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Showing 1 to 13 of 13 for “"Asphalt Pavement Analyzer"”.
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Evaluation of Superpave mixtures in West Virginia using the asphalt pavement analyzer
… tests have been developed to assess a pavement's distress; however, those tests are time-consuming and require special equipment. Simpler tests, such as wheel tracking devices, have been developed. The most common is the Asphalt Pavement Analyzer, APA, a loaded wheel tester method to …
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Evaluation of the compacted aggregate resistance test
… is a procedure used to analyze the quality of asphalt. It is a punch shear test that indirectly measures the shape and angularity of fine aggregates. The CAR test is in the developing process of replacing the current Superpave standard for fine aggregate angularity.;The primary objective of …
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Development of a rapid test to determine moisture sensitivity of HMA (Superpave) mixtures
… to determine moisture sensitivity in hot mix asphalt are time consuming and inconsistent. This research focused on wheel tracking devices to develop a rapid test method to evaluate moisture sensitivity. The Asphalt Pavement Analyzer (APA) and the Hamburg Wheel Tracking Device (HWTD) were used …
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Evaluation of 4.75 mm Superpave mix criteria for West Virginia
… Superpave mixes was performed. Additionally the Asphalt Pavement Analyzer, APA, was used to evaluate rutting performance of the Superpave mixes during both phases.;Based on the results of these evaluations, recommendations for Superpave mix design parameters for 4.75 mm NMAS mixes were developed. …
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Comparison of 19mm Superpave and Marshall Base II mixes in West Virginia
The Superior Performing Asphalt Pavements (Superpave(TM)) asphalt concrete mix design method was developed through Strategic Highway Program (SHRP) in 1993. With the introduction of Superpave mix design, the Marshall method of mix design is becoming obsolete for highway pavements. Superpave …
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Impact of Lime on the Mechanical Properties of HMA Mixtures in Nevada
… are met, test results are rarely translated into pavement performance characteristics. This research, by contrast, evaluated two typical HMA mixtures from the northern part of Nevada and two HMA mixtures from the southern part of Nevada used by NDOT with the most widely accepted laboratory …
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Evaluation of binder grades on rutting performance
Asphalt mixes that have a good history of resisting rutting in posted speed applications may not perform well in intersections, climbing lanes, truck weigh stations, and other slow speed areas. The West Virginia Division of Highways, WVDOH, has implemented the Performance Grade binder …
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Evaluation of indirect tensile strength to identify asphalt concrete rutting potential
… (SHRP) does not include any testing to evaluate asphalt mixture for resistance to permanent deformation. This prompted the National Cooperative Highway Research Program (NCHRP) to sponsor projects for the development of a simple performance test for rutting potential of asphalt mixtures. Anderson …
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Performance Characteristics of Polyethylene Terephthalate (PET) Modified Asphalt
… Therefore, the use of ground PET particles in asphalt may provide an environmentally friendly solution for the disposal of large quantities of PET waste. This study evaluated the performance of PET as an asphalt modifier with both asphalt binder and asphalt mixture testing. The binder testing …
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Digital Simulative Test of Asphalt Mixtures Using Finite Element Method and X-Ray Tomography Images
Simulative tests, such as asphalt pavement analyzer (APA), Hamberg rut tester etc. have been widely used to evaluate the performance of asphalt mixtures. However, simulative tests to evaluate the performance of the mixtures cannot give fundamental properties of Asphalt Concrete (AC) due to the …
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Effects of Coarse Aggregate Morphological Characteristics on Mechanical Performance of Stone Matrix Asphalt
… on the mechanical performances of stone matrix asphalt (SMA) mixtures constituted; (3) investigate the relationship between the uncompacted void content of coarse aggregates and morphological characteristics. To achieve the first research objective, a Fourier Transform Interferometry (FTI) …
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Balanced asphalt mix design and pavement distress predictive models based on machine learning
Traditional asphalt mix design procedures are empirical and need random and lengthy trials in a laboratory, which can cost much labor, material resources, and finance. The initiative (Material Genome initiative) was launched by President Obama to revitalize American manufacturing. To achieve the …
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Optimizing the Use of Reclaimed Asphalt Pavement (RAP) in Hot Mix Asphalt Surface Mixes
The most common use of reclaimed asphalt pavement (RAP) is in the lower layers of a pavement structure, where it has been proven as a valid substitute for virgin materials. Instead, the use of RAP in surface mixes is more limited, with a major concern being that the high RAP mixes may not perform …