Using DSR and MSCR tests to characterize high temperature performance of different rubber modified asphalt

Zhang, Lei; Xing, Chao; Gao, Fei; Li, Tianshuai; Tan, Yiqiu

doi:10.1016/j.conbuildmat.2016.10.010

Cited by 119 publications

(33 citation statements)

References 18 publications

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“…The average percent recovery ( R ) refers to the recovery ability of asphalt after creep. A higher R value indicates a stronger high-temperature resistance to deformation [ 31 ]. Figure 2 shows the variation of rutting factor, R , J nr after short-term aging and UV aging of base asphalt and rubber asphalt based on DSR and MSCR.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Influence of Different Aging Environments on Rheological Behavior and Structural Properties of Rubber Asphalt

2020

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Research on asphalt aging properties mainly focuses on temperature and ultraviolet (UV) radiation, while water, acid and salt media in natural environment are often ignored. According to the aging simulation of self-made UV environment chamber, the influence of the coupling effect of different media and UV radiation on rubber asphalt properties was analyzed through physical properties, rheological properties and micro characteristics, and the structural properties of asphalt were revealed. The results indicated that different media can accelerate the aging of rubber asphalt. The penetration, creep rate and non-recoverable creep compliance of asphalt decreased, while the softening point, rutting factor, recoverable rate, fatigue factor and stiffness modulus increased. The coupling effect between acid and UV radiation had the most impact on asphalt rutting and fatigue cracking. The rubber asphalt performed better at high-temperature after aging, and it was more prone to fatigue damage and performed worse at low-temperature. Through the oxygen absorption reaction causing asphalt aging, the intensity of the absorption peaks of the carbonyl and sulfoxide groups increased and the light components of the asphalt transitioned to heavy components under UV radiation. These media intensified this process, which resulted in the gradual transformation of the asphalt colloid structure into a gel type. The carbon black contained in the waste rubber powder made the rubber asphalt exhibit better anti-aging properties.

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Section: Resultsmentioning

confidence: 99%

“…Table 2 presents the physical and chemical parameters of the waste rubber powder. The rubber powder content was 20% (by weight of asphalt) according to the results of the literature review [ 31 , 32 , 33 ]. Table 3 presents the main properties of rubber asphalt.…”

Section: Materials and Experimental Methodsmentioning

confidence: 99%

Influence of Different Aging Environments on Rheological Behavior and Structural Properties of Rubber Asphalt

2020

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“…Crumb rubber was obtained by grinding waste tire and the maximum size of rubber particle was 60 mesh. The dosage of rubber powder was set to 20% of base asphalt grade 60/80 by weight according to the suggestion given in previous research [ 27 , 28 ]. The wet process was used to prepare RMA.…”

Section: Materials and Research Methodologiesmentioning

confidence: 99%

Feasibility Evaluation of Preparing Asphalt Mixture with Low-Grade Aggregate, Rubber Asphalt and Desulphurization Gypsum Residues

Zhang

Chen

et al. 2018

Materials

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Road construction consumes great amounts of high-grade natural resources. Using low-grade natural rocks or some solid wastes as substitute materials is a hot topic. Considering this, the feasibility of using low-grade granite aggregate, solid waste-based filler (desulphurization gypsum residues, DGR) and binder (waste tire rubber modified asphalt, RMA) simultaneously in asphalt mixtures has been fully investigated in this research. The commonly used base asphalt and limestone powder (LP) filler were control groups. Material characteristics of raw materials mainly including micro-morphology, functional group, mineral phase, chemical composition and thermal stability were first evaluated in order to recognize them. Four asphalt mixtures (two asphalt binder and two filler) were then designed by standard Superpave method. Finally, a detailed investigation into the pavement performance of asphalt mixtures was carried out. The moisture damage resistance and low-temperature crack resistance were detected by the changing rules of stability, strength and fracture energy, and the high-temperature stability and fatigue performance were determined by wheel tracking test and indirect tensile (IDT) fatigue test, respectively. Results suggested that RMA and DGR both showed positive effects on the low-temperature crack resistance and fatigue property of the granite asphalt mixture. DGR also strengthened moisture stability. The contribution of RMA on high-temperature deformation resistance of the granite asphalt mixture was compelling. It can offset the insufficiency in high-temperature stability made by DGR. A conclusion can be made that asphalt mixture prepared with granite, DGR and RMA possesses satisfactory pavement performances.

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“…The high temperature stability performance of asphalt mainly shows that it still has the ability to resist permanent deformation under the repeated shear at high temperatures, and the change of viscoelastic composition is relatively stable [18,19]. The following content will be analyzed from the complex modulus and damping factor of asphalt and their changing trends are displayed in Figure 1 and Table 4.…”

Section: High Temperature Stabilitymentioning

confidence: 99%

Silane Modification of Crumb Rubber on the Rheological Properties of Rubberized Asphalt

Zhang

Liu

Peng³

2019

Applied Sciences

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Because there is a lack of studies on rubberized asphalt based on silane coupling agent modification, KH-550 modified crumb rubber and rubberized asphalts incorporating normal rubber and modified rubber were prepared, respectively. The rheological properties of asphalt samples were evaluated by a dynamic shearing rheometer and a bending beam rheometer; then, mechanisms of KH-550 on rubber surface and functional group changes were analyzed by a Brunauer–Emmett–Teller specific surface area measurement and a Fourier transform infrared spectroscopy. The results imply that: (i) rubber surface area rises and chemical reactions accrue between rubber and asphalt; (ii) modified rubber achieves a more stable state within asphalt, which helps to enhance the mechanical properties of asphalt; (iii) modified rubber helps asphalt to dissipate stress so as to resist the formation of cracks and deformation under low temperature conditions.

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Using DSR and MSCR tests to characterize high temperature performance of different rubber modified asphalt

Cited by 119 publications

References 18 publications

Influence of Different Aging Environments on Rheological Behavior and Structural Properties of Rubber Asphalt

Influence of Different Aging Environments on Rheological Behavior and Structural Properties of Rubber Asphalt

Feasibility Evaluation of Preparing Asphalt Mixture with Low-Grade Aggregate, Rubber Asphalt and Desulphurization Gypsum Residues

Silane Modification of Crumb Rubber on the Rheological Properties of Rubberized Asphalt

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