The Torsional and Shear Behavior of Steel Fiber Reinforced RC Members

AYDIN, Abdulkadir Cüneyt; KILIÇ, Mahmut; MAALI, Mahyar; BAYRAK, Barış; TUNÇ, Erkan

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The Torsional and Shear Behavior of Steel Fiber Reinforced RC Members

Abdulkadir Cüneyt AYDIN

AYDIN, Abdulkadir Cüneyt

,

,

,

y

05 jul 2021

Architecture, Civil Engineering, Environment

Volumen 14 (2021): Edición 2 (Junio 2021)

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Categoría del artículo: research-article

Publicado en línea: 05 jul 2021

Páginas: 47 - 65

Recibido: 29 sept 2020

Aceptado: 01 may 2021

DOI: https://doi.org/10.21307/acee-2021-015

Palabras clave
Behavior, Interaction, Reinforced concrete, Shear, Steel fiber reinforcement, Torsion

© 2019 Abdulkadir Cüneyt Aydin et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

The geometry and reinforcement details a) tested beams b) tested column specimens (all units are in mm)

The stress-strain curves of the reinforcements

Test setup a) torsion b) four-point bending c) three-point bending d) overhanging

The test set-up of axial loading (all units are in mm)

Torsional moment-twist angle relationship

Cracking pattern at failure a) T-Reference b) T60SF c) T30SF beams

Influence of shear index on the shear capacity of beams by different codes

Energy dissipation capacity of tested beams

Load displacement relationship a) three-point and b) four-point bending c) overhanging beam

Crack pattern at failure a) FC-Reference b) FC-30SF c) FC60SF d) F3-30SF e) F3-60SF f) F4-30SF g) F4-60SF

The interaction curves of tested column Bending moment-axial load curves of column

The values defined by standards and experimental results

Specimen	Yield force (kN)	Yield deflection (mm)	Peak force (kN)	Peak deflection (mm)
FC-Reference	170.02	3.31	267.95	37.58
FC-30SF	114.18	5.31	257.47	26.79
FC-60SF	132.31	5.51	218.24	12.52
F3-30SF	60.11	2.22	104.36	9.66
F3-60SF	73.51	1.74	113.10	12.80
F4-30SF	122.12	3.27	196.23	12.89
F4-60SF	128.13	4.53	204.37	20.11

Physical properties of steel fiber


Length (mm)	30	Tensile strength (MPa)	1100
Diameter (mm)	0.75	Aspect ratio	0.40

Ultimate load and moment values of tested columns

Group	Specimen	Ultimate Load (kN)	Ultimate Moment (kNm)
Concentric	AL-Reference-0	122.6	0
	AL-Reference-10	99.6	0.99
	AL-Reference-20	95.7	1.91
	AL-Reference-30	92.8	2.77
	Theoretical Result	0	2.78
Eccentric	AL-30SF-0	217.9	0
	AL-30SF-10	140.5	1.41
	AL-30SF-20	105.9	2.12
	AL-30SF-30	99.7	2.99
	Theoretical Result	0	2.78
Eccentric	AL-60SF-0	142.9	0
	AL-60SF-10	99.2	0.99
	AL-60SF-20	97.1	1.94
	AL-60SF-30	93.8	2.81
	Theoretical Result	0	2.79

Concrete mixture

kg/m³	First Group	Second Group	Third Group
Fine aggregate (0-12mm)	1420	1420	1420
Coarse aggregate (12-28 mm)	510	510	510
Cement	320	320	320
Admixture	6.4	6.4	6.4
Steel fibers	—	30	60
Water/Cement ratio	0.31	0.31	0.31
Compressive strength (MPa)	34	32.6	34.4
Flexural strength (MPa)	59.0	58.3	58.6
Splitting tensile strength (MPa)	32.1	33.2	42.4

The comparison of experimental and numerical results

Specimens	T_U-Exp	T_{u-mode II}/T_u-exp	T_TS-2018/T_U-Exp	T_AC318-14/T_U-Exp	T_Eurocode-2/T_U-Exp	T_AS3600/T_U-Exp	T_BS8110/T_U-Exp	T_Hsu/T_U-Exp	T_Rauch/T_U-Exp
T-Reference	5.37	-	0.67	0.67	0.70	0.86	0.47	1.12	1.24
T30SF	7.50	0.58	0.48	0.48	0.50	0.62	0.34	0.79	0.89
T60SF	11.06	0.40	0.33	0.32	0.34	0.42	0.23	0.55	0.60

The experimental results

Specimens	V_u-Exp (kN)	V_n-ACI (kN)	$\frac{V (n - A C I) /}{V (u - E x p)}$	$\frac{V_{n - E U 2}}{(k N)}$	$\frac{V (n - E U 2) /}{V (u - E x p)}$	Energy Dissipation Capacity (kNmm)
FC-Reference	267.95	64.89	0.24	72.84	0.27	1302.7
FC-30SF	257.47	64.19	0.25	72.84	0.28	5726.1
FC-60SF	218.24	65.09	0.30	72.84	0.33	1122.3
F3-30SF	104.36	64.19	0.62	72.84	0.70	266.3
F3-60SF	113.10	65.09	0.58	72.84	0.64	226.4
F4-30SF	196.23	64.19	0.33	72.84	0.37	887.6
F4-60SF	204.37	65.09	0.32	72.84	0.36	1313.8

