Diagonal Shear Tests for Glass Fiber Reinforced Gypsum (GFRG) Panels with and Without Concrete Filled Cells

Beyza Kapucu Guzelbulut; Ergun Binbir; Oguz C. Celik

doi:10.1007/978-3-030-88166-5_147

Diagonal Shear Tests for Glass Fiber Reinforced Gypsum (GFRG) Panels with and Without Concrete Filled Cells

Beyza Kapucu Guzelbulut^*, Ergun Binbir, Oguz C. Celik

^*Corresponding author for this work

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

Abstract

This study presents results from a number of glass fiber reinforced gypsum (GFRG) wall specimens that were monotonically tested at an angle of 45° and under increasing vertical load. Several infill configurations are considered to see possible changes in strength, stiffness, and failure modes. Eight samples with 770 mm × 770 mm × 124 mm side dimensions were prepared to be used in the diagonal shear tests. Concrete and steel reinforcement (rebar) elements were added to the system to achieve the required strength, stiffness, and ductility. C25 concrete grade and Ø12 steel deformed rebars with a steel grade of S420 were used in these samples. The samples were forced to collapse under a monotonically increasing load. Overall behavior was observed and behavioral values such as ultimate shear strength and initial wall shear rigidity/stiffness values were determined. Related load-deflection curves are given. According to the data that were gathered from the experiments, unfilled specimens and specimens filled with concrete at the middle or edge cells had load capacities around (70–85) kN, while fully concrete filled specimens achieved capacities up to (260–270) kN. Experimental results show that filling the edge or middle cells with concrete (i.e. sort of partial filling) has no significant effect on shear capacity when compared to unfilled samples. Crack patterns developed especially within the unfilled cell regions. The fully concrete filled panel, on the other hand, had a significant impact (approximately 3–4 times) on the capacity when compared with the unfilled case. The rebars used in the fully filled samples had no significant effect mainly from the occurrence of separation between the concrete core and GFRG panel for this type of loading but it increased initial stiffness. When the whole system is compared, concrete filling and rebar increase the initial stiffness of the sample. Filling the edge or middle cells with concrete (with and without rebar) has increased the initial stiffness between (1.17–1.47) times when compared to unfilled samples. Fully concrete filled panel (with and without rebar) had a significant impact (1.97–3.66 times) on initial stiffness when compared with the unfilled samples.

Original language	English
Title of host publication	10th International Conference on FRP Composites in Civil Engineering - Proceedings of CICE 2020/2021
Editors	Alper Ilki, Medine Ispir, Pinar Inci
Publisher	Springer Science and Business Media Deutschland GmbH
Pages	1689-1702
Number of pages	14
ISBN (Print)	9783030881658
DOIs	https://doi.org/10.1007/978-3-030-88166-5_147
Publication status	Published - 2022
Externally published	Yes
Event	10th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2021 - Virtual, Online Duration: 8 Dec 2021 → 10 Dec 2021

Publication series

Name	Lecture Notes in Civil Engineering
Volume	198 LNCE
ISSN (Print)	2366-2557
ISSN (Electronic)	2366-2565

Conference

Conference	10th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2021
City	Virtual, Online
Period	8/12/21 → 10/12/21

Bibliographical note

Publisher Copyright:
© 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.

Funding

All specimens were prepared and donated from Rapid Building Construction Co. Ltd (Hamann® GBS-Gypcrete Building System). Technical assistance of Structural and Earthquake Engineering Laboratory (STEEL) of Istanbul Technical University (ITU) staff is sincerely appreciated. However, any opinions, findings, conclusions, and recommendations presented in this paper are those of the authors and do not necessarily reflect the views of the sponsor and the people.

Funders	Funder number
Istanbul Teknik Üniversitesi

Keywords

Diagonal shear test
GFRG
Initial stiffness
Shear rigidity/stiffness
Shear strength

Access to Document

10.1007/978-3-030-88166-5_147

Cite this

Kapucu Guzelbulut, B., Binbir, E., & Celik, O. C. (2022). Diagonal Shear Tests for Glass Fiber Reinforced Gypsum (GFRG) Panels with and Without Concrete Filled Cells. In A. Ilki, M. Ispir, & P. Inci (Eds.), 10th International Conference on FRP Composites in Civil Engineering - Proceedings of CICE 2020/2021 (pp. 1689-1702). (Lecture Notes in Civil Engineering; Vol. 198 LNCE). Springer Science and Business Media Deutschland GmbH. https://doi.org/10.1007/978-3-030-88166-5_147

Kapucu Guzelbulut, Beyza ; Binbir, Ergun ; Celik, Oguz C. / Diagonal Shear Tests for Glass Fiber Reinforced Gypsum (GFRG) Panels with and Without Concrete Filled Cells. 10th International Conference on FRP Composites in Civil Engineering - Proceedings of CICE 2020/2021. editor / Alper Ilki ; Medine Ispir ; Pinar Inci. Springer Science and Business Media Deutschland GmbH, 2022. pp. 1689-1702 (Lecture Notes in Civil Engineering).

