Role of longitudinal reinforcement on the behavior of under reinforced concrete beams subjected to fatigue loading
Source abstract
Abstract
Abstract In this work, the role of steel reinforcement in under reinforced concrete beams when subjected to flexural fatigue loading is studied using the acoustic emission (AE) technique. Three-point bend notched beams of three different sizes and with varying reinforcement ratios are subjected to step-wise increasing variable amplitude fatigue loading. The crack mouth opening displacement (CMOD) and AE parameters are analyzed to study the evolution of damage, load carrying and failure mechanisms in under reinforced concrete beams. It is concluded that the presence of reinforcement substantially increases the fatigue life. Further, the CMOD could be used as a criterion for failure in reinforced concrete beams under fatigue loading.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Structural Response to Dynamic Loads · Structural Behavior of Reinforced Concrete · Ultrasonics and Acoustic Wave Propagation
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (13)
Show source-provided references
1. A study on the fatigue strength behavior of reinforced concrete structures10.1016/0308-0161(89)90124-5 ↗
2. Fracture in reinforced concrete beams under repeated loads10.1016/0013-7944(90)90205-U ↗
3. Energy dissipation in RC beams under cyclic loadings10.1016/0013-7944(91)90033-W ↗
4. Nonlinear analysis of RC beam subject to cyclic loading10.1061/(ASCE)0733-9445(2001)127:12(1436) ↗
5. Softening behavior of reinforced concrete beams under cyclic loading10.1016/j.ijsolstr.2003.12.015 ↗
6. Mechanical damage of ordinary or prestressed reinforced concrete beams under cyclic bending10.1016/j.engfracmech.2004.10.005 ↗
7. Fatigue deterioration of quasi-brittle materials10.1016/j.ijfatigue.2018.09.006 ↗
8. Analysis of fatigue crack growth in reinforced concrete beams10.1617/s11527-013-0054-0 ↗
9. Fatigue behavior of reinforced concrete haunched beams without stirrups10.14359/51687411 ↗
10. Nagesh H, Rao GA. Fatigue behavior of lightly reinforced concrete beams in flexure due to overload. In: Proceedings of the ninth international conference on fracture mechanics of concrete and concrete structures-FraMCoS 9, IA-FraMCoS; 2016. p. 1–12.
11. Use of acoustic emissions in flexural fatigue crack growth studies on concrete10.1016/j.engfracmech.2012.03.001 ↗
12. Damage limit states of reinforced concrete beams subjected to incremental cyclic loading using relaxation ratio analysis of ae parameters10.1016/j.conbuildmat.2012.02.057 ↗
13. Diagnostic of fatigue damage severity on reinforced concrete beam using acoustic emission technique10.1016/j.engfailanal.2013.07.015 ↗