# Compression Law and Settlement Calculation Method of Over-Wet Soil Based on Large Samples
## 4 Conclusions  
This study analyzed the compression process of over-wet soil through compression and thermogravimetric tests of large specimens, clarified the differences in compression laws between large-sized and small-sized specimens, and proposed a calculation method that conforms to the in-situ settlement law. The main conclusions are as follows:  
1. The \(d-\log t\) curve of the over-wet soil differed significantly from that of general soft soil. The deformation could not be stabilized within a short period. Employing a three-stage compression division method based on the \(d-t\) curves is recommended.
2. When the load was below the pre-consolidation pressure, the deformation of the over-wet soil increased as the compaction degree decreased, and the creep deformation was insignificant. When the load exceeded the pre-consolidation pressure, the deformation of the over-wet soil increased as the water content increased. The proportion of creep deformation exceeded 60%.
3. Free water in over-wet soil was mainly discharged during the primary consolidation stage. Weakly bound water was mainly discharged during the tertiary consolidation stage, and strongly bound water remained almost unchanged. The large creep deformation of over-wet soil was caused by the discharge of weakly bound water, which was determined by comparing the drainage amounts of weakly bound water and strongly bound water.
4. The creep of the over-wet soil increased linearly with the water content, and its linear correlation coefficient exceeded 0.94. This law was the first to define the creep coefficient. Based on the conventional layered summation method, an exponential relationship between the creep coefficient and load was proposed. Furthermore, a  
Figure 19: Comparison between measured and calculated values.  
calculation method for the foundation settlement of over-wet soil was established with a higher prediction accuracy than the conventional method.  
In this study, in-depth research was conducted on the compression law and settlement of over-wet soil. However, owing to the single source of soil samples, potential deviations may have been present, and further research is needed to determine the applicability of the findings to different types of soils; thus, the study's universality still needs to be further expanded. In the future, research can be conducted on over-wet soil in different regions to verify the conclusions of this study.  
Conceptualization, B.P.; Methodology, B.P., R.F. and C.S.; Formal analysis, B.P. and C.S.; Resources, L.W., R.F. and C.S.; Data curation, J.L. and X.B.; Writing--original draft, B.P. and J.L.; Writing--review & editing, B.P.; Supervision, L.W. All authors have read and agreed to the published version of the manuscript.  
This study was funded by The Special Funds for the Basic Research and Development Program in the Central Non-profit Research Institutes of China (0122 KY0301111), and The National Natural Science Foundation of China (51778048).  
The raw data supporting the conclusions of this article will be made available by the authors on request.  
The authors declare no conflicts of interest.