The Price of Asphalt Road Can Differ Due to Their Various Qualities and Uses in Construction and in Using Gilsonite Modified Bitumen, Such as Good Workability and Durability.
Asphalt Road Construction
It is one of the most common materials used in asphalt mixtures for road pavements.
Asphalt mixtures and blocks can be improved by modifying them with various additives.
Gilsonite is a natural asphalt hydr + ocarbon that can be used as an additive for the hot mixing of asphalt.
It is used as an asphalt binder modifier (wet process) and an asphalt mixing modifier to improve mix properties.
It offers a choice of enhanced rheological properties, stability, resistance to tear strength, and moisture sensitivity.
This article reviews current research on the use of gilsonite to improve the properties of asphalt.
Asphalt Road Construction Features
Characterization of the physical properties of gilsonite: a brittle black mineral that is simply crushed into a powder and used in many industrial contexts.
At the beginning of the process, the natural asphalt binder material must be separated from the underground stone reservoir and exploited by the faults of the ground layer.
If left underground or near the surface of the earth, it can undergo a continuous process of hardening and oxidation, ending up as a solid, hard asphalt binder.
Gilsonite is mainly available in Iran and America and can be easily mixed with asphalt binder due to its similar structure.
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HMA is a mixture of two main components: aggregate and asphalt binder.
The degradation of HMA, including aging, low temperature, stress cracking, cracking, and moisture damage, is mostly due to the mechanical and rheological properties of the binder and asphalt mixtures.
The global consumption of asphalt has increased rapidly since the 20th century, and it is mostly used as a binder for asphalt mixtures for road construction and maintenance.
Bad asphalt not only reduces the service life of the pavement, but also causes other problems such as increased repair, early failure, increased maintenance costs, dangerous conditions for road users, and ultimately a lower level of safety.
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The results showed that when the two modifiers are mixed in the same binder, approximately 3-4% gilsonite is needed to replace 1% of SBS.
The results also showed that the viscosity of the modified binder was consistently lower than the viscosity of the SBS-modified binder.
This showed that adding gilsonite to SBS in the same binder can reduce the viscosity of the binder.
This decrease in the viscosity of the binder helps to reduce the compressive energy and improve the workability of the asphalt mixture during manufacture.
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