Effect of Coarse Aggregate Concentration on the Mechanical Properties and Bond-Slip Behavior Between the Low Strength Concrete and Plain Rebar

Sidar Nihat Bicakci; Osama Abo Kaf; Hasan Nuri Turkmenoglu; Servan Baran; Hakan Nuri Atahan

doi:10.1007/978-3-031-32519-9_102

Effect of Coarse Aggregate Concentration on the Mechanical Properties and Bond-Slip Behavior Between the Low Strength Concrete and Plain Rebar

Sidar Nihat Bicakci^*, Osama Abo Kaf, Hasan Nuri Turkmenoglu, Servan Baran, Hakan Nuri Atahan

^*Corresponding author for this work

Department of Civil Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Citation (Scopus)

Abstract

Reinforced concrete structures still exist with low-strength class in which plain reinforcement (rebar) is used. The coarse aggregate concentration (CAC) in such concrete may also vary significantly. Considering such structures and their reinforced concrete bearing systems, in this study, eight different mixtures with 0.9 and 1.2 water/cement ratios (W/Cm) and 4 different CACs (60%-40%-20%-0%) were produced. Total aggregate volume fraction was kept constant in all mixtures. Modulus of elasticity (MOE), compressive, and splitting tensile strength (STS) tests were performed at 28 days. Bond strength and bond-slip behavior were investigated by pull-out tests. Results showed that the compressive strength ranged from 7.9 to 23.4 MPa. While the MOE improved by about 34%, the compressive strength decreased by around 30% when the CAC was increased from 0% to 60% in the concrete with 1.2 W/Cm. With an increase in CAC, compressive strength and MOE increased in the mixtures with W/Cm of 0.9. The presence of coarse aggregate increased STS in the concrete with W/Cm of 1.2, while the mixture with CAC of 60% having W/Cm of 0.9 had the lowest STS. In terms of the bond strength and residual bond stress between the concrete and plain rebar, the mixtures without coarse aggregate have performed worst for both W/Cm. Additionally, when the CAC was increased from 0% to 40%, in the mixtures with W/Cm of 0.9, almost 60% improvement in bond strength was seen. Moreover, bond-slip behaviors of the mixtures were evaluated.

Original language	English
Title of host publication	Building for the Future
Subtitle of host publication	Durable, Sustainable, Resilient - Proceedings of the Symposium 2023 - Volume 1
Editors	Alper Ilki, Derya Çavunt, Yavuz Selim Çavunt
Publisher	Springer Science and Business Media Deutschland GmbH
Pages	1020-1029
Number of pages	10
ISBN (Print)	9783031325182
DOIs	https://doi.org/10.1007/978-3-031-32519-9_102
Publication status	Published - 2023
Event	International Symposium of the International Federation for Structural Concrete, fib Symposium 2023 - Istanbul, Turkey Duration: 5 Jun 2023 → 7 Jun 2023

Publication series

Name	Lecture Notes in Civil Engineering
Volume	349 LNCE
ISSN (Print)	2366-2557
ISSN (Electronic)	2366-2565

Conference

Conference	International Symposium of the International Federation for Structural Concrete, fib Symposium 2023
Country/Territory	Turkey
City	Istanbul
Period	5/06/23 → 7/06/23

Bibliographical note

Publisher Copyright:
© 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

Funding

Acknowledgments. The authors gratefully acknowledge “ITU Scientific Research Projects Coordination Unit (BAP)” for their financial support (Project number: MYL-2022–43739).

Funders	Funder number
ITU Scientific Research Projects Coordination Unit	MYL-2022–43739

Keywords

Low-strength concrete
bond-slip behavior
coarse aggregate concentration
compressive strength
modulus of elasticity
splitting tensile strength

Access to Document

10.1007/978-3-031-32519-9_102

Cite this

Bicakci, S. N., Abo Kaf, O., Turkmenoglu, H. N., Baran, S., & Atahan, H. N. (2023). Effect of Coarse Aggregate Concentration on the Mechanical Properties and Bond-Slip Behavior Between the Low Strength Concrete and Plain Rebar. In A. Ilki, D. Çavunt, & Y. S. Çavunt (Eds.), Building for the Future: Durable, Sustainable, Resilient - Proceedings of the Symposium 2023 - Volume 1 (pp. 1020-1029). (Lecture Notes in Civil Engineering; Vol. 349 LNCE). Springer Science and Business Media Deutschland GmbH. https://doi.org/10.1007/978-3-031-32519-9_102

