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Coarse Aggregate Size Effect on Non-linear and Uncertainty Mechanical Behaviors for Concrete

Received: 9 April 2019     Published: 19 July 2019
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Abstract

A series of uniaxial compression tests and simulations were conducted to evaluate the influences of single coarse aggregate (CA) size on the mechanical properties of concrete and their uncertainties. In this research, the specimens of pure mortar matrix and specimens with diameter 15 mm and 30 mm of single spherical steel aggregate were fabricated and tested by a material testing system. Based on experimental results, the mechanical parameters, including the elastic modulus, compressive strength, strain at the peak stress and absorbed strain energy were investigated. It was found that larger size of CA results in higher elastic modulus and compressive strength. Meanwhile, the strain at peak stress and absorbed strain energy of concrete are non-linear with the size of CA. And then, the mechanical properties were analyzed in the aspect of ITZ which is closely related to the size of CA. In addition, simulation results were presented to discuss the stress distribution of different size CA in specimen. In conclusion, the CA size has significant effect on the uncertainty of elastic modulus, strain at the peak stress and absorbed strain energy, but has little effect on the compressive strength. The findings from the current study will help gain the insights into the non-linear and uncertain mechanical behaviors of concrete.

Published in Advances in Materials (Volume 8, Issue 3)
DOI 10.11648/j.am.20190803.11
Page(s) 100-107
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2019. Published by Science Publishing Group

Keywords

Concrete, Coarse Aggregate, Mechanical Property, Uncertainty, Non-linear

References
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[2] Radovani, B. A. (1990). Grain size of adopted aggregate influence on strain-softening of concrete. Engineering Fracture Mechanics 35, 709-718.
[3] Tasdemir, C., Tasdemir, M. A., Lydon, F. D. & Barr, B. I. G. (1996). Effects of silica fume and aggregate size on the brittleness of concrete. Cement and Concrete Research 26, 63-68.
[4] Su, R. K. L. & Bei, C. (2008). The Effect of Coarse Aggregate Size on the Stress-strain Curves of Concrete under Uniaxial Compression. HKIE Transactions 15, 33-39.
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[10] Ollivier, J. P., Maso, J. C. & Bourdette, B. (1995). Interfacial transition zone in concrete. Advanced Cement Based Materials 2, 30-38.
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[14] Lee, K. M. & Park, J. H. (2008). A numerical model for elastic modulus of concrete considering interfacial transition zone. Cement and Concrete Research 38, 396-402.
[15] Zhu, W. & Bartos, P. J. M. (2000). Application of depth-sensing microindentation testing to study of interfacial transition zone in reinforced concrete. Cement and Concrete Research 30, 1299-1304.
[16] Prokopski, G. & Halbiniak, J. (2000). Interfacial transition zone in cementitious materials. Cement and Concrete Research 30, 579-583.
[17] Tasong, W. A., Lynsdale, C. J. & Cripps, J. C. (1999). Aggregate-cement paste interface: Part I. Influence of aggregate geochemistry. Cement and Concrete Research 29, 1019-1025.
[18] Hu, J. & Stroeven, P. (2004). Properties of the Interfacial Transition Zone in Model Concrete. Interface Science 12, 389-397.
[19] Zheng, J. J., Li, C. Q. & Zhou, X. Z. (2005). Characterization of microstructure of interfacial transition zone in concrete. ACI materials journal 102, 265-271.
[20] Yue, L. & Shuguang, H. (2001). The microstructure of the interfacial transition zone between steel and cement paste. Cement and Concrete Research 31, 385-388.
[21] Akçaoğlu, T., Tokyay, M. & Çelik, T. (2004). Effect of coarse aggregate size and matrix quality on ITZ and failure behavior of concrete under uniaxial compression. Cement and Concrete Composites 26, 633-638.
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  • APA Style

    Ping Liu. (2019). Coarse Aggregate Size Effect on Non-linear and Uncertainty Mechanical Behaviors for Concrete. Advances in Materials, 8(3), 100-107. https://doi.org/10.11648/j.am.20190803.11

