Effect of RAP content on fatigue performance of hot-mixed recycled asphalt mixture

Yin, Peng; Pan, B.

doi:10.1016/j.conbuildmat.2022.127077

Cited by 24 publications

(10 citation statements)

References 33 publications

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“…Both of steel slag RAM and basalt RAM reveal a downward trend of fatigue life as RAP dosage increases. The conclusion is inconsistent with Yin et al’s results [ 12 ]. This is due to the increase in the stiffness of blended asphalt and reduction in the response rate to stress for RAM [ 43 ].…”

Section: Resultscontrasting

confidence: 92%

“…BPN of basalt RAM with 50% RAP decreases by 20% and only reaches to 52, which is lower than 11 that of steel slag RAM and also arrival design constrain. [12]. This is due to the increase in the stiffness of blended asphalt and reduction in the response rate to stress for RAM [43].…”

Section: Skid Resistancementioning

confidence: 99%

“…Yin et al endorsed the fact that the moisture stability of recycled asphalt mixtures revealed a descending trend with the addition of RAP. He pointed that hot-mix recycled asphalt mixture (HRAM) exhibited a greater fatigue life than new asphalt mixture (NAM), and its fatigue life increased with the ascending RAP dosage [ 12 ]. This is due to generation of a loading buffer interface between aged asphalt and rejuvenator.…”

Section: Introductionmentioning

confidence: 99%

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Quantitative Assessment of Road Performance of Recycled Asphalt Mixtures Incorporated with Steel Slag

Wang

Yang

et al. 2022

Materials

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Circular utilization of reclaimed asphalt pavement (RAP) has received extensive attention for its economic and environmental benefits. The application of recycled asphalt mixtures (RAM) in the upper layer of asphalt pavement faces the issue of inferior anti-slip performance and durability. This study aims to recycle steel slag as virgin aggregates in RAM and quantitatively evaluate the service performance of RAM with steel slag. Steel slag and basalt RAM were firstly fabricated and the five different RAP contents were involved. Then tests of Marshall stability, indirect tensile strength and Cantabro spatter loss were conducted to investigate the moisture susceptibility of RAM. Moreover, their high temperature stability, crack resistance and skid resistance were characterized. Indirect tensile fatigue test combined with Hamburg wheel tracking test were carried out to discuss the durability of RAM. The comprehensive performance of RAM with steel slag were quantitatively assessed based on an improved radar chart evaluation method. The results show that involving steel slag reveals a remarkable enhancement function on water stability, high and low temperature performance, skid resistance and fatigue resistance of RAM. Steel slag RAM with 50% RAP content demonstrates a rutting depth of 7.60 mm and a creep slope of 2.54 × 10−4, indicating its superior durability in high temperature and water environment. Compared with the comprehensive evaluation function of 0.5336 for basalt RAM with 30% RAP dosage, steel slag RAM reaches 0.7801, which represents its preferable road performance.

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Section: Resultscontrasting

confidence: 92%

Section: Skid Resistancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Quantitative Assessment of Road Performance of Recycled Asphalt Mixtures Incorporated with Steel Slag

Wang

Yang

et al. 2022

Materials

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“…Thus, several experimental efforts have been done until now to evaluate the influence of RAP addition on the workability, physical, mechanical, strength, crack growth, and fatigue life of asphaltic mixtures. [30][31][32][33][34][35][36][37][38][39][40] For example, Poulikakos et al 41 studied the effect of short-and long-term aging on chemical, microstructure, and mechanical properties of RAP materials. Al-shamayleh et al 42 also investigated the mechanical properties of asphaltic mixtures with variable RAP contents.…”

Section: Introductionmentioning

confidence: 99%

“…However, due to aging of bitumen of RAP material, the overall mechanical properties of asphalt mixtures made of RAP may probably less than the control mixture made of virgin raw materials. Thus, several experimental efforts have been done until now to evaluate the influence of RAP addition on the workability, physical, mechanical, strength, crack growth, and fatigue life of asphaltic mixtures 30–40 . For example, Poulikakos et al 41 studied the effect of short‐ and long‐term aging on chemical, microstructure, and mechanical properties of RAP materials.…”

Section: Introductionmentioning

confidence: 99%

Comparative cracking resistance‐cost study for the hot mix asphalt (HMA) mixtures made of natural and recycled asphaltic materials

Ghoroghi,

Haghighatpour,

Aliha

et al. 2023

Fatigue Fract Eng Mat Struct

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Cracking performance of control and RAPed hot mix asphalt (HMA) mixtures was studied under low and medium temperatures. The effects of recycled asphalt pavement (RAP) content (0 and 50%), compaction method, and temperature (−20, 0 and +20°C) on KIf and KIIf were investigated. Cracking resistances of both modes showed similar trends. The fracture toughness of RAPed mixture at +20°C was higher than the control mixture. However, at −20°C, KIf and KIIf obtained from the RAPed mixture were about 22% lower than control mixture. A cost analysis was performed to compare the manufacturing costs of both mixtures. Accordingly, the cost of HMA mixture containing 50% RAP was 26% less than the control mixture. The proposed life‐cost index in the RAPed mixture was 10, 25, and 100% greater than the control mixture at −20, 0, and +20°C, respectively. Temperature and RAP content had the most important impacts on fracture toughness and cost, respectively.

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Interfacial interaction behavior of recycled asphalt pavement: Molecular dynamics simulation

Tan,

Xie,

Song

et al. 2023

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Effect of RAP content on fatigue performance of hot-mixed recycled asphalt mixture

Cited by 24 publications

References 33 publications

Quantitative Assessment of Road Performance of Recycled Asphalt Mixtures Incorporated with Steel Slag

Quantitative Assessment of Road Performance of Recycled Asphalt Mixtures Incorporated with Steel Slag

Comparative cracking resistance‐cost study for the hot mix asphalt (HMA) mixtures made of natural and recycled asphaltic materials

Interfacial interaction behavior of recycled asphalt pavement: Molecular dynamics simulation

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