Evaluation of the effects of high-volume fly ash on the flexural behavior of reinforced concrete beams

Yoo, Sung-Won; Ryu, Gum-Sung; Choo, Jinkyo F.

doi:10.1016/j.conbuildmat.2015.05.021

Cited by 39 publications

(17 citation statements)

References 8 publications

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“…Note that the bilinear model was adopted for the tensile reinforcement in the analytical model. e predicted values produced by the static analysis process proposed by Yoo et al [27] are seen to be in good agreement with the experimental results. For the loadconcrete strain curves plotted in Figure 13(c), the analysis ts accurately the experimental results until cracking, but the postcracking strain of the analysis is seen to deviate from the test data.…”

Section: Comparison Of Analytical and Experimental Resultssupporting

confidence: 78%

“…Considering the strain compatibility conditions, the strain in the compressive zone of the section is increased stepwise, and the corresponding stresses in steel and concrete, the exural strength, the curvature, and the deection are computed at each step. For the reinforced concrete cross section of height h and width b shown in Figure 11, the strain of the tensile steel (ε s ) can be determined iteratively through equilibrium by assuming the Advances in Civil Engineering strain at the top of the compressive zone and the strain at the bottom of concrete as follows [27]. Note that, in Figure 11, c is a ratio expressing the position of the compressive force C c in the compressive zone with respect to the position of the neutral axis (c), and ε cr is the crack strain of concrete:…”

Section: Analytical Model For Predicting the Low-cycle Fatigue Behavimentioning

confidence: 99%

“…Strain compatibility of RC beam cross section for analysis[27]: (a) cross section; (b) strain distribution; (c) stress distribution.…”

mentioning

confidence: 99%

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Low‐Cycle Flexural Fatigue Behavior of Concrete Beam Reinforced with Hybrid FRP‐Steel Rebar

Choo

Choi

Kwon

et al. 2018

Advances in Civil Engineering

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Studies examined experimentally the flexural behavior of concrete beams reinforced with the hybrid FRP-steel rebar but very few among them evaluated their fatigue performance. In this study, the fatigue test has been performed, and an analytical model for simulating the flexural fatigue behavior of the concrete beam reinforced with the hybrid bar considering its postyielding behavior is developed. A formula relating the postyielding fatigue strain of the rebar to the number of the fatigue cycle is suggested and used in the proposed procedure. The method simulating the low-cycle behavior of the reinforced concrete beam is found to be satisfactory and can predict the number of cyclic loading to failure.

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Section: Comparison Of Analytical and Experimental Resultssupporting

confidence: 78%

Section: Analytical Model For Predicting the Low-cycle Fatigue Behavimentioning

confidence: 99%

See 1 more Smart Citation

Low‐Cycle Flexural Fatigue Behavior of Concrete Beam Reinforced with Hybrid FRP‐Steel Rebar

Choo

Choi

Kwon

et al. 2018

Advances in Civil Engineering

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“…HVFA concrete has been used in the study of the concrete component [31] and the field application [32]. The application of HVFA concrete in the real structure is on the way.…”

Section: Resultsmentioning

confidence: 99%

A Review on Early Age and Long-term Compressive Strength of High-volume Fly Ash Concrete

2018

MATEC Web Conf.

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Fly ash is a by-product of the combustion of the coal-fired electric power stations, and disposal of fly ash has been one of the environmental challenges. Much of the studies have been focused on the mechanical property of fly ash concrete. It is no doubt that the use of high-volume fly ash as a partial replacement of cement is also one of the effect way to utilize fly ash. It is known that the compressive strength of fly ash concrete is lower than that of ordinary concrete at early age, especially for high-volume fly ash concrete. It is urgent for engineers to consider the compressive strength of high-volume fly ash concrete at different curing age. In this review, the compressive strength of high-volume fly ash concrete in various literature was reported and then analyzed. Furthermore, the proposal of the utilization of high-volume fly ash concrete is provided.

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“…The investigation of fly-ash replacement level on the shear strength of high-volume fly-ash concrete beams and found that a HVFAC mix with a 50 % replacement of fly ash has a higher shear strength compared with conventional concrete. [1][2][3][4] Srinivas et al, 5 M. Arezoumandi et al 6 and Yoo et al 7 studied the flexural behavior of RCC beams containing high-volume fly ash and they con-cluded that even though a slight decrease in compressive strength when the cement being replaced up to 50 % with fly ash, which is still more than the target mean strength so that a concrete can be used for various structural applications in the construction industry. C. D. Atis 8 carried out a laboratory investigation of the strength properties of a high-volume fly-ash roller compacted and workable concrete.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of beam-column joints made with high-volume fly-ash concrete subjected to reversed lateral loading

Divahar¹,

Joanna²

2018

Mater. Tehnol.

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This paper presents the results of an experimental investigation carried on exterior beam-column joints made with high-volume fly-ash concrete, containing fly-ash as a 50 % replacement for cement. Six real-scale joints, two made with a conventional mix and four with fly-ash concrete, were tested under a constant axial load and reversed lateral loading, which simulates the earthquake forces. The six joints exhibited the same failure mode, which involved concrete crushing at the panel joint and minor cracks were noticed along the height of the column. The seismic characteristics, like hysteretic response, peak load displacement, ductility, stiffness degradation and energy absorption, were obtained both with the conventional and fly-ash concrete beam-column joints. The results demonstrate that the specimens made with fly-ash concrete are able to attain higher loads than the conventional specimens. The experiments show that the strength of beam-column joints made with high-volume fly-ash concrete is less at earlier stages and it gains more strength at later stages than the conventional concrete.

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Evaluation of the effects of high-volume fly ash on the flexural behavior of reinforced concrete beams

Cited by 39 publications

References 8 publications

Low‐Cycle Flexural Fatigue Behavior of Concrete Beam Reinforced with Hybrid FRP‐Steel Rebar

Low‐Cycle Flexural Fatigue Behavior of Concrete Beam Reinforced with Hybrid FRP‐Steel Rebar

A Review on Early Age and Long-term Compressive Strength of High-volume Fly Ash Concrete

Experimental investigation of beam-column joints made with high-volume fly-ash concrete subjected to reversed lateral loading

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