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    ACS Style

    Ping Liu. Coarse Aggregate Size Effect on Non-linear and Uncertainty Mechanical Behaviors for Concrete. Adv. Mater. 2019, 8(3), 100-107. doi: 10.11648/j.am.20190803.11

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    AMA Style

    Ping Liu. Coarse Aggregate Size Effect on Non-linear and Uncertainty Mechanical Behaviors for Concrete. Adv Mater. 2019;8(3):100-107. doi: 10.11648/j.am.20190803.11

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  • @article{10.11648/j.am.20190803.11,
      author = {Ping Liu},
      title = {Coarse Aggregate Size Effect on Non-linear and Uncertainty Mechanical Behaviors for Concrete},
      journal = {Advances in Materials},
      volume = {8},
      number = {3},
      pages = {100-107},
      doi = {10.11648/j.am.20190803.11},
      url = {https://doi.org/10.11648/j.am.20190803.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.am.20190803.11},
      abstract = {A series of uniaxial compression tests and simulations were conducted to evaluate the influences of single coarse aggregate (CA) size on the mechanical properties of concrete and their uncertainties. In this research, the specimens of pure mortar matrix and specimens with diameter 15 mm and 30 mm of single spherical steel aggregate were fabricated and tested by a material testing system. Based on experimental results, the mechanical parameters, including the elastic modulus, compressive strength, strain at the peak stress and absorbed strain energy were investigated. It was found that larger size of CA results in higher elastic modulus and compressive strength. Meanwhile, the strain at peak stress and absorbed strain energy of concrete are non-linear with the size of CA. And then, the mechanical properties were analyzed in the aspect of ITZ which is closely related to the size of CA. In addition, simulation results were presented to discuss the stress distribution of different size CA in specimen. In conclusion, the CA size has significant effect on the uncertainty of elastic modulus, strain at the peak stress and absorbed strain energy, but has little effect on the compressive strength. The findings from the current study will help gain the insights into the non-linear and uncertain mechanical behaviors of concrete.},
     year = {2019}
    }
    

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  • TY  - JOUR
    T1  - Coarse Aggregate Size Effect on Non-linear and Uncertainty Mechanical Behaviors for Concrete
    AU  - Ping Liu
    Y1  - 2019/07/19
    PY  - 2019
    N1  - https://doi.org/10.11648/j.am.20190803.11
    DO  - 10.11648/j.am.20190803.11
    T2  - Advances in Materials
    JF  - Advances in Materials
    JO  - Advances in Materials
    SP  - 100
    EP  - 107
    PB  - Science Publishing Group
    SN  - 2327-252X
    UR  - https://doi.org/10.11648/j.am.20190803.11
    AB  - A series of uniaxial compression tests and simulations were conducted to evaluate the influences of single coarse aggregate (CA) size on the mechanical properties of concrete and their uncertainties. In this research, the specimens of pure mortar matrix and specimens with diameter 15 mm and 30 mm of single spherical steel aggregate were fabricated and tested by a material testing system. Based on experimental results, the mechanical parameters, including the elastic modulus, compressive strength, strain at the peak stress and absorbed strain energy were investigated. It was found that larger size of CA results in higher elastic modulus and compressive strength. Meanwhile, the strain at peak stress and absorbed strain energy of concrete are non-linear with the size of CA. And then, the mechanical properties were analyzed in the aspect of ITZ which is closely related to the size of CA. In addition, simulation results were presented to discuss the stress distribution of different size CA in specimen. In conclusion, the CA size has significant effect on the uncertainty of elastic modulus, strain at the peak stress and absorbed strain energy, but has little effect on the compressive strength. The findings from the current study will help gain the insights into the non-linear and uncertain mechanical behaviors of concrete.
    VL  - 8
    IS  - 3
    ER  - 

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Author Information
  • China Ship Development and Design Center, The 701 Research Institute of CSIC, Wuhan, China

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