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Showing 1 to 10 of 10 for “"Alligator Cracking"”.
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Sensitivity analysis and calibration of the alligator cracking model in the mechanistic-empirical pavement design guide using regional data
… the data from all across the United States. The alligator cracking model uses traffic, material and structural data along with local and global calibration factors to calculate the number of axles to failure and the damage index. Both of which are further used to calculate the fatigue cracking in …
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Local calibration of the MEPDG prediction models for pavement rehabilitation and evaluation of top-down cracking for Oregon Roadways
… HMA overlays are also susceptible to fatigue cracking (alligator cracking and longitudinal cracking), rutting, and thermal cracking. Additional work was therefore needed to calibrate the design process for rehabilitation of existing pavement structures. 38 pavement sections throughout Oregon …
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Sensitivity of Distress Rate to Observed Distress Levels
… that were altered the most were for transverse cracking and alligator cracking. This research evaluates how sensitive the DR is to the revised data collection procedures. The comparison used a single milepost test section and one evaluator as ground truth data and then varied input values for a …
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Verification of asphalt concrete performance prediction using level 2 and level 3 inputs of mechanistic-empirical pavement design guide for flexible pavements of the state of New Jersey
… of various distresses, such as rutting, alligator cracking, longitudinal cracking, thermal cracking and International Roughness Index (IRI) were verified for the state of New Jersey. The material properties of older (> 5 years) existing pavement layers were not readily available, which …
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THERMAL FATIGUE DAMAGE OF ASPHALT PAVEMENT
… level of damage accumulation, bottom-up fatigue cracking initiates and forms alligator cracking at the surface. Like traffic loading, repeated day-night temperature cycle causes damages in AC. Damage due to a single day-night temperature fluctuation may be small. However the accumulated damage …
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Characterization of traffic load and local calibration of the MEPDG for New Mexico
… of axle load spectra is very high on fatigue cracking, moderate on permanent deformation, and non-existent on thermal cracking and roughness. In this study, local data related to traffic, climate, pavement structure, materials, and distress are collected from different NMDOT sources and stored …
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Performance of the Crack, Seat, and Overlay Rehabilitation Technique for Concrete Pavements in California
… based on dependent (distress) variables: alligator cracking, transverse cracking, longitudinal cracking, and International Roughness Index (IRI). And independent (explanatory) variables: age, traffic in the form of equivalent single axle load (ESAL), thickness of hot mix asphalt (HMA), …
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Risk Analysis and Reliability Improvement of Mechanistic-Empirical Pavement Design
… a rapid solution of distress prediction for alligator cracking, rutting and smoothness. Fourth, a new reliability model based on Monte Carlo Simulation was proposed. Using surrogate models, 10,000 Monte Carlo simulations were calculated in minutes to develop the output ensemble, on which the …
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Network-level maintenance decisions for flexible pavement using a soft computing-based framework
… The severity and extent of seven distress types (alligator cracking, block cracking, longitudinal and transverse cracking, patching, potholes, bleeding and ravelling) were used as fuzzy inputs. The result showed a good correlation for fuzzy model. A sensitivity analysis showed a pavement crack has …
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Sensitivity of MEPDG Using Advanced Statistical Analyses
… Outputs such as terminal IRI, longitudinal cracking, and alligator cracking are highly sensitive to bottom AC layer thickness. MEPDG outputs are also sensitive to HMA mix properties such as thickness, percent air void, binder content and PG grade. Longitudinal and transverse cracking are …