Abstract
This study deals with experimental investigations of beam performances in a marine environment. Two kinds of concrete beams, unreinforced and reinforced with carbon plates and carbon rods, are being tested. The first one is stored in a laboratory, the other is exposed to a marine environment located in the north of France. After 12 months, all beams are tested via a four-point bending test in a laboratory. Results obtained have shown that beams stored in marine environment have a better behaviour than those stored in laboratory. It should be noted that no damage has occurred on these beams. However, we observe a significant increase of load of about 32% to 48% causing the first crack observed on the beams stored in marine environment compared to those stored in the laboratory. This means that beams in situ offer increased stiffness and a slight gain of failure loads. This may be due to the development of living organisms (in a marine environment) which acted as additional adhesive and sealing, providing a protection of concrete structures against damage.
Highlights
Port and river infrastructures are an important heritage in France, 60% of these infrastructures are over 50 yr old
When the outdoor temperature drops below À3 °C, moisture contained in the concrete’s pores freezes starting from the cladding’s largest pores
Fazli et al [18] studied the effects of marine environmental conditions on the bonded and bare surfaces of concrete slabs by means of the pull-off test
Summary
Port and river infrastructures are an important heritage in France, 60% of these infrastructures are over 50 yr old. Structures in a drawdown zone are especially susceptible to corrosion because of a strong chloride concentration as well as a minimum amount of oxygen. A high concentration of chloride ions and a sufficient amount of oxygen are present in this area causing the corrosion of reinforcements This area represents the most unfavourable zone for the lifespan of structure. Fazli et al [18] studied the effects of marine environmental conditions on the bonded and bare surfaces of concrete slabs by means of the pull-off test They observed that 12 months of exposure in a marine environment has a low effect on the epoxy performance between carbon fibrereinforced polymer composite and concrete. The average compression strength of concrete at 28 days is equal to 32.65 MPa
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.