The orthogonal test was performed to identify the ideal ratio of wood tar-based rejuvenators in order to investigate the usability of the rejuvenated asphalt with wood tar as the primary raw material.
What Is Asphalt Wood Tar?
Matrix asphalt, aged asphalt, wood tar-based rejuvenated asphalt, and commercial RA-102# rejuvenated asphalt was evaluated and their physical, rheological, and component qualities were compared.
According to the findings, the ideal mixture of wood tar-based rejuvenator is 15 weight percent wood tar, 3 weight percent biomass fiber, 5 weight percent plasticizer, 3 weight percent compatibilizer, and 1 weight percent stabilizer of the mass of aged asphalt.
A rejuvenator made of wood tar can make the worn-out asphalt's physical characteristics conform to the specifications.
The wood tar-based rejuvenated asphalt shows good resistance to accumulated permanent deformation thanks to the synergistic action of biomass fiber and plasticizer, but there is still room for improvement in terms of low-temperature cracking resistance.
Features of Asphalt Wood Tar
The colloidal form of old asphalt goes from gel to sol during the rejuvenation process, indicating a reduction in viscosity and an increase in fluidity.
In order to achieve the recovery of service performance, a wood tar-based rejuvenator can interact with aged asphalt to reduce the vibrational strength of carbonyl and sulfoxide groups.
The environmental benefits and application of wood tar-based rejuvenators warrant further investigation and promotion.
Asphalt pavement is easily hardened, brittle, and cracks due to aging in the long-term service period, resulting in more serious rutting, cracking, loosening, and other forms of pavement diseases.
The Price of Asphalt Wood Tar
While maintaining and repairing damaged pavement, a significant amount of recovered asphalt pavement (RAP) will be created, which not only takes up space but also pollutes the environment.
A significant quantity of resources and money is also needed to replace RAP with fresh asphalt and its combination.
Because of this, using RAP not only conserves resources and lowers the price of asphalt pavement but also lessens the environmental pollution brought on by leftover asphalt materials, which has substantial positive effects on the economy, society, and environment.
Realizing the rejuvenation of worn-out asphalt and restoring its road performance is the key to RAP rejuvenation technology.
Interesting Facts About Purchasing Asphalt Wood Tar
In order to provide a uniform system for the complete decomposition of asphaltenes and the prevention of precipitation or flocculation.
the rejuvenation of aged asphalt currently predominantly consists of adding a rejuvenator containing a significant number of light components.
Numerous researchers examined the physical and rheological characteristics of rejuvenated asphalts using conventional testing, rotatory viscometer (RV), dynamic shear rheometer (DSR), and bending beam rheometer (BBR) methods.
Additionally, the rejuvenation mechanism was deduced from the micro-scale using components analysis (SARA) and Fourier infrared spectroscopy (FTIR), which also investigated the colloidal structure, intermolecular force, and modifications of chemical functional groups of rejuvenated asphalt.