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Study on Mechanical Properties of Self-Compacting Concrete and Its Filled in-Line Multi-Cavity Steel Tube Bundle Shear Wall

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  • Hongbo Li

    (College of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, China
    Ningxia Research Center of Technology on Water-saving Irrigation and Water Resources Regulation, Yinchuan 750021, China
    Engineering Research Center for Efficient Utilization of water Resources in Modern Agriculture in Arid Regions, Yinchuan 750021, China
    These authors contributed equally to this work and should be considered co-first authors.)

  • Hao Sun

    (College of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, China
    These authors contributed equally to this work and should be considered co-first authors.)

  • Wanlong Zhang

    (College of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, China)

  • Huiyan Gou

    (College of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, China)

  • Qiuning Yang

    (College of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, China)

Abstract

In this paper, five groups of C40 fly ash and silica fume self-compacting concrete (SCC) mix proportion tests and in-line multi-cavity steel tube bundle self-compacting concrete shear wall axial compression performance tests and numerical simulation are completed and presented. The influence of fly ash and silica fume additions on SCC mechanical properties and the filled in-line multi-cavity steel tube bundle shear wall mechanical properties are analyzed and studied. With an increase in the fly ash content from 10% to 40%, the compressive strength of self-compacting concrete increases firstly and then decreases. When the fly ash content is 30% and the silica fume content is 4%, the compressive strength of the 28 d age self-compacting concrete is the highest and the compressive strength formula of the wrapped curing SCC is proposed. The failure of steel tube bundle is multi-wave buckling failure. As the SCC is most obviously affected by the collar at the corner point of the steel tube bundle, its compressive strength is 110 MPa, and is 96 MPa higher than the concrete at the middle point of the web. The deformation resistance of SCC is obviously enhanced by the confinement effect.

Suggested Citation

  • Hongbo Li & Hao Sun & Wanlong Zhang & Huiyan Gou & Qiuning Yang, 2019. "Study on Mechanical Properties of Self-Compacting Concrete and Its Filled in-Line Multi-Cavity Steel Tube Bundle Shear Wall," Energies, MDPI, vol. 12(18), pages 1-18, September.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:18:p:3466-:d:265344
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    References listed on IDEAS

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    1. Hongbo Li & Hao Sun & Juncang Tian & Qiuning Yang & Qingqing Wan, 2019. "Mechanical and Ultrasonic Testing of Self-Compacting Concrete," Energies, MDPI, vol. 12(11), pages 1-15, June.
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    Cited by:

    1. Bartosz Szostak & Grzegorz Ludwik Golewski, 2020. "Improvement of Strength Parameters of Cement Matrix with the Addition of Siliceous Fly Ash by Using Nanometric C-S-H Seeds," Energies, MDPI, vol. 13(24), pages 1-15, December.
    2. Grzegorz Ludwik Golewski, 2022. "Combined Effect of Coal Fly Ash (CFA) and Nanosilica (nS) on the Strength Parameters and Microstructural Properties of Eco-Friendly Concrete," Energies, MDPI, vol. 16(1), pages 1-16, December.
    3. Hao Sun & Qingyuan Xu & Pengfei Yan & Jianguang Yin & Ping Lou, 2020. "A Study on Axial Compression Performance of Concrete-Filled Steel-Tubular Shear Wall with a Multi-Cavity T-Shaped Cross-Section," Energies, MDPI, vol. 13(18), pages 1-20, September.
    4. Grzegorz Ludwik Golewski, 2020. "Energy Savings Associated with the Use of Fly Ash and Nanoadditives in the Cement Composition," Energies, MDPI, vol. 13(9), pages 1-20, May.
    5. Grzegorz Ludwik Golewski, 2021. "The Beneficial Effect of the Addition of Fly Ash on Reduction of the Size of Microcracks in the ITZ of Concrete Composites under Dynamic Loading," Energies, MDPI, vol. 14(3), pages 1-14, January.

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