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abstract = "This study presents results from a number of glass fiber reinforced gypsum (GFRG) wall specimens that were monotonically tested at an angle of 45° and under increasing vertical load. Several infill configurations are considered to see possible changes in strength, stiffness, and failure modes. Eight samples with 770 mm × 770 mm × 124 mm side dimensions were prepared to be used in the diagonal shear tests. Concrete and steel reinforcement (rebar) elements were added to the system to achieve the required strength, stiffness, and ductility. C25 concrete grade and {\O}12 steel deformed rebars with a steel grade of S420 were used in these samples. The samples were forced to collapse under a monotonically increasing load. Overall behavior was observed and behavioral values such as ultimate shear strength and initial wall shear rigidity/stiffness values were determined. Related load-deflection curves are given. According to the data that were gathered from the experiments, unfilled specimens and specimens filled with concrete at the middle or edge cells had load capacities around (70–85) kN, while fully concrete filled specimens achieved capacities up to (260–270) kN. Experimental results show that filling the edge or middle cells with concrete (i.e. sort of partial filling) has no significant effect on shear capacity when compared to unfilled samples. Crack patterns developed especially within the unfilled cell regions. The fully concrete filled panel, on the other hand, had a significant impact (approximately 3–4 times) on the capacity when compared with the unfilled case. The rebars used in the fully filled samples had no significant effect mainly from the occurrence of separation between the concrete core and GFRG panel for this type of loading but it increased initial stiffness. When the whole system is compared, concrete filling and rebar increase the initial stiffness of the sample. Filling the edge or middle cells with concrete (with and without rebar) has increased the initial stiffness between (1.17–1.47) times when compared to unfilled samples. Fully concrete filled panel (with and without rebar) had a significant impact (1.97–3.66 times) on initial stiffness when compared with the unfilled samples.",

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author = "{Kapucu Guzelbulut}, Beyza and Ergun Binbir and Celik, {Oguz C.}",

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Kapucu Guzelbulut, B, Binbir, E & Celik, OC 2022, Diagonal Shear Tests for Glass Fiber Reinforced Gypsum (GFRG) Panels with and Without Concrete Filled Cells. in A Ilki, M Ispir & P Inci (eds), 10th International Conference on FRP Composites in Civil Engineering - Proceedings of CICE 2020/2021. Lecture Notes in Civil Engineering, vol. 198 LNCE, Springer Science and Business Media Deutschland GmbH, pp. 1689-1702, 10th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2021, Virtual, Online, 8/12/21. https://doi.org/10.1007/978-3-030-88166-5_147

Diagonal Shear Tests for Glass Fiber Reinforced Gypsum (GFRG) Panels with and Without Concrete Filled Cells. / Kapucu Guzelbulut, Beyza; Binbir, Ergun; Celik, Oguz C.
10th International Conference on FRP Composites in Civil Engineering - Proceedings of CICE 2020/2021. ed. / Alper Ilki; Medine Ispir; Pinar Inci. Springer Science and Business Media Deutschland GmbH, 2022. p. 1689-1702 (Lecture Notes in Civil Engineering; Vol. 198 LNCE).

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

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AU - Celik, Oguz C.

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AB - This study presents results from a number of glass fiber reinforced gypsum (GFRG) wall specimens that were monotonically tested at an angle of 45° and under increasing vertical load. Several infill configurations are considered to see possible changes in strength, stiffness, and failure modes. Eight samples with 770 mm × 770 mm × 124 mm side dimensions were prepared to be used in the diagonal shear tests. Concrete and steel reinforcement (rebar) elements were added to the system to achieve the required strength, stiffness, and ductility. C25 concrete grade and Ø12 steel deformed rebars with a steel grade of S420 were used in these samples. The samples were forced to collapse under a monotonically increasing load. Overall behavior was observed and behavioral values such as ultimate shear strength and initial wall shear rigidity/stiffness values were determined. Related load-deflection curves are given. According to the data that were gathered from the experiments, unfilled specimens and specimens filled with concrete at the middle or edge cells had load capacities around (70–85) kN, while fully concrete filled specimens achieved capacities up to (260–270) kN. Experimental results show that filling the edge or middle cells with concrete (i.e. sort of partial filling) has no significant effect on shear capacity when compared to unfilled samples. Crack patterns developed especially within the unfilled cell regions. The fully concrete filled panel, on the other hand, had a significant impact (approximately 3–4 times) on the capacity when compared with the unfilled case. The rebars used in the fully filled samples had no significant effect mainly from the occurrence of separation between the concrete core and GFRG panel for this type of loading but it increased initial stiffness. When the whole system is compared, concrete filling and rebar increase the initial stiffness of the sample. Filling the edge or middle cells with concrete (with and without rebar) has increased the initial stiffness between (1.17–1.47) times when compared to unfilled samples. Fully concrete filled panel (with and without rebar) had a significant impact (1.97–3.66 times) on initial stiffness when compared with the unfilled samples.

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KW - Initial stiffness

KW - Shear rigidity/stiffness

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SN - 9783030881658

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Kapucu Guzelbulut B, Binbir E, Celik OC. Diagonal Shear Tests for Glass Fiber Reinforced Gypsum (GFRG) Panels with and Without Concrete Filled Cells. In Ilki A, Ispir M, Inci P, editors, 10th International Conference on FRP Composites in Civil Engineering - Proceedings of CICE 2020/2021. Springer Science and Business Media Deutschland GmbH. 2022. p. 1689-1702. (Lecture Notes in Civil Engineering). doi: 10.1007/978-3-030-88166-5_147

Diagonal Shear Tests for Glass Fiber Reinforced Gypsum (GFRG) Panels with and Without Concrete Filled Cells

Abstract

Publication series

Conference

Bibliographical note

Funding

Keywords

Access to Document

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