Evaluation of shortwave and longwave radiation models for mechanistic-empirical pavement analysis

Alam-Khan, Shafkat; Çetin, Bora; Forman, B. A.; Kutay, M. Emin; Durham, Stephan A.; Schwartz, Charles W.

doi:10.1080/10298436.2021.1895155

Cited by 7 publications

(2 citation statements)

References 26 publications

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“…The MEAPA web application predicts pavement temperature profile with depth based on an improved climatic-materials-structural (CMS) model, which was originally developed at the University of Illinois ( 21 ). The main improvement is on the computation of downwelling shortwave radiation (D-SWR) from the sun, downwelling longwave radiation (D-LWR) from the atmosphere, and upwelling longwave radiation (U-LWR) ( 22 ). Another improvement is on the calculation of sunrise and sunset times, which are important in calculation of net radiation ﬂux at the pavement surface ( 21 ).…”

Section: Mechanistic-empirical Asphalt Pavement Analysis (Meapa)mentioning

confidence: 99%

Implementation of NCHRP 9-44A Fatigue Endurance Limit Prediction Model in Mechanistic-Empirical Asphalt Pavement Analysis Web Application

Ghazavi

Abdollahi

Kutay

2022

Transportation Research Record: Journal of the Transportation R

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One of the essential components of various design methods for perpetual (or long-life) flexible pavements is elimination (or minimization) of bottom-up fatigue cracking. For this purpose, the concept of the fatigue endurance limit (FEL) is used. The FEL is defined as a strain threshold below which fatigue damage does not accumulate for any number of load repetitions. Different ranges of FEL values have been reported in the literature. Recent studies have showed that FEL is not a single value and depends on several factors. The NCHRP 9-44A project resulted in an FEL prediction model based on the micro-crack healing concept and stiffness, both of which can fluctuate throughout the service life of a pavement. In this study, NCHRP 9-44A FEL prediction model was implemented in the Mechanistic-Empirical Asphalt Pavement Analysis (MEAPA) web application to investigate the effect of fluctuating FEL on bottom-up fatigue cracking prediction in three typical road sections (low, medium, and high traffic) in Michigan. The critical bottom-up fatigue strains, predicted FEL, and predicted fatigue cracking for each road section have been compared. The results revealed that implementation of FEL is critical for accuracy in the prediction of fatigue cracking in relatively thick pavements that are subjected to high traffic loading. The effect of FEL, however, was minimal in thin pavements with low traffic levels. Therefore, given that the mechanistic-empirical pavement design methods are typically used while designing highly trafficked pavements (e.g., highways, arterials, etc.), proper implementation of the FEL concept in pavement design is very important.

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Section: Mechanistic-empirical Asphalt Pavement Analysis (Meapa)mentioning

confidence: 99%

Implementation of NCHRP 9-44A Fatigue Endurance Limit Prediction Model in Mechanistic-Empirical Asphalt Pavement Analysis Web Application

Ghazavi

Abdollahi

Kutay

2022

Transportation Research Record: Journal of the Transportation R

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“…Existing radiation models are usually empirical and do not consider cloud cover properly [34]. In case metrological data regarding radiation is not available empirical model might be used however adjust for cloud cover is of extra importance in such cases [39].…”

Section: Incoming Longwave Radiationmentioning

confidence: 99%

Development and Validation of a Pavement Temperature Profile Prediction Model in a Mechanistic-Empirical Design Framework

Erlingsson

Saliko²,

Ahmed³

2022

Preprint

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Development and validation of a pavement temperature profile prediction model in a mechanistic-empirical design framework

Saliko

Ahmed

Erlingsson

2023

Transportation Geotechnics

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Evaluation of shortwave and longwave radiation models for mechanistic-empirical pavement analysis

Cited by 7 publications

References 26 publications

Implementation of NCHRP 9-44A Fatigue Endurance Limit Prediction Model in Mechanistic-Empirical Asphalt Pavement Analysis Web Application

Implementation of NCHRP 9-44A Fatigue Endurance Limit Prediction Model in Mechanistic-Empirical Asphalt Pavement Analysis Web Application

Development and Validation of a Pavement Temperature Profile Prediction Model in a Mechanistic-Empirical Design Framework

Development and validation of a pavement temperature profile prediction model in a mechanistic-empirical design framework

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