A Study of Effectiveness of Thin Surface Treatments Using Hamburg Wheel Tracking Device

Rahman, Shaidur; Hossain, Mustaque; Nelson, Paul I.

doi:10.1061/41167(398)41

Cited by 3 publications

(5 citation statements)

References 1 publication

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“…For the mixes designed to both NMAS, increasing the binder content resulted in more rutting susceptibility, as expected. This result is in line with previous findings ( 19 , 21 ). However, because this effect is more pronounced with the 1/2 in.…”

Section: Resultssupporting

confidence: 94%

“…When performance tests are included in specifications, contractors must adjust their mix designs to meet those specifications. Studies have reported that rut depth is sensitive to the binder performance grade (PG); aggregate gradation; recycled materials such as recycled asphalt pavement (RAP) and recycled asphalt shingles (RAS); and binder modification (19)(20)(21)(22). Generally, the use of RAP or RAS, a low binder content, and a stiff binder grade will improve the rutting resistance of asphalt mixes (10,22).…”

mentioning

confidence: 99%

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Study of Measures to Design Asphalt Mixes Including High Percentages of Recycled Asphalt Pavement and Recycled Asphalt Shingles

Mivehchi

Wen

et al. 2022

Transportation Research Record: Journal of the Transportation R

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With the increased use of recycled materials and various additives, the performance of asphalt mixes, especially their cracking resistance, has become a primary concern. Researchers have developed performance test methods and parameters to simulate field performance in the laboratory. When these performance tests are included in specifications, contractors must adjust their mix design parameters accordingly. To aid contractors, this study evaluated rut depths obtained from Hamburg wheel-tracking tests of 261 asphalt mixes and cracking test (CT) index values from IDEAL-CT tests of 69 mixes designed by contractors and verified by the Washington State Department of Transportation. These mixes had different gradations; binder contents; air void contents; recycled asphalt pavement (RAP); recycled asphalt shingles (RAS); recycling agents; binder performance grades; and other volumetric properties. The results show that (1) rut depth is highly sensitive to binder content, performance grade, aggregate angularity, and RAP/RAS content and (2) the CT index is sensitive to binder content, air void content of the mixture, aggregate gradation, and RAP/RAS content. The low-RAP mixes also showed worse cracking performance than the mixes without RAP. Therefore, the performance grade of blended binder may need to match the target binder grade even for low-RAP mixes. It was found that the design air void of 3.5% is optimal in respect of cracking resistance. The use of softer virgin binder or rejuvenator may not be effective in completely mitigating the cracking potential of high-RAP/RAS mixes.

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Section: Resultssupporting

confidence: 94%

mentioning

confidence: 99%

Study of Measures to Design Asphalt Mixes Including High Percentages of Recycled Asphalt Pavement and Recycled Asphalt Shingles

Mivehchi

Wen

et al. 2022

Transportation Research Record: Journal of the Transportation R

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“…Stripping inflection point is the intersection point of the creep slope and stripping slope, in actual is the number of passes at that point. Stripping slope is after stripping inflection point and is an inverse rate of deformation and continues till the end of the test [ 34 ].…”

Section: Methodsmentioning

confidence: 99%

“…By corelating the rutting susceptibility and mixture properties, it is possible to get a good idea of the optimized mixture design to be chosen by road design experts [ 28 , 29 , 30 , 31 ]. For investigating the rut depth effect, aggregate size regression models were framed for determining the independent variable importance with output of rut value of asphalt specimens which comes under cycling loading [ 32 , 33 , 34 , 35 , 36 ].…”

Section: Introductionmentioning

confidence: 99%

Investigation on Hamburg Wheel-Tracking Device Stripping Performance Properties of Recycled Hot-Mix Asphalt Mixtures

et al. 2020

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Moisture damage in hot mix asphalt pavements is a periodic but persistent problem nowadays, even though laboratory testing is performed to identify different moisture-susceptible mixtures. In this study, a Hamburg Wheel Tracking device (HWTD) was used for rutting tests which were conducted on control and a high percentage of recycled asphalt pavement (RAP), i.e., 30%, 50% and 100% of virgin mixtures, under air dry and water-immersed conditions. Similarly, the extracted bitumen from RAP was tested for binder physical properties. Results showed that the asphalt mixtures containing RAP have less rut depth as compared to the control mix both in air dry and immersion conditions and hence showed better anti-rutting properties and moisture stability. Stripping performance of control and RAP containing mixtures was also checked, concluding that the RAP mixture was greatly dependent on the interaction between the binder (virgin plus aged) and aggregates.

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“…The experimental results revealed that the Georgia loaded-wheel tester demonstrated a significant relationship between rutting and the rheological properties of the binders; the HWTT and French pavement rutting tester failed to yield the same result. In addition, a number of researchers employed the HWTT to evaluate the effects of aggregate properties, aggregate gradation, types of asphalt, short-term aging, and temperature on asphalt mixtures [ 5 , 6 , 7 , 8 , 9 , 10 ] and proposed different rutting resistance and moisture susceptibility indicators for the HWTT. Uppu et al [ 11 ] used the number of wheel passes, creep slope, and SIP as indicators to evaluate the moisture susceptibility of reclaimed asphalt material with different asphalt binder contents.…”

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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A Study of Effectiveness of Thin Surface Treatments Using Hamburg Wheel Tracking Device

Cited by 3 publications

References 1 publication

Study of Measures to Design Asphalt Mixes Including High Percentages of Recycled Asphalt Pavement and Recycled Asphalt Shingles

Study of Measures to Design Asphalt Mixes Including High Percentages of Recycled Asphalt Pavement and Recycled Asphalt Shingles

Investigation on Hamburg Wheel-Tracking Device Stripping Performance Properties of Recycled Hot-Mix Asphalt Mixtures

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

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