**4. Conclusions**

In this study, the particle-shape classification of a large amount of aggregate was conducted using a wire mesh method. Three different types of aggregate that are usually used on construction sites were selected by size (11–15 mm, 17–32 mm, and 33–51 mm) to test the performance of the wire mesh classification. Based on the experimental results, the following conclusions can be drawn:

1. The sphericity of the three different sizes of aggregate was measured for classifying them as angular, sub-angular/sub-rounded, and rounded based on sphericity ranges of 0.3–0.4, 0.5–0.7, and 0.8–0.9, respectively.


**Author Contributions:** Conceptualization, S.-S.P. and J.-S.L.; methodology, S.-S.P. and J.-S.L.; validation, S.-S.P., J.-S.L., and D.-E.L.; formal analysis, S.-S.P., J.-S.L., and D.-E.L.; investigation, S.-S.P. and J.-S.L.; data curation, S.-S.P. and J.-S.L.; writing—original draft preparation, S.-S.P. and J.-S.L.; writing—review and editing, S.-S.P. and J.-S.L.; supervision, S.-S.P.; funding acquisition, S.-S.P. and D.-E.L. All authors have read and agreed to the published version of the manuscript.

**Funding:** This work was supported by a National Research Foundation of Korea (NRF) gran<sup>t</sup> funded by the Korean governmen<sup>t</sup> (MSIT) (No. NRF-2018R1A5A1025137).

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