**11. Conclusions**

Based on the findings from this study, the following conclusions can be drawn:


temperature air environment. In the low-temperature water environment, the surface protrusions become rough, and there are only a small number of additive particles in the cross-section at 90 days, which reduces the adhesion of the rubber matrix and affects the strength of the rubber waterstop.


**Author Contributions:** Conceptualization, L.Y. and S.L.; methodology, S.L.; software, S.L.; validation, S.L., W.Y. and M.L.; formal analysis, S.L.; investigation, W.Y.; resources, L.Y.; data curation, S.L.; writing—original draft preparation, S.L.; writing—review and editing, L.Y.; visualization, W.Y.; project administration, L.Y.; funding acquisition, Project of Jiangsu Provincial Construction Engineering Administration. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

**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.

**Conflicts of Interest:** The authors declare no conflict of interest.
