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Experimental Study on Interface Strength Between Hardened Cement Paste-Aggregate

Received: 9 March 2021     Published: 26 April 2021
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Abstract

The interfacial transition zone (ITZ) is a weak part of concrete, which is the main reason that the mechanical properties of concrete are far lower than those of hardened cement paste and aggregate itself. In order to improve the mechanical properties of concrete ITZ, the effects of cement varieties, water-binder ratio, mineral admixtures and aggregate types on the strength of hardened cement paste-aggregate ITZ were studied by orthogonal test. A linear regression model between interfacial bonding splitting tensile strength and splitting tensile strength of hardened cement paste was proposed. The results show that the water-binder ratio has the greatest impact on the mechanical properties of ITZ, followed by aggregate. The interfacial bonding splitting tensile strength of five kinds of aggregate and cement paste is in the order of marble > coral > granite > basalt > quartzite. The optimal interface test combination is as follows: water-binder ratio 0.25, aggregate is marble, P•O52.5 cement, slag content 15%, fly ash content 20% and silica fume content 10%. The optimal cement slurry combination is: water-cement ratio 0.25, basic magnesium sulfate cement, slag content 15%, fly ash content 20% and silica fume content 10%. The linear regression model between interfacial bond splitting tensile strength and hardened cement paste splitting tensile strength is established by dividing aggregate, which is of great significance to study the law of interfacial strength.

Published in American Journal of Civil Engineering (Volume 9, Issue 2)
DOI 10.11648/j.ajce.20210902.13
Page(s) 47-54
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), 2021. Published by Science Publishing Group

Keywords

Interfacial Transition Zone, Interfacial Bonding Splitting Tensile Strength, Orthogonal Test, Range Analysis

References
[1] Chen H S, Sun W, Stroeven Piet. Interfacial transition zone between aggregate and paste in cementitious composite (I): Experimental Techniques [J]. Journal of the Chinese Ceramic Society, 2004 (01): 63-69 (in Chinese).
[2] Xie S S. Study on interfacial bonding in cement-based composites [J]. Journal of the Chinese Ceramic Society, 1983 (04): 489-497 (in Chinese).
[3] Wang Y H, Hui H Y, Li Z L. Experiment of mechanics properties of interfacial transition zone between of aggregate and mortar [J]. Concrete, 2020 (01): 19-21 (in Chinese).
[4] Zhu W, Bartosp J M. Application of depth-sensing microindentation testing to study of interfacial transition zone in reinforced concrete [J]. Cement and Concrete Research, 2000, 30 (8): 1299-1304.
[5] Zhu Y C. Experimental investigation on the mechanical properties of mortar-aggregate in Concrete [D]. Dalian University of Technology, 2011 (in Chinese).
[6] Wang Z L, Gu X L, Lin F. Experimental Study on Mechanical Performance of Interface between Mortar and Aggregate in Concrete [C]// Workshop on Biennial International Conference on Engineering. 2010: 3529-3536.
[7] Rao G A, Prasad B K R. Influence of the roughness of aggregate surface on the interface bond strength [J]. Cement & Concrete Research, 2002, 32 (2): 253-257.
[8] Zhou J J, Pan J L, Liang J N, et al. Influence of size effect on bonding performance between coarse aggregate and cement paste [J]. Journal of Building Materials, 2012, 15 (05): 712-716 (in Chinese).
[9] Wang S. Effect of mineral admixture on performance of interface transition zone and pore structure of concrete [D]. Harbin Institute of Technology, 2018 (in Chinese).
[10] Zhang Z Q. Effect of aggregate varieties on mechanical characteristics of hydraulic concrete and numerical simulation of concrete [D]. Changjiang River Scientific Research Institute, 2018 (in Chinese).
[11] Dong Y Y. Experimental study on the mechanical properties of the interfacial zone of cement based composites [D]. Inner Mongolia University of Technology, 2016 (in Chinese).
[12] Lian L. Study on microstructure concrete [D]. Wuhan University of Technology, 2006 (in Chinese).
[13] Hua S. Research on the microstructure and the mechanical property of interface transition zone of coral concrete [D]. Nanjing University of Aeronautics and Astronautics, 2019 (in Chinese).
[14] Gong W, Yu H F, Ma H Y, et al. Mix proportion design and evaluation approach of coral Aggregate seawater concrete [J]. Materials Reports, 2019, 33 (22): 3732-3737 (in Chinese).
[15] D. Mu, Basic Course of Applied Economic Mathematics: Linear Algebra and Probability Statistics, Economic Press China, 1989, pp. 258–268 (in Chinese).
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    Wenliang Han, Hongfa Yu, Haiyan Ma. (2021). Experimental Study on Interface Strength Between Hardened Cement Paste-Aggregate. American Journal of Civil Engineering, 9(2), 47-54. https://doi.org/10.11648/j.ajce.20210902.13

