Evaluation of mechanical performance and modification mechanism of asphalt modified with graphene oxide and warm mix additives

Liu, Kefei; Zhang, Kun; Wu, Junliang; Muhunthan, Balasingam; Shi, Xianming

doi:10.1016/j.jclepro.2018.05.040

Cited by 97 publications

(32 citation statements)

References 44 publications

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“…The medium‐temperature performance was evaluated using the fatigue parameter, G *sin δ . The G */sin δ values and fatigue temperatures of the binders were measured and calculated on the basis of the DSR test of aged asphalt, and the results are presented in Figure .…”

Section: Resultsmentioning

confidence: 99%

“…Some studies have indicated that waste oil can improve the low‐temperature performance of asphalt binders and the thermal cracking resistance, but decrease the rutting resistance of asphalt . Existing studies have proved that WCO can be used as an additive in asphalt . However, because of differences in the sources of WCO and the preparation processes, the effects of WCO on the modification of asphalt are also somewhat different.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of physiochemical and rheological properties of waste cooking oil/SBS/EVA composite modified petroleum asphalt

Liu

Zhou²,

Peng³

et al. 2019

J of Applied Polymer Sci

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The objective of this research is to investigate the physiochemical and rheological properties of waste cooking oil (WCO)/styrene‐b‐butadiene‐b‐styrene/ethylene vinyl acetate (SBS/EVA) composite modified asphalt. A petroleum asphalt composite modified with SBS/EVA and oil/SBS/EVA were prepared to undergo the physical, rheological, and microscopic experiments. Comparing these tests results with the properties of unmodified petroleum asphalt, SBS and EVA cause an improvement in pavement performance, but weaken the storage stability. Although the high‐temperature performance undermined by the addition of WCO, the thermal stability, fatigue property, and low temperature crack resistance improved obviously. In addition, WCO mainly composed by low‐weight components, and these can supplement the light components in the polymer‐modified asphalt. EVA could increase the percentage of large molecular size of asphalt, while WCO relieves this trend. The reactions between WCO and these polymers (SBS and EVA) are physical reactions. Atomic force microscopy morphology results reflect that SBS and EVA increase the surface complexity and roughness, and WCO makes the asphalt surface smooth. This indicates WCO increases the dispersion of polymers in asphalt. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48828.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation of physiochemical and rheological properties of waste cooking oil/SBS/EVA composite modified petroleum asphalt

Liu

Zhou²,

Peng³

et al. 2019

J of Applied Polymer Sci

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show abstract

“…In addition, the failure performance temperature T m is defined as the critical temperature when the m-value of an asphalt is equal to 0.300 minus 10 • C. The lower the failure temperature, the better the crack resistance of asphalt [68]. The T m value of Ao, A R1 and A R2 is −16.71 • C, −13.00 • C and −15.08 • C, respectively.…”

Section: Low-temperature Propertymentioning

confidence: 99%

Preparation and Properties of Wood Tar-based Rejuvenated Asphalt

Zhang

Zhu

Wu³

et al. 2020

Materials

Self Cite

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In order to explore the applicability of the rejuvenated asphalt with wood tar as the main raw material, the orthogonal test was used to determine the optimal ratio of wood tar-based rejuvenator. The physical properties, rheological properties and components of matrix asphalt, aged asphalt, wood tar-based rejuvenated asphalt and commercial RA-102# rejuvenated asphalt were tested and compared. The results show that the optimal ratio of wood tar-based rejuvenator is 15wt% wood tar, 0.3wt% biomass fiber, 5wt% plasticizer, 0.3wt% compatibilizer, and 1wt% stabilizer of the mass of aged asphalt. Wood tar-based rejuvenator can restore the physical properties of the aged asphalt to meet the specification requirements. The synergistic effect of biomass fiber and plasticizer make the wood tar-based rejuvenated asphalt has good resistance to accumulated permanent deformation, but its low-temperature cracking resistance needs to be further improved. During the rejuvenation process of aged asphalt, the colloidal state changes from gel-state to sol-state, characterizing that the viscosity of asphalt decreased and the fluidity increased. Wood tar-based rejuvenator can react with aged asphalt to weaken the vibration strength of carbonyl and sulfoxide groups, so as to realize the recovery of service performance. Wood tar-based rejuvenator has better environmental protection and applicability, which is worthy of further study and promotion.

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“…WMA makes it possible to construct highways in plateau regions, which has always been difficult to accomplish as these areas have low air pressure, low average annual air temperature, a fragile ecological environment, and short construction season. These can cause the hot mix asphalt mixture to cool rapidly, and thus, leads to insufficient compacting and inadequate performance [ 9 ]. Engineers try to produce HMA (Hot mix asphalt) asphalt mixtures at the appropriate mixing temperature and complete the construction before the minimum compaction temperature WMA technology allows.…”

Section: Introductionmentioning

confidence: 99%

Influence of Ultraviolet and Oxygen Coupling Aging on Rheological Properties and Functional Group Index of Warm Mix Asphalt Binder

Tong

Zhang

et al. 2020

Materials

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Warm-mixed asphalt (WMA) has the characteristics of low mixing temperature and energy consumption, which makes it more suitable than hot-mixed asphalt for plateau regions (the altitude is above 500 m, and the terrain is relatively flat or has a wide area with certain undulations). However, WMA is subject to severe ultraviolet (UV) aging because the UV radiation in plateau areas is more intense. The asphalt’s aging changes its rheological properties inevitably, and thus degrades the asphalt pavement’s performance. Accordingly, the purpose of this paper is to investigate the effect of UV and oxygen coupling aging on WMA’s rheological properties and functional group index. Temperature and frequency sweep tests were performed with a dynamic shear rheometer. At the same time, the functional group index was used as an indicator to compare the changes in the WMA’s infrared spectrum before and after UV aging. The results showed that WMA’s elasticity increased and its viscosity decreased after aging with UV. Under the condition of UV–oxygen isolation, as the aging period increased, the WMA’s rutting factor increased gradually. The degree of improvement was greater than that under the condition of oxygen isolation. In contrast, the time required for the WMA’s complex shear modulus to recover under the condition of UV–oxygen coupling was delayed. An increase in the peak value of infrared spectrum indicates that the WMA has undergone oxygen aging. The presence and change in the carbonyl group reflects the degree of the WMA’s UV aging, and the UV aging condition had a greater effect on the peak values of the carbonyl and sulfoxide groups.

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Evaluation of mechanical performance and modification mechanism of asphalt modified with graphene oxide and warm mix additives

Cited by 97 publications

References 44 publications

Investigation of physiochemical and rheological properties of waste cooking oil/SBS/EVA composite modified petroleum asphalt

Investigation of physiochemical and rheological properties of waste cooking oil/SBS/EVA composite modified petroleum asphalt

Preparation and Properties of Wood Tar-based Rejuvenated Asphalt

Influence of Ultraviolet and Oxygen Coupling Aging on Rheological Properties and Functional Group Index of Warm Mix Asphalt Binder

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