, those structures suffer from aggressive environmental conditions: salt- or alkali-solution ingress, chloride attack, tidal waves, earthquake, etc
Sand coated Basalt fibre reinforced polymer (BFRP) bars Rockbar (basalt reinforcement bars from the Limited Liability Company Galen (Russia)) with nominal diameters of 12 mm and 16 mm were used for reinforcing the tensile zone, whereas the compressive reinforcement was made of steel bars (Ø6 mm)
Summary
Properly built and maintained reinforced concrete (RC) structures must serve for centuries, but, in reality, those structures suffer from aggressive environmental conditions: salt- or alkali-solution ingress, chloride attack, tidal waves, earthquake, etc These factors cause cracking of concrete, corrosion of steel reinforcement, and, a complete deterioration of buildings. The current study is dedicated to experimental investigation of RC beams with internal and external BFRP reinforcement. The present manuscript investigates deformation behaviour and cracking of flexural elements, i.e., the predominant parameters governing serviceability of the concrete bridges, reinforced with BFRP materials (Timinskas et al 2013). The study is not limited by the analysis of the RC beams with internal BFRP bars; it investigates effectiveness of application of external BFRP sheets for repairing the beams. At the 1st stage, the beams were tested until failure, after that, strengthened with BFRP sheets
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
