2016-Sustainable Industrial Processing Summit
SIPS 2016 Volume 5: Starkey Intl. Symp. / Mineral Processing
| Editors: | Kongoli F, Kumar P, Senchenko A, Klein B, Silva A.C., Sun C, Mingan W |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2016 |
| Pages: | 270 pages |
| ISBN: | 978-1-987820-44-7 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Predicting aggregate quality for flexible road pavement with Bond work index
Oluwole Adigun1; Babatunde Adebayo2; Olugbenga Amu3; Adeola Oladeji3;1FEDERAL UNIVERSITY, Oye, Nigeria; 2FEDERAL UNIVERSITY OF TECHNOLOGY, Akure, Nigeria; 3FEDERAL UNIVERSITY, Oye-Ekiti, Nigeria;
Type of Paper: Regular
Id Paper: 354
Topic: 5
Abstract:
In this research, Bond work index was used to evaluate the grinding energies of selected rock samples in order to predict their use as aggregate for road pavement. Samples of granite gneiss, porphyritic granite (Location1 i.e. L1), charnockitic rock and porphyritic granite (Location2 i.e. L2) from Itaji and Ikere in Ekiti State, Akure and Itaogbolu in Ondo State respectively; all in southwestern Nigeria were tested for hardness (aggregate crushing value, ACV and aggregate impact value, AIV). The Bond work index of these samples was also determined. The Bond work index of the granite gneiss was found to be 13.72kWh/t, that of the porphyritic granite (L2) 12.76kWh/t and that of the porphyritic granite (L1) and charnockitic rock were found to be 13.64kWh/t and 17.12kWh/t respectively. In order to predict aggregate quality, Bond work index (Wi) of samples were correlated with aggregate crushing value (Xacv) and aggregate impact value (Xaiv). Hence, the Bond work index values ranging between 0-7kWh/t, 7-10kWh/t, 10-14kWh/t, 14-18kWh/t and >18kWh/t are classified as ‘very easy’, ‘easy’, ‘medium’, ‘difficult’ and ‘very difficult’ respectively. It was shown that rock samples with work index values >10 kWh/t are qualified for use in flexible road pavement construction.
Keywords:
Rock; mineral; Bond work index, grinding energy; aggregate; road pavement; aggregate crushing value; aggregate impact value, hardness; constructionReferences:
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