Bicakci, Sidar Nihat ; Abo Kaf, Osama ; Turkmenoglu, Hasan Nuri et al. / Effect of Coarse Aggregate Concentration on the Mechanical Properties and Bond-Slip Behavior Between the Low Strength Concrete and Plain Rebar. Building for the Future: Durable, Sustainable, Resilient - Proceedings of the Symposium 2023 - Volume 1. editor / Alper Ilki ; Derya Çavunt ; Yavuz Selim Çavunt. Springer Science and Business Media Deutschland GmbH, 2023. pp. 1020-1029 (Lecture Notes in Civil Engineering).

@inproceedings{eeced0f894104f7b96c9ef12f5542961,

title = "Effect of Coarse Aggregate Concentration on the Mechanical Properties and Bond-Slip Behavior Between the Low Strength Concrete and Plain Rebar",

abstract = "Reinforced concrete structures still exist with low-strength class in which plain reinforcement (rebar) is used. The coarse aggregate concentration (CAC) in such concrete may also vary significantly. Considering such structures and their reinforced concrete bearing systems, in this study, eight different mixtures with 0.9 and 1.2 water/cement ratios (W/Cm) and 4 different CACs (60%-40%-20%-0%) were produced. Total aggregate volume fraction was kept constant in all mixtures. Modulus of elasticity (MOE), compressive, and splitting tensile strength (STS) tests were performed at 28 days. Bond strength and bond-slip behavior were investigated by pull-out tests. Results showed that the compressive strength ranged from 7.9 to 23.4 MPa. While the MOE improved by about 34%, the compressive strength decreased by around 30% when the CAC was increased from 0% to 60% in the concrete with 1.2 W/Cm. With an increase in CAC, compressive strength and MOE increased in the mixtures with W/Cm of 0.9. The presence of coarse aggregate increased STS in the concrete with W/Cm of 1.2, while the mixture with CAC of 60% having W/Cm of 0.9 had the lowest STS. In terms of the bond strength and residual bond stress between the concrete and plain rebar, the mixtures without coarse aggregate have performed worst for both W/Cm. Additionally, when the CAC was increased from 0% to 40%, in the mixtures with W/Cm of 0.9, almost 60% improvement in bond strength was seen. Moreover, bond-slip behaviors of the mixtures were evaluated.",

keywords = "Low-strength concrete, bond-slip behavior, coarse aggregate concentration, compressive strength, modulus of elasticity, splitting tensile strength",

author = "Bicakci, {Sidar Nihat} and {Abo Kaf}, Osama and Turkmenoglu, {Hasan Nuri} and Servan Baran and Atahan, {Hakan Nuri}",

note = "Publisher Copyright: {\textcopyright} 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.; International Symposium of the International Federation for Structural Concrete, fib Symposium 2023 ; Conference date: 05-06-2023 Through 07-06-2023",

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doi = "10.1007/978-3-031-32519-9_102",

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series = "Lecture Notes in Civil Engineering",

publisher = "Springer Science and Business Media Deutschland GmbH",

pages = "1020--1029",

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Bicakci, SN, Abo Kaf, O, Turkmenoglu, HN, Baran, S & Atahan, HN 2023, Effect of Coarse Aggregate Concentration on the Mechanical Properties and Bond-Slip Behavior Between the Low Strength Concrete and Plain Rebar. in A Ilki, D Çavunt & YS Çavunt (eds), Building for the Future: Durable, Sustainable, Resilient - Proceedings of the Symposium 2023 - Volume 1. Lecture Notes in Civil Engineering, vol. 349 LNCE, Springer Science and Business Media Deutschland GmbH, pp. 1020-1029, International Symposium of the International Federation for Structural Concrete, fib Symposium 2023, Istanbul, Turkey, 5/06/23. https://doi.org/10.1007/978-3-031-32519-9_102

