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Influence of operating parameters of a multi-cutter milling rotor on particle size.
- Source :
-
Powder Technology . Apr2024, Vol. 438, pN.PAG-N.PAG. 1p. - Publication Year :
- 2024
-
Abstract
- Controlling particle size presented challenges during cold pavement reclaiming machine operation. The entire milling rotor was investigated to overcome the limitations of single-tool research. Firstly, the discrete element method was employed to construct a model of milling particles and old-asphalt-pavement. Secondly, a multi-cutter rotor milling pavement model was established through complete factorial testing, exploring the influence of operating parameters on performance and particle size. Finally, a cold pavement reclaiming machine performance prediction system was developed. Results demonstrated that matched moving and rotor speeds effectively regulated particle size. For instance, at a milling depth of 80 mm, setting the rotor speed to 2.5 r/s and moving speed to 0.25 m/s was recommended. Furthermore, the prediction system precisely estimated particle bonding ratio, mixing flow rate, and average torque, with average prediction errors of 6.1%, 3.5%, and 9.4%, respectively. It effectively forecasted particle size when particle bonding ratio ranged from 10% to 25%. [Display omitted] • A project-consistent constitutive model for old asphalt pavement was developed. • A pavement model featuring a multi-cutter milling rotor was established. • The correlation between particle size and CPRM operational parameters was explored. • The optimal operational parameters for CPRM were determined. • Better particle size was achieved within the particle bonding ratio range of 10–25%. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00325910
- Volume :
- 438
- Database :
- Academic Search Index
- Journal :
- Powder Technology
- Publication Type :
- Academic Journal
- Accession number :
- 176394205
- Full Text :
- https://doi.org/10.1016/j.powtec.2024.119651