Investigation of Reological Properties of Pure Bitumen Modified With Gilsonite

Document Type : Original Article

Authors

1 Master Student, Faculty of Engineering, Razi University, Iran.

2 , Assistant Professor, Faculty of Engineering, Razi University, Kermanshah, Iran.

3 Assistant Professor, Faculty of Engineering, Razi University, Iran.

4 Bachelor Degree, Technical Soil Mechanics Laboratory, Kermanshah, Iran

Abstract

The modifying of the rheological properties of pure bitumen to improve the performance of Asphalt mixtures has attracted many researchers in recent decades. The purpose of this study is to investigate the effect of Gilsonit on rheological properties of pure bitumen .For this purpose, different percentages of Gilsonite powder were used to modify the rheological properties of pure bitumen 60/70 .In the study of rheology of bitumen (modified and unmodified), viscosity test, softening point, penetration test and flash point were performed, in addition to, the thermal sensitivity of the bitumen was calculated. The results of this study indicate that the addition of Gilsonite to pure bitumen increases the viscosity and softening point and the penetration index of bitumen decreased. Also­, Gilsonite improves the thermal sensitivity of pure bitumen, but this bitumen powder has no effect on the flash point. Gilsonite and bitumen used in this research are from the mine of Ilam province and the Pasargad oil refinery, respectively.
 
 

Keywords

References

 
- افشاری، غ.، امامی، ح.، قلی پور، (1385)،"قیرهای اصلاح شده توسط گیلسونایت­، فورفورال اکسترکت و پلیمرها­" مجله علوم و تکنولوژی پلیمر.
 
- Ameri, M., Mansurian, A.,Salehi, S,Yadollahi,G (2010),”Technical study on the Iranian Gilsonite as an additive for modification of asphalt binders use in pavement construction”, Construction and Building Materials.
- Barth Edwin J. (1962), “Asphalt science and technology”, 3rd ed. New York: Gordon and Breach Science.
 
- F. Pretorius, J. Grobler, J. Onreat, (2004), “Development of a fit-for-propose product performance specification system for asphalt mixes”, J. Assoc. Asphalt Paving Technol.
-­“Gilsonite in paving application”.
-www.americangilsonite.com.
- Herbert Abraham. Asphalts and allied Substances. 5th ed. New York: D. Van Nostrand (1945), Co.
 
- H.R. Jahanian ,Gh. Shafabakhsh, H. Divandari,” (2017), “Performance evaluation of Hot Mix Asphalt (HMA) containing bitumen modified with Gilsonite”, pavement construction”, Construction and Building Materials.
 
-“Laboratory - Pavement Materials Penetration of Bituminous Materials”, Nanyang Technological University School of Civil and Structural Engineering.
 
 - Mark G. Bouldin, (2002),”Gilsonite modified hard pen binder study “American Gilsonite Company.
- S. M. sze Ho, Ludo Zsnzotta, (2002), “Impact of Different Types of Modification on Low Temperature Tensile Strength a Critical of Asphalt Binders”, Transportation Research Board.
 
- Use of Modified Bituminous Binders, (1999), “Special Bituminous and Bituminous and Bitumen’s with Additives in Road Pavements”, World Road Association (PIARC).
 
- www.zieglerchemical.com/gilsonite.htm.
 

Files

Share

How to cite

Statistics