Effect of Coarse Aggregate Concentration on the Mechanical Properties and Bond-Slip Behavior Between the Low Strength Concrete and Plain Rebar. / Bicakci, Sidar Nihat; Abo Kaf, Osama; Turkmenoglu, Hasan Nuri et al.
Building for the Future: Durable, Sustainable, Resilient - Proceedings of the Symposium 2023 - Volume 1. ed. / Alper Ilki; Derya Çavunt; Yavuz Selim Çavunt. Springer Science and Business Media Deutschland GmbH, 2023. p. 1020-1029 (Lecture Notes in Civil Engineering; Vol. 349 LNCE).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Baran, Servan

AU - Atahan, Hakan Nuri

PY - 2023

Y1 - 2023

N2 - Reinforced concrete structures still exist with low-strength class in which plain reinforcement (rebar) is used. The coarse aggregate concentration (CAC) in such concrete may also vary significantly. Considering such structures and their reinforced concrete bearing systems, in this study, eight different mixtures with 0.9 and 1.2 water/cement ratios (W/Cm) and 4 different CACs (60%-40%-20%-0%) were produced. Total aggregate volume fraction was kept constant in all mixtures. Modulus of elasticity (MOE), compressive, and splitting tensile strength (STS) tests were performed at 28 days. Bond strength and bond-slip behavior were investigated by pull-out tests. Results showed that the compressive strength ranged from 7.9 to 23.4 MPa. While the MOE improved by about 34%, the compressive strength decreased by around 30% when the CAC was increased from 0% to 60% in the concrete with 1.2 W/Cm. With an increase in CAC, compressive strength and MOE increased in the mixtures with W/Cm of 0.9. The presence of coarse aggregate increased STS in the concrete with W/Cm of 1.2, while the mixture with CAC of 60% having W/Cm of 0.9 had the lowest STS. In terms of the bond strength and residual bond stress between the concrete and plain rebar, the mixtures without coarse aggregate have performed worst for both W/Cm. Additionally, when the CAC was increased from 0% to 40%, in the mixtures with W/Cm of 0.9, almost 60% improvement in bond strength was seen. Moreover, bond-slip behaviors of the mixtures were evaluated.

AB - Reinforced concrete structures still exist with low-strength class in which plain reinforcement (rebar) is used. The coarse aggregate concentration (CAC) in such concrete may also vary significantly. Considering such structures and their reinforced concrete bearing systems, in this study, eight different mixtures with 0.9 and 1.2 water/cement ratios (W/Cm) and 4 different CACs (60%-40%-20%-0%) were produced. Total aggregate volume fraction was kept constant in all mixtures. Modulus of elasticity (MOE), compressive, and splitting tensile strength (STS) tests were performed at 28 days. Bond strength and bond-slip behavior were investigated by pull-out tests. Results showed that the compressive strength ranged from 7.9 to 23.4 MPa. While the MOE improved by about 34%, the compressive strength decreased by around 30% when the CAC was increased from 0% to 60% in the concrete with 1.2 W/Cm. With an increase in CAC, compressive strength and MOE increased in the mixtures with W/Cm of 0.9. The presence of coarse aggregate increased STS in the concrete with W/Cm of 1.2, while the mixture with CAC of 60% having W/Cm of 0.9 had the lowest STS. In terms of the bond strength and residual bond stress between the concrete and plain rebar, the mixtures without coarse aggregate have performed worst for both W/Cm. Additionally, when the CAC was increased from 0% to 40%, in the mixtures with W/Cm of 0.9, almost 60% improvement in bond strength was seen. Moreover, bond-slip behaviors of the mixtures were evaluated.

KW - Low-strength concrete

KW - bond-slip behavior

KW - coarse aggregate concentration

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KW - modulus of elasticity

KW - splitting tensile strength

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Bicakci SN, Abo Kaf O, Turkmenoglu HN, Baran S, Atahan HN. Effect of Coarse Aggregate Concentration on the Mechanical Properties and Bond-Slip Behavior Between the Low Strength Concrete and Plain Rebar. In Ilki A, Çavunt D, Çavunt YS, editors, Building for the Future: Durable, Sustainable, Resilient - Proceedings of the Symposium 2023 - Volume 1. Springer Science and Business Media Deutschland GmbH. 2023. p. 1020-1029. (Lecture Notes in Civil Engineering). doi: 10.1007/978-3-031-32519-9_102

Effect of Coarse Aggregate Concentration on the Mechanical Properties and Bond-Slip Behavior Between the Low Strength Concrete and Plain Rebar

Abstract

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Keywords

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