## 5 Conclusions  
In this investigation, glass fibers are utilized to reinforce and modify cement-stabilized soft clay. A comprehensive exploration of the mechanical strength is conducted through a uniaxial compression test, scrutinizing the influence of fiber length, fiber amount, and curing time on mechanical strength. Additionally, the mechanism of fiber reinforcement of FCSSC is analyzed based on microscopic images. The following conclusions have thus been drawn.  
1. The utilization of glass fibers enhances the performance of FCSSC in plastic deformation and compressive strength. At a curing age of 7 days, the stabilized soft clay  
Figure 8: The measured and fitting results of the stress–strain curves.  
demonstrates heightened compressive strength, contributing to an improved early strength profile.
2. The length of the glass fibers in FCSSC plays a pivotal role in determining the unconfined compressive strength of stabilized soft clay. The reinforcing effect is most pronounced for short-cut fibers, followed by medium-cut fibers and long-cut fibers. This is attributed to the intimate contact of shorter-chopped fibers with the hydration gel, enabling the sample to withstand greater compressive stress.
3. The impact of increasing the fiber content on the strength index follows an initial increase and subsequently decreases. Considering both mechanical properties and engineering economy, the optimal amount is determined to be 0.3%. Excessive fiber content and excessively long fibers may result in cross-linking and entanglement, increasing porosity in the fiber aggregation area and diminishing the sample's ability to resist loading and deformation.
4. Glass fibers function as a bridge in stabilized soft clay, effectively inhibiting the expansion of compression cracks and the formation of additional cracks. This action mitigates the overall severity of deformation and compression fractures in the sample. The synergistic interplay between glass fibers and hydration gel constitutes a significant factor involved in enhancing the mechanical properties of stabilized soft clay.
5. The proposed constitutive model based on mesoscopic damage mechanics proves effective in describing the strain evolution of stabilized soft clay and accurately reflects the softening characteristics observed in the stress-strain curves under uniaxial compression.  
Conceptualization, T.Y.; methodology, T.Y. and S.C.; formal analysis, S.C.; validation, X.Z. ([PERSON]); investigation, X.Z. ([PERSON]); resources, X.Z. ([PERSON]); writing--original draft preparation, T.Y.; writing--review and editing, T.Y. and R.A.; supervision, Z.Z. and X.Z. ([PERSON]); funding acquisition, T.Y. All authors have read and agreed to the published version of the manuscript. This research was funded by the Qingyang City Science and Technology Talent Special Plan Project (QY-STK-2022A-002); and the 2023 University Teacher Innovation Fund Project (2023A-145). Institutional Review Board Statement: Not applicable. Informed Consent Statement: Not applicable. Data Availability Statement: The data presented in this study are available on request from the corresponding author. The data are not publicly available due to reasonable request. This study was supported by the Qingyang City Science and Technology Talent Special Plan Project (QY-STK-2022A-002) and the 2023 University Teacher Innovation Fund Project (2023A-145). The authors also thank the anonymous reviewers for their comments on this manuscript. The authors declare no conflicts of interest.