Effects of Aggregate Size on the Rutting and Stripping Resistance of Recycled Asphalt Mixtures

Kim, Sungun; Shen, Junan; Jeong, M. Myung

doi:10.1061/(asce)mt.1943-5533.0002139

Cited by 14 publications

(8 citation statements)

References 6 publications

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“…The research determined that the aforementioned HWTT indicators can indicate the moisture susceptibility of reclaimed asphalt material with different asphalt binder contents. Kim et al [ 12 ] used the number of loading passes at failure, rut depth at 20,000 wheel passes, SIP, creep slope, and stripping slope in the HWTT to evaluate the rutting resistance and moisture susceptibility of the asphalt mixture. The results revealed that the number of loading passes at failure, rut depth at 20,000 wheel passes, and SIP are related to the nominal maximum aggregate size (NMAS) and that the creep slope is not significantly related to NMAS.…”

Section: Introductionmentioning

confidence: 99%

Establishing Indicators and an Analytic Method for Moisture Susceptibility and Rutting Resistance Evaluation Using a Hamburg Wheel Tracking Test

Wang

Huang

2020

Materials

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The Hamburg wheel tracking test (HWTT) is widely used to evaluate the performance of asphalt mixtures. According to HWTT specifications, the stripping inflection point (SIP) and the rut depth at a certain number of load cycles are two common indicators for evaluating the moisture susceptibility and rutting resistance of asphalt mixtures, respectively. Although these indicators have been used extensively by several transportation institutions, the reliability and stability in evaluating asphalt mixture behaviors of these indicators have been questioned. To more effectively evaluate the performance of asphalt mixture in the HWTT, this study introduces a novel method of analysis for the HWTT and novel indicators of rutting resistance and moisture susceptibility. The proposed method and indicators were employed to analyze the HWTT results of 14 field core specimens, and the proposed indicators were compared with conventional HWTT indicators to assess their capability of distinction between asphalt mixtures with different performance behaviors in the HWTT. The results indicate that the conventional HWTT indicators cannot effectively evaluate the asphalt mixtures with different performance in the HWTT. By contrast, the proposed analytic method and indicators have significant advantages to effectively evaluate and distinguish the rutting resistance and moisture susceptibility of asphalt mixtures.

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Section: Introductionmentioning

confidence: 99%

Establishing Indicators and an Analytic Method for Moisture Susceptibility and Rutting Resistance Evaluation Using a Hamburg Wheel Tracking Test

Wang

Huang

2020

Materials

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“…Since the HWTT was introduced in the United States, multiple research studies have been undertaken to evaluate the rutting and stripping susceptibility of asphalt mixtures ( 2 , 3 , 5 , 7 ). These projects have identified various influential factors that affect the resistance of asphalt mixtures to rutting and stripping.…”

Section: Introductionmentioning

confidence: 99%

“…These projects have identified various influential factors that affect the resistance of asphalt mixtures to rutting and stripping. For example, Kim et al investigated the effects of the nominal maximum aggregate size (NMAS) on the rutting and stripping resistance of pavements in Georgia ( 2 ). They evaluated Superpave mixtures with five different NMAS values at three different test temperatures and observed that as the NMAS decreases, the rut depth increases, and as the NMAS increases, the SIP decreases ( 2 ).…”

Section: Introductionmentioning

confidence: 99%

“…Rutting affects ride quality and can significantly reduce the service life of affected pavement sections. Severe cases of rutting can detrimentally affect driver safety because deep ruts can lead to pooling water that increases the possibility of vehicle hydroplaning ( 2 ).…”

mentioning

confidence: 99%

“…In the United States, significant efforts have been expended over the last several decades to mitigate rutting-related problems in asphalt pavements. Two such efforts were the implementation of the performance grade (PG) asphalt binder specification and the Superpave mixture design approach in which tests are conducted under conditions that realistically represent those found in in-service pavements ( 1 , 2 ). The implementation of the Superpave design method has increased the use of mixtures that perform well ( 3 ); however, the method is not able to predict quantitatively the field performance of asphalt mixtures ( 3 ).…”

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confidence: 99%

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Asphalt Mixture Quality Acceptance using the Hamburg Wheel-Tracking Test

Batioja-Alvarez

Lee

Rahbar-Rastegar

et al. 2020

Transportation Research Record: Journal of the Transportation R

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This paper investigates the applicability of the Hamburg wheel-tracking test (HWTT) for asphalt mixture quality acceptance using laboratory-compacted specimens and field-compacted specimens. Density distribution functions for rut depths, stripping inflection points, and rutting resistance index (RRI) values used in the HWTT were obtained for mixtures with different nominal maximum aggregate size (NMAS) values and binder performance grades. Clear distinctions among the rut depth distributions for the high-temperature performance grade mixtures were observed in the laboratory-compacted specimens. The RRI values for both the laboratory and field-compacted specimens increased with an increase in the binder performance grade. In addition, the RRI values showed clear differences for different binder grades among the mixtures with the same NMAS. The range of the RRI distributions for the laboratory-compacted specimens was narrower than that of the field-compacted specimens. The stripping inflection points of the field-compacted specimens increased as the binder grade was increased, indicating better moisture damage resistance for stiffer mixtures. HWTT results were significantly influenced by the air voids content of specimens. The relationship between air voids content and RRI can be used for understanding the critical effect of in-place density in pavement performance. The laboratory-compacted and field-compacted specimens offer advantages and disadvantages. The laboratory-compacted specimens were much easier to fabricate to standard dimensions, and the field-compacted specimens present inherent variability in relation to air voids content, diameter, and thickness.

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Size Reduction Characterization of Underground Mine Tailings: A Case Study on Sandstones

Köken

2020

Nat Resour Res

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Effects of Aggregate Size on the Rutting and Stripping Resistance of Recycled Asphalt Mixtures

Cited by 14 publications

References 6 publications

Establishing Indicators and an Analytic Method for Moisture Susceptibility and Rutting Resistance Evaluation Using a Hamburg Wheel Tracking Test

Establishing Indicators and an Analytic Method for Moisture Susceptibility and Rutting Resistance Evaluation Using a Hamburg Wheel Tracking Test

Asphalt Mixture Quality Acceptance using the Hamburg Wheel-Tracking Test

Size Reduction Characterization of Underground Mine Tailings: A Case Study on Sandstones

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