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Cracking behavior of basalt fibre reinforced polymer‐reinforced concrete: An approach for the determination of crack spacing and crack width
Author(s) -
Hofmann Sebastian,
Tran Ngoc Linh,
Proske Tilo,
Graubner CarlAlexander
Publication year - 2020
Publication title -
structural concrete
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.912
H-Index - 34
eISSN - 1751-7648
pISSN - 1464-4177
DOI - 10.1002/suco.202000156
Subject(s) - serviceability (structure) , materials science , cracking , fibre reinforced plastic , basalt fiber , reinforced solid , reinforced concrete , composite material , structural engineering , fiber , engineering
The limitation of the crack width is of central importance for the design in the serviceability limit state. For FRP‐reinforced concrete members, the crack width has to be limited for service condition in use and not due to corrosion protection. In this paper, an experimental program of pull‐out tests and slender concrete cylinders with basalt fiber‐reinforced polymer rebars under centric tension load is presented. The used basalt fiber‐reinforced polymer rebars are sand coated and have in addition a helically wrapped thread for a decent profiling. Equations to calculate crack spacing and crack width of FRP‐reinforced concrete is derived and calibrated with the obtained experimental results. Finally, the equations are verified with experimental data from other authors and a crack model is given for reinforced concrete members with FRP rebars with a helically wrapped and sand coated surface.