Summary of tested specimens

Specimens	Steel Fibers (kg/m³)	Loading Type
T-Reference	—	Torsion
T30SF	30	Torsion
T60SF	60	Torsion
FC-Reference	—	Overhanging
FC-30SF	30	Overhanging
FC-60SF	60	Overhanging
F3-30SF	30	Three-point bending
F3-60SF	60	Three-point bending
F4-30SF	30	Four-point bending
F4-60SF	60	Four-point bending
AL-Reference-0	—	Axial load without eccentricity
AL-Reference-10	—	Axial load with 10 mm eccentricity
AL-Reference-20	—	Axial load with 20 mm eccentricity
AL-Reference-30	—	Axial load with 30 mm eccentricity
AL-30SF-0	30	Axial load without eccentricity
AL-30SF-10	30	Axial load with 10 mm eccentricity
AL-30SF-20	30	Axial load with 20 mm eccentricity
AL-30SF-30	30	Axial load with 30 mm eccentricity
AL-60SF-0	60	Axial load without eccentricity
AL-60SF-10	60	Axial load with 10 mm eccentricity
AL-60SF-20	60	Axial load with 20 mm eccentricity
AL-60SF-30	60	Axial load with 30 mm eccentricity

Chemical, physical and mechanical properties of the cement

Chemical properties (%)		Physical and mechanical properties
SO₃	2.84	2 days Compressive strength (MPa)	27.90
MgO	2.58	28 days Compressive strength (MPa)	58.00
CaO	63.65	Initial setting time (min)	151
Al₂O₃	4.48	Final setting time (min)	191
K₂O	0.62	Specific gravity (g/cm³)	3.12
SiO₂	18.10	Specific surface (cm²/g)	3690
Na₂O	0.21	Total volume exp. (mm)	1.0
Fe₂O₃	3.09	Water requirement of cement (%)	29.5
CI-	0.015	Fineness (%)	7.15

The Experimental results of torsional tests

Specimens	T_u (kNm)	θ_u (deg/m)	T_cr (kNm)	θ_cr (deg/m)	θ_yeld (deg/m)	μθ	Energy Dissipation Capacity (kN.deg)
T-Reference	5.37	2.55	0.29	1.60	2.14	1.19	12.02
T30SF	7.50	3.06	0.50	1.62	2.46	1.24	20.17
T60SF	11.06	5.58	0.60	1.31	4.30	1.30	54.72

Idioma:: Inglés

Calendario de la edición:: 4 veces al año
Temas de la revista:: Arquitectura y diseño, Arquitectura, Arquitectos, edificios

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The Torsional and Shear Behavior of Steel Fiber Reinforced RC Members

Categoría del artículo: research-article

Publicado en línea: 05 jul 2021

Páginas: 47 - 65

Recibido: 29 sept 2020

Aceptado: 01 may 2021

DOI: https://doi.org/10.21307/acee-2021-015

Palabras clave
Behavior, Interaction, Reinforced concrete, Shear, Steel fiber reinforcement, Torsion

© 2019 Abdulkadir Cüneyt Aydin et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1.

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Figure 12.

Figure 13.

The values defined by standards and experimental results

Physical properties of steel fiber

Ultimate load and moment values of tested columns

Concrete mixture

The comparison of experimental and numerical results

The experimental results

Summary of tested specimens

Chemical, physical and mechanical properties of the cement

The Experimental results of torsional tests

The Torsional and Shear Behavior of Steel Fiber Reinforced RC Members

Abdulkadir Cüneyt AYDIN

Mahmut KILIÇ

Mahyar MAALI

Barış BAYRAK

Erkan TUNÇ

Categoría del artículo: research-article

Publicado en línea: 05 jul 2021

Páginas: 47 - 65

Recibido: 29 sept 2020

Aceptado: 01 may 2021

DOI: https://doi.org/10.21307/acee-2021-015

Palabras claveBehavior, Interaction, Reinforced concrete, Shear, Steel fiber reinforcement, Torsion

© 2019 Abdulkadir Cüneyt Aydin et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Figure 6.

Figure 7.

Figure 8.

Figure 9.

Figure 10.

Figure 11.

Figure 12.

Figure 13.

The values defined by standards and experimental results

Physical properties of steel fiber

Ultimate load and moment values of tested columns

Concrete mixture

The comparison of experimental and numerical results

The experimental results

Summary of tested specimens

Chemical, physical and mechanical properties of the cement

The Experimental results of torsional tests

Palabras clave
Behavior, Interaction, Reinforced concrete, Shear, Steel fiber reinforcement, Torsion