Journal of the Korean Asphalt Institute ISSN:2234-0785(Print) 2635-9553(Online) 한국아스팔트학회지

The depletion of natural aggregates has necessitated the exploration of alternative materials, leading to extensive research on recycled aggregates. A critical issue during the production of recycled aggregates with high moisture content is screen clogging, which significantly impacts efficiency. This study aims to predict the moisture content using electrical conductivity. An appropriate electrical conductivity sensor was selected, and both laboratory and field experiments were conducted to measure electrical conductivity and evaluate the moisture content of recycled aggregate. The analysis revealed a strong correlation between electrical conductivity and moisture content, resulting in a moisture content prediction equation. Validation of the proposed equation demonstrated that actual moisture content was 0.10-0.82% higher than the predicted values. Future studies are recommended to examine the relationship between moisture content and screen clogging in vibrating screens. The findings suggest that leveraging electrical conductivity measurements for moisture content evaluation and quantitatively assessing screen clogging can significantly enhance the production efficiency of recycled aggregates.