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

Jian Cong Lao, Bo Tao Huang*, Ling Yu Xu, Jian Guo Dai, Surendra P. Shah

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapter


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 developing EGC materials with ultra-high mechanical properties for sustainable and resilient infrastructure.

Original languageEnglish (US)
Title of host publicationRILEM Bookseries
PublisherSpringer Science and Business Media B.V.
Number of pages9
StatePublished - 2023

Publication series

NameRILEM Bookseries
ISSN (Print)2211-0844
ISSN (Electronic)2211-0852


  • Compressive strength
  • Engineered Geopolymer Composites (EGC)
  • Multiple cracking
  • Strain-Hardening Geopolymer Composite (SHGC)
  • Tensile ductility

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials


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