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Size effect on mechanical strengths of geopolymer concrete: An experimental and numerical study
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DOI：10.1016/j.cemconres.2026.108354.png)
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Abstract
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• A mesoscale modeling framework considering heterogeneity and defects was developed to study the mechanical behavior of GPC. • GPC has detectable size effect in flexural, cubic compressive, and axial compressive strengths with a descending order. • Size effect intensifies with increase of slag content, aggregate content, and initial crack depth. • A unified size effect model was proposed by combining with Bažant SEL, enabling strength predictions with adequate accuracy.
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