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
- Sokoto State University, Sokoto, Sokoto State 42
- St. Albert The Great Major Seminary, Abeokuta. (affl. To University of Benin) 1
- Sule Lamido University, Kafin Hausa, Jigawa State 4
- Tai Solarin University of Education, Ijagun, Ogun State 18
- Tansian University, Oba, Anambra State 1
- Taraba State University, Jalingo, Taraba State 32
- Temple-Gate Polytechnic, Osisioma, Abia State 1
- The Oke-Ogun Polytechnic, Saki, Oyo State 6
- The Polytechnic, Ibadan, Oyo State 13
- THOMAS ADEWUMI UNIVERSITY, OKO-IRESE, KWARA STATE 1