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    ACS Style

    Wenliang Han; Hongfa Yu; Haiyan Ma. Experimental Study on Interface Strength Between Hardened Cement Paste-Aggregate. Am. J. Civ. Eng. 2021, 9(2), 47-54. doi: 10.11648/j.ajce.20210902.13

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    AMA Style

    Wenliang Han, Hongfa Yu, Haiyan Ma. Experimental Study on Interface Strength Between Hardened Cement Paste-Aggregate. Am J Civ Eng. 2021;9(2):47-54. doi: 10.11648/j.ajce.20210902.13

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  • @article{10.11648/j.ajce.20210902.13,
      author = {Wenliang Han and Hongfa Yu and Haiyan Ma},
      title = {Experimental Study on Interface Strength Between Hardened Cement Paste-Aggregate},
      journal = {American Journal of Civil Engineering},
      volume = {9},
      number = {2},
      pages = {47-54},
      doi = {10.11648/j.ajce.20210902.13},
      url = {https://doi.org/10.11648/j.ajce.20210902.13},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajce.20210902.13},
      abstract = {The interfacial transition zone (ITZ) is a weak part of concrete, which is the main reason that the mechanical properties of concrete are far lower than those of hardened cement paste and aggregate itself. In order to improve the mechanical properties of concrete ITZ, the effects of cement varieties, water-binder ratio, mineral admixtures and aggregate types on the strength of hardened cement paste-aggregate ITZ were studied by orthogonal test. A linear regression model between interfacial bonding splitting tensile strength and splitting tensile strength of hardened cement paste was proposed. The results show that the water-binder ratio has the greatest impact on the mechanical properties of ITZ, followed by aggregate. The interfacial bonding splitting tensile strength of five kinds of aggregate and cement paste is in the order of marble > coral > granite > basalt > quartzite. The optimal interface test combination is as follows: water-binder ratio 0.25, aggregate is marble, P•O52.5 cement, slag content 15%, fly ash content 20% and silica fume content 10%. The optimal cement slurry combination is: water-cement ratio 0.25, basic magnesium sulfate cement, slag content 15%, fly ash content 20% and silica fume content 10%. The linear regression model between interfacial bond splitting tensile strength and hardened cement paste splitting tensile strength is established by dividing aggregate, which is of great significance to study the law of interfacial strength.},
     year = {2021}
    }
    

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  • TY  - JOUR
    T1  - Experimental Study on Interface Strength Between Hardened Cement Paste-Aggregate
    AU  - Wenliang Han
    AU  - Hongfa Yu
    AU  - Haiyan Ma
    Y1  - 2021/04/26
    PY  - 2021
    N1  - https://doi.org/10.11648/j.ajce.20210902.13
    DO  - 10.11648/j.ajce.20210902.13
    T2  - American Journal of Civil Engineering
    JF  - American Journal of Civil Engineering
    JO  - American Journal of Civil Engineering
    SP  - 47
    EP  - 54
    PB  - Science Publishing Group
    SN  - 2330-8737
    UR  - https://doi.org/10.11648/j.ajce.20210902.13
    AB  - The interfacial transition zone (ITZ) is a weak part of concrete, which is the main reason that the mechanical properties of concrete are far lower than those of hardened cement paste and aggregate itself. In order to improve the mechanical properties of concrete ITZ, the effects of cement varieties, water-binder ratio, mineral admixtures and aggregate types on the strength of hardened cement paste-aggregate ITZ were studied by orthogonal test. A linear regression model between interfacial bonding splitting tensile strength and splitting tensile strength of hardened cement paste was proposed. The results show that the water-binder ratio has the greatest impact on the mechanical properties of ITZ, followed by aggregate. The interfacial bonding splitting tensile strength of five kinds of aggregate and cement paste is in the order of marble > coral > granite > basalt > quartzite. The optimal interface test combination is as follows: water-binder ratio 0.25, aggregate is marble, P•O52.5 cement, slag content 15%, fly ash content 20% and silica fume content 10%. The optimal cement slurry combination is: water-cement ratio 0.25, basic magnesium sulfate cement, slag content 15%, fly ash content 20% and silica fume content 10%. The linear regression model between interfacial bond splitting tensile strength and hardened cement paste splitting tensile strength is established by dividing aggregate, which is of great significance to study the law of interfacial strength.
    VL  - 9
    IS  - 2
    ER  - 

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Author Information
  • Civil Aviation College, Nanjing University of Aeronautics and Astronautics, Nanjing, China

  • Civil Aviation College, Nanjing University of Aeronautics and Astronautics, Nanjing, China

  • Civil Aviation College, Nanjing University of Aeronautics and Astronautics, Nanjing, China

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