Impact of Joint Spacing on Bonded Concrete Overlay of Existing Asphalt Pavement in the AASHTOWare Pavement ME Design Software

2019 ◽  
Vol 145 (3) ◽  
pp. 04019018
Author(s):  
Biplab B. Bhattacharya ◽  
Alex Gotlif ◽  
Michael I. Darter ◽  
Lev Khazanovich
Keyword(s):  
Asphalt Pavement ◽  
Joint Spacing ◽  
Design Software ◽  
Bonded Concrete Overlay ◽  
Pavement Me Design

Mechanical Response Analysis of the Composite Asphalt Pavement

2014 ◽  
Vol 1023 ◽  
pp. 28-31
Author(s):  
Li Min Li
Keyword(s):  
Service Life ◽  
Mechanical Response ◽  
Asphalt Pavement ◽  
Road Construction ◽  
Pavement Design ◽  
Rigid Base ◽  
Response Analysis ◽  
Early Failure ◽  
Short Service Life ◽  
Design Software

With the constant increasing of traffic flow and axle load, the early failure of semi-rigid base asphalt pavement is increasingly serious in China. The bad durability and short service life of pavement have become main obstacles in road construction development. Based on the experience of successful application, the early failure of semi-rigid base asphalt pavement is solved, and the service life of pavement is increased by using of the composite asphalt pavement. To solve the design problem of the composite asphalt pavement , its mechanical properties influence results of are obtained by the factors, such as shear strain, shear stress, compression strain on top of subgrade, etc, by a lot of calculation using Shell pavement design software. These provide theoretical basis for durable asphalt pavement design based on rut-resistance property.

Damage Assessment for ME Rehabilitation Design of Modified Asphalt Pavements: Challenges and Findings

2018 ◽  
Vol 2672 (40) ◽  
pp. 228-241 ◽  
Author(s):  
Jhony Habbouche ◽  
Elie Y. Hajj ◽  
Peter E. Sebaaly ◽  
Nathan E. Morian
Keyword(s):  
Dynamic Modulus ◽  
Hybrid Approach ◽  
Testing Temperature ◽  
Asphalt Pavements ◽  
Loading Frequency ◽  
Modified Asphalt ◽  
Core Samples ◽  
Design Software ◽  
Polymer Modified Asphalt ◽  
Pavement Me Design

The overall objective of this study was to assess the use of Level 1 analysis for mechanistic-empirical (ME) rehabilitation designs of deteriorated polymer-modified asphalt concrete (AC) pavements in Nevada using the AASHTOWare® Pavement ME software. This research also explored the possible implementation of a hybrid approach for AC damage characterization to overcome the challenges associated with the use of the Witczak model for estimating the undamaged dynamic modulus master curve of the existing AC layer. Two rehabilitation field projects were used as part of this study. The experimental plan involved falling weight deflectometer (FWD) testing in the right wheelpath before rehabilitation, analysis of core samples, estimation of an equivalent undamaged dynamic modulus, and estimation of equivalent damaged dynamic modulus from FWD backcalculation. The proposed hybrid approach consisted of conducting laboratory dynamic modulus testing on the collected core samples and estimating an equivalent undamaged dynamic modulus at the same FWD testing temperature and loading frequency. The pre-overlay damage, characterized based on the approach in Pavement ME Design software (i.e., using a Witczak prediction model and backcalculated modulus), showed overly high values that did not match with the collected pre-overlay distress data on either of the rehabilitation projects. Based on the findings from this study, the hybrid approach was recommended for implementation by Nevada Department of Transportation (NDOT) when designing AC overlay over polymer-modified asphalt pavements in Nevada. Recommendations for user inputs were also provided for future consideration in Pavement ME Design software.

Recalibration of the JPCP Cracking and Faulting Models in the AASHTO Pavement ME Design Software

2016 ◽  
Author(s):  
Jagannath Mallela ◽  
Leslie Titus-Glover ◽  
Biplab B. Bhattacharya ◽  
Alex Gotlif ◽  
Michael I. Darter
Keyword(s):  
Design Software ◽  
Pavement Me Design
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