The evaluation of adhesion between asphalt binders and modified properties of gilsonite aggregates plays a fundamental role in the resistance of the mixture to moisture damage and fatigue cracking. Self-healing is another inherent property of asphalt binder that has to do with the durability of the mix. While much effort has been devoted to understanding these individual properties, little research has focused on evaluating the adhesive behavior of binder aggregate systems including effects from adherent self-healing. The test procedure was used to evaluate the compound effects of the adhesion and self-healing property of five representative modified asphalt binders with modifiers varies with multiple amounts. The results show that linear styrene–butadiene styrene (SBS), high-density polyethylene (HDPE), crumb rubber, and terminal blend (TB) rubber-modified binders have a negative effect on the bond strength of the ligand systems self -healing the properties. But good doses of them. In addition, the measured bond strength recovery capacity of the tested binders correlates very well with the fatigue performance of their blends obtained by four-point beam (4PB) fatigue tests. 
This indicates that the proposed method can provide a better understanding of the pavement performance of the modified links. In addition, Fourier transform infrared spectroscopy (FTIR) tests were performed to study the mechanism of the modifiers on the improvement of the long-term adhesive behavior of the binder in the context of chemical reaction. It is found that the methylene plus methyl hydrogen carbon (MMHC) index of the FTIR spectrum of the modified binders is in control of their self-healing and aggregate selective adsorption of their long-chain molecules and shows good agreement with binding -strong recovery The ratios. Bond strength between asphalt and aggregate is an important parameter to evaluate the ability of the bond to resist moisture-induced damage The effects of various modifiers and additives on bond strength and self-healing property of asphalt were investigated using bond strength test (BBS). Three new indices were introduced in this work, namely, restored grip strength, total pull strength, and healing ratio. In addition, the effect of complex modulus on bond strength was studied using dynamic shear rheometer test. 
Permanent deformation in asphalt mix, also known as rutting, is one of the most important afflictions observed in asphalt pavements Rutting in asphalt mix layer is a permanent deformation of the asphalt layer near the surface. Since the binder phase is responsible for the viscous behavior of the mix, it plays a major role in determining many aspects of pavement performance such as resistance to permanent deformation This phenomenon is most important during the hot season during the first period of pavement life due to the low stiffness of the asphalt dam. Modifiers are added to the asphalt binder to strengthen the asphalt pavements against damage. Polymers used for bond modification can be divided into two broad categories: plastomers and elastomers. Do plastomers add adhesive? strength and stiffness, while elastomers are known to enhance stiffness and elastic response. Elastic and viscous response of binders are important aspects in the behavior of polymer modified binders and believed to play an important role in asphalt mix rut resistance, although the exact nature of its effect is not well known Finite element simulation and image analysis were used to study the effect of the component. Finite element methods provide data that cannot be obtained directly from experiments and are not easily accessible, such as information about the local stress and strain distribution of components in the aggregate structure A multiscale approach was developed and applied to investigate asphalt mix performance at multiple scales. 
The viscoelastic properties of the moorings used in the analysis were obtained from the analysis of the rheological data obtained using the Dynamic Shear Rheometer (DSR) and consequently used to determine the viscoelastic properties of the mast scale. The reaction of the mastic scale was applied to the mortar scale. Finally, the response to the mortar scale provided input to the asphalt mixture scale. The results of this thesis prove the hypothesis that the elastic properties and viscous properties of binders affect the rut resistance of hot mix asphalt. It has been shown that mixtures with binders containing more viscous components (lower static strain) have lower static strain. It is also concluded that for binders with the same static stress under the same phase stress (same viscous component), the more elastic response of the bond leads to the lower static stress of the asphalt mixture. However, the effect of elastic component on rutting is small compared to the effect of viscous component of asphalt binder Regarding aggregate gradation, it was shown that a well-ordered intermediate gradation is capable of generating efficient particle networks at micro- and macro-scale, thus all scales of asphalt mixture but the bond stress level is reduced. 
Sorting of very fine aggregates could prevent efficient formation of the aggregate skeleton on a macro scale. On the other hand, the use of coarser gradation leads to lower volume fractions of fine particles, prevents web formation and softer mastic mortar matrix shown that the asphalt mix composition changes continuously during repeated creep load testing. At the end of the secondary rutting zone, it is assumed that large deformations begin in the asphalt mix resulting in a deterioration of the aggregate structure This stage is the beginning of the tertiary zone of rutting. This study focuses on the effect of elastic component and viscous component of binder response on the rutting resistance of asphalt mixtures in primary and secondary zones where the mixture structure is not severely degraded due to the onset of large deformations. The result of this study clearly shows that blends with binders and more viscous components exhibit less permanent deformation. In such a case, the influence of the bond viscous properties on the rutting resistance of the asphalt mixture is considerably greater than its elastic response.
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