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Showing 1 to 12 of 12 for “"asphalt concrete mixtures"”.
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Fatigue-fracture relation on asphalt concrete mixtures
… the fatigue and fracture parameters for the asphalt mixtures investigated. The study was motivated by the desire to investigate the feasibility of predicting time-consuming fatigue test results with fracture test results, which can be obtained much more rapidly. Based on the results obtained …
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Fatigue Damage Analysis in Asphalt Concrete Mixtures Based Upon Dissipated Energy Concepts
The results of this study provide a foundation for fatigue analysis based on dissipated energy concepts. Using the dissipated energy concepts in fatigue analysis make it possible to account for damage in a straightforward manner. The energy fatigue relation is easy, simple and based on a theory it …
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Investigating Use of Aggregate Density to Develop Design Aggregate Structure for Asphalt Concrete Mixtures
… was to determine if the aggregate in the asphalt concrete mixture was reaching a dense configuration.;The Bailey Method was used to choose gradations and the selected research methodology supported the evaluation of the Bailey Method as a means for estimating changes in mix volumetric …
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Nonlinear ultrasonic testing using a non-collinear approach: application to heat treatment of steels and to asphalt concrete mixtures
… investigation was also performed on two asphalt specimens exposed to different aging conditions. Specimens made of 1045 Steel with various crystalline compositions were used as torsional wave guides in order to observe acoustic attenuation behavior. Bars of one eighth inch diameter and 15 …
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Development of Antioxidant Treatments for Asphalt Binders and Mixtures
… need for more effective antioxidants to control asphalt age-hardening, eight additives were evaluated based on their potential to reduce age-hardening in asphalts. The selected additives were used to modify a PG 64-22 asphalt binder in the laboratory. The modified binders were subjected to …
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Fracture Tests for Bituminous-Aggregate Mixtures: Laboratory and Field Investigations
… deterioration has been the cracking of the asphalt materials. This study investigates the ability to apply fracture mechanics principles to study asphalt concrete cracking through experimental techniques. Single-edge notched beam (SE(B)) and disk-shaped compact tension (DC(T)) test …
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Fracture Characteristics of Asphalt Concrete in Mode I, Mode II, and Mixed-Mode
Three mixtures from the full-scale test sections discussed above were used to develop and validate a new Mode II test for asphalt concrete. No previous literature was found that attempted to capture Mode II fracture energy in asphalt concrete, so a test was developed from an extensive review of …
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An acoustic emission-based test to evaluate low temperature behavior of asphalt materials
Low temperature cracking in asphalt pavements located in cold climates is a major cause of pavement deterioration. Accurate evaluation of low temperature cracking behavior of asphalt materials is necessary in order to design pavements that are resistant to thermally induced cracking. Detrimental …
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Experimental evaluation of monotonic and cyclic fracture behavior using disk-shaped compact tension test and released energy approach
… involves the evaluation of fracture behavior of asphalt concrete under monotonic and cyclic loading using the disk-shaped compact tension (DC(T)) test and a released-energy based approach. The standard DC(T) test was revised to facilitate both monotonic and cyclic loading tests, including some …
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Implementation of mechanistic-empirical approach for structural design of hydrated lime modified flexible pavement
… the objective of this study, three types of asphalt concrete mixtures that represent the pavement asphaltic courses (Wearing, Leveling and Base) of the asphalt concrete layer were produced and evaluated. As mineral filler materials, ordinary limestone dust and hydrated lime were used in this …
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The Effects of Reclaimed Asphalt Pavement (RAP) on the Laboratory Performances of Hot Mix Asphalts
The use of reclaimed asphalt pavement (RAP) in flexible pavement surface layer has been a major sensitive issue in the construction industry. Due to limited space available in landfills, the amount of high quality virgin aggregate declines, and the high price of oil, the use of RAP in new asphalt …
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Fracture characterization of thin bonded asphalt concrete overlay systems
Asphalt overlays provide an economical means for treating deteriorated pavements. Thin bonded overlay (TBO) systems have become popular options for pavement rehabilitation. In addition to functional improvements, these systems ensure a high degree of waterproofing benefits. Conventional asphalt …