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Engineered Geopolymer Composites (EGC) with Ultra-high Strength and Ductility

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Strain Hardening Cementitious Composites (SHCC 2022)

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Abstract

Engineered Geopolymer Composites (EGC), also known as Strain-Hardening Geopolymer Composites (SHGC), are considered more environmentally friendly than their cement-based counterpart. This study for the first time presents EGC with an ultra-high compressive strength (i.e., over 150 MPa) and an ultra-high tensile ductility (i.e., over 9%) simultaneously. The blended use of fly ash (FA), ground granulated blast slag (GGBS), silica fume, alkali activator, and ultra-high-molecular-weight polyethylene fibers led to the successful development of “Ultra-high-strength & ductility EGC (UHSD-EGC)”. The UHSD-EGC were characterized with excellent multiple cracking and strain-hardening features. In addition, it was found that microstructures of FA-rich geopolymer matrix were looser than those with lower FA/GGBS ratios. The findings arising from this study provided a sound basis for develo** EGC materials with ultra-high mechanical properties for sustainable and resilient infrastructure.

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Author information

Authors and Affiliations

  1. The Hong Kong Polytechnic University, Kowloon, Hong Kong, China

    Jian-Cong Lao, Bo-Tao Huang, Ling-Yu Xu & Jian-Guo Dai

  2. University of Texas at Arlington, Arlington, TX, 76019, USA

    Surendra P. Shah

  3. Northwestern University, Evanston, IL, 60201, USA

    Surendra P. Shah

Authors
  1. Jian-Cong Lao
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  2. Bo-Tao Huang
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  3. Ling-Yu Xu
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  4. Jian-Guo Dai
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  5. Surendra P. Shah
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Corresponding authors

Correspondence to Bo-Tao Huang or Jian-Guo Dai .

Editor information

Editors and Affiliations

  1. Department of Civil Engineering, Gifu University, Gifu, Japan

    Minoru Kunieda

  2. Division of Engineering Mechanics and Energy, University of Tsukuba, Tsukuba, Ibaraki, Japan

    Toshiyuki Kanakubo

  3. Kajima Institute of Technology, Chofu, Tokyo, Japan

    Tetsushi Kanda

  4. Department of Civil Engineering, Gifu University, Gifu, Japan

    Koichi Kobayashi

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Lao, JC., Huang, BT., Xu, LY., Dai, JG., Shah, S.P. (2023). Engineered Geopolymer Composites (EGC) with Ultra-high Strength and Ductility. In: Kunieda, M., Kanakubo, T., Kanda, T., Kobayashi, K. (eds) Strain Hardening Cementitious Composites. SHCC 2022. RILEM Bookseries, vol 39. Springer, Cham. https://doi.org/10.1007/978-3-031-15805-6_4

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  • DOI: https://doi.org/10.1007/978-3-031-15805-6_4

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-031-15804-9

  • Online ISBN: 978-3-031-15805-6

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