Evaluation of Fatigue Cracking in Asphalt Mixtures Based on Surface Energy

Lin, Cong; Peng, Jintang; Guo, Zhongyin; Wang, Qian

doi:10.1061/(asce)mt.1943-5533.0001465

Cited by 36 publications

(8 citation statements)

References 6 publications

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“…Another study [ 225 ] compared the fatigue properties of SBS and PET modified bitumen and found that both SBS and PET mixes improved the fatigue response but SBS blends showed better fatigue behaviour than PET blends. According to Cong et al [ 226 ] fatigue behaviour is proportional to the surface energy, as the greater the surface energy, the higher the fatigue life will be. It was also found that the surface energy of SBS modified binder was higher than that of the neat bitumen, hence, SBS modification resulted in improved fatigue life.…”

Section: Virgin and Waste (Recycled) Plastomers To Improve Bitumen Performancementioning

confidence: 99%

Sustainable Polymers from Recycled Waste Plastics and Their Virgin Counterparts as Bitumen Modifiers: A Comprehensive Review

2021

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The failure of bituminous pavements takes place due to heavy traffic loads and weather-related conditions, such as moisture, temperature, and UV radiation. To overcome or minimize such failures, a great effort has been put in recent years to enhance the material properties of bitumen, ultimately improving field performance and increasing the pavement service life. Polymer modification is considered one of the most suitable and by far the most popular approach. Elastomers, chemically functionalised thermoplastics and plastomers * (* Note: notwithstanding the fact that in Polymer Science the word ‘plastomer’ indicates a polymer with the simultaneous behaviour of an elastomer and plastics (thermoplastics), this paper uses the term ‘plastomer’ to indicate a thermoplastic polymer as it is more commonly found in Civil and Pavement Engineering.) are the most commonly used polymers for bitumen modification. Plastomers provide several advantages and are commonly acknowledged to improve high-temperature stiffness, although some of them are more prone to phase separation and consequent storage instability. Nowadays, due to the recent push for recycling, many road authorities are looking at the use of recycled plastics in roads. Hence, some of the available plastomers—in pellet, flakes, or powder form—are coming from materials recycling facilities rather than chemical companies. This review article describes the details of using plastomers as bitumen modifiers—with a specific focus on recycled plastics—and how these can potentially be used to enhance bitumen performance and the road durability. Chemical modifiers for improving the compatibility between plastomers and bitumen are also addressed in this review. Plastomers, either individual or in combination of two or three polymers, are found to offer great stiffness at high temperature. Different polymers including HDPE, LDPE, LLDPE, MDPE, PP, PS, PET, EMA, and EVA have been successfully employed for bitumen modification. However, each of them has its own merit and demerit as thoroughly discussed in the paper. The recent push in using recycled materials in roads has brought new light to the use of virgin and recycled plastomers for bitumen modification as a low-cost and somehow environmental beneficial solution for roads and pavements.

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Section: Virgin and Waste (Recycled) Plastomers To Improve Bitumen Performancementioning

confidence: 99%

Sustainable Polymers from Recycled Waste Plastics and Their Virgin Counterparts as Bitumen Modifiers: A Comprehensive Review

2021

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“…Thus, it can be seen that the control mode plays a critical role in the evaluation of asphalt mixture fatigue properties. In view of this, many researchers only 2 Advances in Materials Science and Engineering use one control mode to evaluate asphalt mixture properties and construct fatigue damage models considering modulus, dissipated energy, and accumulative energy [13][14][15][16]. Some studies concentrated on the differences and relations between the two control modes, trying to unify the evaluation indexes [17][18][19][20] or to convert one to another [21].…”

Section: Introductionmentioning

confidence: 99%

Fatigue Evaluation of Recycled Asphalt Mixture Based on Energy-Controlled Mode

Cui

Huang

2017

Advances in Materials Science and Engineering

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The fatigue properties of asphalt mixtures are important inputs for mechanistic-empirical pavement design. To understand the fatigue properties of asphalt mixtures better and to predict the fatigue life of asphalt mixtures more precisely, the energy-controlled test mode was introduced. Based on the implementation theory, the laboratory practice for the energy-controlled mode was realized using a four-point-bending fatigue test with multiple-step loading. In this mode, the fatigue performance of typical AC-20 asphalt specimens with various reclaimed asphalt pavement (RAP) contents was tested and evaluated. Results show that the variation regulation of the dissipated energy and accumulative energy is compatible with the loading control principle, which proves the feasibility of the method. In addition, the fatigue life of the asphalt mixture in the energy-controlled mode was between that for the stress-controlled and strain-controlled modes. The specimen with a higher RAP content has a longer fatigue life and better fatigue performance.

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“…Altos valores de trabajo de adhesión en seco denotan interfases con alta resistencia a la fractura, que conllevan a alta resistencia a la fatiga [22]. Por su parte, valores absolutos bajos de trabajo de adhesión en húmedo identifican interfases asfalto-agregado con baja susceptibilidad al daño por humedad.…”

Section: Calidad De Adhesiónunclassified

Calidad de adhesión y propiedades reológicas de asfaltos residuales, no modificados y nano-modificados, obtenidos de crudos pesados de pavimentación

Álvarez¹,

Ovalles²,

Rodriguez³

et al. 2019

DYNA

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Los crudos pesados de pavimentación (CPP) constituyen asfaltos líquidos naturales que pueden ser empleados en soluciones de pavimentación no convencionales para vías de tránsito bajo y medio por su menor costo en comparación con el de cementos asfálticos convencionales (i.e., producidos mediante refinación de crudos de petróleo). A pesar de su potencial, la caracterización y el uso de CPP en pavimentación vial son aún limitados. Este estudio evalúa la calidad de la adhesión y las propiedades reológicas de asfaltos residuales (AR), no modificados y nano-modificados, obtenidos de CPP. Los resultados sugieren que los AR ofrecen menor rigidez y desarrollan interfases asfalto-agregado con menor calidad de adhesión que las generadas por el asfalto convencional de control. En general, el nano-modificador redujo la rigidez de los AR, y aunque mejoró la adhesión en seco, no redujo la susceptibilidad al daño por humedad en las interfases asfalto-agregado. Se sugiere investigación futura que valide los resultados a través de la evaluación de mezclas asfálticas.

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Evaluation of Fatigue Cracking in Asphalt Mixtures Based on Surface Energy

Cited by 36 publications

References 6 publications

Sustainable Polymers from Recycled Waste Plastics and Their Virgin Counterparts as Bitumen Modifiers: A Comprehensive Review

Sustainable Polymers from Recycled Waste Plastics and Their Virgin Counterparts as Bitumen Modifiers: A Comprehensive Review

Fatigue Evaluation of Recycled Asphalt Mixture Based on Energy-Controlled Mode

Calidad de adhesión y propiedades reológicas de asfaltos residuales, no modificados y nano-modificados, obtenidos de crudos pesados de pavimentación

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