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Effect of crack control approaches around opening on out-of-plane flexural response of walls

Effect of crack control approaches around opening on out-of-plane flexural response of walls This study aimed to investigate the effect of different crack-control devices at the re-entrant corners of openings on the out-of-plane flexural performance of reinforced concrete walls. The conventional diagonal bar arrangement, stress dispersion shell plate, and crack-control strip were arranged at each corner of the opening to control the localized diagonal tension cracks at the re-entrants. Four wall specimens with window openings were tested under constant axial loads and cyclic out-of-plane lateral loads. The actual cover thickness was considered in the prediction of the flexural strength of the walls. The out-of-plane flexural lateral load – lateral displacement response of the walls was not dependent on the crack-control devices but was appreciably affected by the cover thickness. An increase in the cover thickness leads to a decrease in the lateral load capacity and ductility. The out-of-plane moment capacity of walls could be conservatively assessed by a conventional flexural analysis procedure, such as the equivalent stress block for reinforced concrete structures, regardless of the consideration of crack-control devices. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Structural Integrity and Maintenance Taylor & Francis

Effect of crack control approaches around opening on out-of-plane flexural response of walls

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Effect of crack control approaches around opening on out-of-plane flexural response of walls

Abstract

This study aimed to investigate the effect of different crack-control devices at the re-entrant corners of openings on the out-of-plane flexural performance of reinforced concrete walls. The conventional diagonal bar arrangement, stress dispersion shell plate, and crack-control strip were arranged at each corner of the opening to control the localized diagonal tension cracks at the re-entrants. Four wall specimens with window openings were tested under constant axial loads and cyclic...
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Publisher
Taylor & Francis
Copyright
© 2023 Korea Institute for Structural Maintenance and Inspection
ISSN
2470-5322
eISSN
2470-5314
DOI
10.1080/24705314.2023.2165467
Publisher site
See Article on Publisher Site

Abstract

This study aimed to investigate the effect of different crack-control devices at the re-entrant corners of openings on the out-of-plane flexural performance of reinforced concrete walls. The conventional diagonal bar arrangement, stress dispersion shell plate, and crack-control strip were arranged at each corner of the opening to control the localized diagonal tension cracks at the re-entrants. Four wall specimens with window openings were tested under constant axial loads and cyclic out-of-plane lateral loads. The actual cover thickness was considered in the prediction of the flexural strength of the walls. The out-of-plane flexural lateral load – lateral displacement response of the walls was not dependent on the crack-control devices but was appreciably affected by the cover thickness. An increase in the cover thickness leads to a decrease in the lateral load capacity and ductility. The out-of-plane moment capacity of walls could be conservatively assessed by a conventional flexural analysis procedure, such as the equivalent stress block for reinforced concrete structures, regardless of the consideration of crack-control devices.

Journal

Journal of Structural Integrity and Maintenance – Taylor & Francis

Published: Jan 2, 2023

Keywords: Crack-control device; opening; wall; out-of-plane flexure; cover thickness

References

  • Another look at cracking and crack control in reinforced concrete
  • Sine field crack prevention performance evaluation of stress-dispersion curved plate, structural engineering materials lab of Seoul National University, Seoul, Korea, Technical Report
  • Evaluation of crack healing potential of cement mortar incorporated with blue-green microalgae
  • Control of cracking of concrete dur-ing construction