**4. Conclusions**

In this study, the effect of HPMC on the workability of IOT concrete was studied. Moreover, the influence mechanism of HPMC on the mechanical properties of IOT concrete was further clarified. Based on the experimental results, several conclusions can be drawn:


about 1800, which does not affect the durability. Therefore, it is an effective measure to improve the workability of IOT concrete by adding HPMC.

**Author Contributions:** Conceptualization, X.G., X.L.; data curation, W.Z., Y.G., and Y.K.; writing of the original draft, X.L., W.Z., and Y.K.; writing of review and editing, W.Z., J.L., and X.Z. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research was funded by the National Key Research and Development Plan of China (2019YFC1907202), the Research and Development Project, Liaoning (2020020307-JH1/103-02), and the Fundamental Research Funds for the Central Universities (N2101019).

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** Not applicable.

**Acknowledgments:** Not applicable.

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

#### **References**

