Summary

This paper evaluates the stress-strain behavior and reaction mechanism of alkali-activated CQU-1 lunar regolith simulant geopolymer. It investigates the effects of curing temperature, curing time, and water binder ratio on mechanical properties. The study proposes models for stress-strain, elastic modulus, and peak strain behavior. The CQU-1 simulant is used to prepare cylindrical specimens under axial compression. This study investigates the mechanical behavior of alkali-activated CQU-1 lunar regolith simulant geopolymer (LRSG) under various curing conditions. The research focuses on the coupled effects of curing temperature, time, and water binder ratio on the full stress-strain behavior of the material. A series of unconfined compressive strength (UCS) tests were conducted to analyze the influence of these parameters on the mechanical properties of the LRSG. The results were used to develop a predictive model using multivariate nonlinear regression. Additionally, microstructural and phase composition analyses were performed using X-ray diffraction (XRD) to elucidate the reaction mechanism of alkali-activated LRSG. The study provides a foundation for utilizing alkali-activated CQ

Methods and applications