Author(s)

Chenxi Zhao ¹

Affiliation(s)

¹ College of Architecture and Civil Engineering, Beijing University of Technology, Beijing, 100124, China

Corresponding Author

Chenxi Zhao

ABSTRACT

To promote the engineering application of fully solid waste-based low-carbon concrete, the uniaxial compression behavior of a novel alkali-activated slag/fly ash-based all fly ash aggregate concrete (AASF-AFAAC) was investigated. Thirty cylindrical specimens divided into five groups with varying fly ash contents were prepared for uniaxial compression tests. Based on normalized stress-strain curves, the experimental results were fitted and analyzed using the Guo Zhenhai model. The results indicate that the Guo Zhenhai model achieved the highest fitting accuracy and effectively described the nonlinear mechanical behavior of the material during compression. This study provides reliable mechanical model support for the structural analysis and engineering application of fully solid waste-based alkali-activated lightweight aggregate concrete, achieving the goal of identifying the optimal fitting method.

KEYWORDS

Alkali activated slag fly ash concrete; Fly ash lightweight aggregate; Uniaxial compression test; Stress-strain curve; Normalization

CITE THIS PAPER

Chenxi Zhao. Experimental Study on the Uniaxial Compressive Stress-strain Behavior of Alkali-activated Slag/Fly Ash-based All Fly Ash Aggregate Concrete. Journal of Civil Engineering and Urban Planning (2026). Vol. 8, No.1, 88-99. DOI: http://dx.doi.org/10.23977/jceup.2026.080109.

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