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Showing 1 to 13 of 13 for “"Flow number"”.
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Effects of Coarse Aggregate Morphological Characteristics on Mechanical Performance of Stone Matrix Asphalt
… included wheel-track loading, dynamic modulus, flow number, and beam fatigue. The wheel tracking test included asphalt pavement analyzer (APA) and Model mobile load simulator (MMLS). In the APA test, samples included eight types of SMA mixtures that consisted of aggregates of 22 fractions. In …
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Development and validation of a novel testing procedure for the evaluation of rutting susceptibility of bituminous binders.
… of testing protocol was to reach steady state flow during creep phase at all temperatures. In case of MSCR tests on AR and PMB tests were started at 64 °C and for NA and NB same temperature range selected for SCR and MSC was also applied. In case of SCR-MSC creep compliance rate from creep …
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Comparative Evaluation of Field and Laboratory-Produced Foamed Asphalt Mixture from Reno, Nevada
… the repeated load triaxial (RLT) to measure the flow number (FN). The low-temperature cracking resistance of the mixtures was evaluated using the thermal stress restrained specimen test (TSRST). From this study it was determined that the HMA had better resistance to moisture damage and permanent …
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Laboratory Evaluation of Warm Mix Asphalt Mixtures in South Dakota, USA
… (WMA) is becoming more widespread with a growing number of contractors utilizing various WMA technologies. WMA processes were developed to reduce the mixing and compaction temperatures of hot mix asphalt without sacrificing the quality of the resulting pavement. Early research suggests WMA may be …
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Design of Cold-In-Place Recycling using Superpave gyratory compactor
… CIR mixtures were also evaluated in term of the flow number.
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Development of a Mechanistic-Based Approach to Evaluate Critical Conditions of Hot Mix Asphalt Mixtures
… using RLT results and actual field performance. Flow number criteria as a function of traffic level were also developed for the HMA mixtures. The proposed approach was validated using three additional mixtures from Nevada, two mixtures from the WesTrack accelerated test facility, three mixtures …
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Performance Characterization of Recycled Asphalt Pavements with Warm Mix Asphalt Technologies
… to rutting was evaluated by determining flow number using the Asphalt Mixture Performance Tester (AMPT) machine. Finally, thermal resistance of the mixtures were evaluated by conducting Uniaxial Thermal Stress and Strain Test (UTSST). The study determined that the moisture susceptibility …
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A Laboratory Study on the Effect of High Rap and High Asphalt Binder Content on the Performance of Asphalt Concrete
… (flexural beam), and rutting resistance (flow number). Results showed that a 0.5% increase in binder content improved both the fatigue and rutting resistance of the 0% and 20% RAP mixes with only slight decreases in dynamic modulus. However, the addition of various amounts of binder to the …
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Performance Evaluation of Asphalt Mixtures with Tire Rubber Modified Binder
… R84 standard procedure for asphalt mixtures. Flow Number tests were conducted using the Asphalt Mixture Performance Tester (AMPT) device and the results were used to fit the Francken Model as specified in AASHTO T387. Fatigue cracking resistance tests were conducted using the Hydraulic Beam …
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Improving the Laboratory Design of Asphalt Mixtures to Enhance Asphalt Pavement Durability
… determined by measuring the dynamic modulus and flow number. The results suggest that the mixture designs produced using 70, 50, and 30 gyrations had permanent deformation characteristics equal to or better than the original 100-gyration mixtures.</p> <p>After promising laboratory results, two …
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Incidentalità in ambito urbano: studio del comportamento di guida in relazione alle caratteristiche geometriche dell’infrastruttura stradale
… in two scenarios: normal traffic and under free flow conditions when vehicles are isolated. Particular attention was given to define the isolated vehicle. In the literature the definition of isolated vehicle does not exist for urban roads. For this reason, the time intervals were defined. The …
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Understanding emplacement of rapidly-emplaced volume-limited lava flows from Mount Etna’s 2011-2012 eruption : a multidisciplinary study
… focuses on long-duration cooling-limited lava flows, the short duration and rapid emplacement of many volume-limited flows impedes their analysis. This thesis aims to improve understanding of the emplacement of shortduration volume-limited lava flows by: (1) employing long-range ground-based …
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Mixing in high throughput experimentation reactors
… sizes (~ 15-250 ml) contribute to a low Reynolds Number, Re, which results in poor mixing efficiencies. Together with unconventional geometries, i.e. lack of baffles and simple impeller designs, their fundamentals are not fully understood. The present study applies Particle Image Velocimetry (2-D …