Behavior of hollow core slabs strengthened by NSM CFRP plates subjected to repeated loading

This paper presents the findings of an experimental study of four hollow thick slabs. Near-surface mounted carbon fiber reinforced polymers (NSM-FRP) plates have been used to reinforce the slabs under repeated loading. Two series included four specimens; the first series had two control slabs. The s...

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Bibliographic Details
Main Authors: Jasim, Namaa R., Daud, Raid A.
Format: Conference Proceeding
Language:English
Subjects:
Bearing strength
Carbon fiber reinforced plastics
Failure modes
Fiber reinforced polymers
Grooves
Load carrying capacity
Plates
Repeated loading
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Summary:This paper presents the findings of an experimental study of four hollow thick slabs. Near-surface mounted carbon fiber reinforced polymers (NSM-FRP) plates have been used to reinforce the slabs under repeated loading. Two series included four specimens; the first series had two control slabs. The second series had two strengthened slabs, where one slab was tested under monotonic loading and three other slabs were tested under repeated loading. The main variables are the different configurations of CFRP employed in tension reign and the effect of repeated loading in the slabs. The experimental results showed that the three thick slabs with hollow core tested under repeated load had turned from flexural failure mode to shear-flexure failure mode, and the slab with two grooves had failed with a higher number of cycles (56 cycles) compared to four grooves. Also, the NSM-CFRP strengthening approach improved load carrying capacity and stiffness with different failure loads.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0193577