Influence of Filler Types on Stiffness of Asphalt Mixture
Student: Gospel Emmanuel Okon (Project, 2025)
Department of Civil Engineering
Akwa Ibom State University, Ikot-Akpaden, Akwa Ibom State
Abstract
Asphalt concrete which consists of coarse aggregate, fine aggregate, filler, and asphalt cement (used as a binder) mixed together in proportion according to a specification is an important composite material for road construction. In this study, the effect of using limestone dust as filler when compared to granite dust was investigated. Sixteen (16) specimens of asphalt mixtures made with limestone and granite filler (control) were produced, and the optimum bitumen content (O.B.C) based on 5.0%, 5.5%, 6.0% and 6.5% bitumen content was determined. Afterward mechanical properties such as Marshall stability, flow, and stiffness was determined. The results show that 6.0% was the optimum bitumen content (O.B.C) for the control and limestone filler. Moreover, the Marshall stability of limestone was 3.87KN higher than that of the control, while the flow and stiffness was 1.83mm and 2.37KN/mm for the limestone and granite dust. In conclusion, mix with limestone dust performs better than mix with granite dust in terms of stability.
Keywords
For the full publication, please contact the author directly at: gospelmichael280@gmail.com
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Institutions
- HASSAN USMAN KATSINA POLYTECHNIC (NCE), KATSINA, KATSINA STATE 4
- Hassan Usman Katsina Polytechnic, Katsina, Katsina State 5
- Heritage Polytechnic, Ikot Udota, Akwa Ibom State 46
- Hussaini Adamu Federal Polytechnic, Kazaure, Jigawa State 8
- Ibrahim Badamasi Babangida University, Lapai, Niger State 24
- Igbinedion University, Okada, Benin City, Edo State 2
- Ignatius Ajuru University of Education, Port Harcourt, Rivers State 8
- Imo State Polytechnic, Umuagwo, Owerri, Imo State 3
- Imo State University, Owerri, Imo State 45
- Institute of Management and Technology, Enugu, Enugu State 11