Perpetual pavement design and construction using anti-fatigue base layer on expressway S8 in Poland

2016 ◽  
Author(s):  
Igor Ruttmar ◽  
Agata Grajewska ◽  
Karolina Pełczyńska
Keyword(s):  
Pavement Design ◽  
Base Layer ◽  
Perpetual Pavement ◽  
Design And Construction

Incorporation of Endurance Limit in the Mechanistic-Empirical Flexible Perpetual Pavement Design

2018 ◽  
Vol 2672 (40) ◽  
pp. 108-121 ◽  
Author(s):  
Sheng Hu ◽  
Sang-Ick Lee ◽  
Lubinda F. Walubita ◽  
Fujie Zhou ◽  
Tom Scullion
Keyword(s):  
Endurance Limit ◽  
Design Method ◽  
Field Performance ◽  
Fatigue Cracking ◽  
Climatic Conditions ◽  
Influential Factors ◽  
Pavement Design ◽  
Design System ◽  
Viscoelastic Continuum Damage ◽  
Perpetual Pavement

In recent years, there has been a push toward designing long-lasting thick hot mix asphalt (HMA) pavements, commonly referred to as a perpetual pavements (PP). For these pavements, it is expected that bottom-up fatigue cracking does not occur if the strain level is below a certain limit that is called the HMA fatigue endurance limit (EL). This paper proposed a mechanistic-empirical PP design method based on this EL concept. The ELs of 12 HMA mixtures were determined using simplified viscoelastic continuum damage testing and the influential factors were comparatively investigated. It was found that HMA mixtures seem to have different EL values based on mix type and test temperatures. There is not just a single EL value that can be used for all mixtures. Thus, default EL criteria for different mixtures under different climatic conditions were developed and incorporated into the Texas Mechanistic-Empirical Flexible Pavement Design System (TxME). As a demonstration and case study, one Texas PP test section with weigh-in-motion traffic data was simulated by TxME. The corresponding TxME inputs/outputs in terms of the PP structure, material properties, traffic loading, environmental conditions, and ELs were demonstrated. The corresponding TxME modeling results were consistent with the actual observed field performance of the in-service PP section.

Response of Perpetual Pavement under Different Axle Heavy Truck

2013 ◽  
Vol 838-841 ◽  
pp. 1173-1181
Author(s):  
Shi Jie Ma ◽  
Xiao Ming Huang
Keyword(s):  
Base Layer ◽  
Local Climate ◽  
Vehicle Loading ◽  
Test Road ◽  
Heavy Truck ◽  
Pavement Structures ◽  
Perpetual Pavement ◽  
Equivalent Modulus ◽  
Heavy Loads ◽  
Pavement Foundation

To investigate suitability of the perpetual pavement under ultra-heavy loads, a test road was constructed on expressway in Shandong province of China. There were five pavement structures include semi-rigid asphalt pavement, each was instrumented with gages for measuring the strains of asphalt base layer, the vertical stress of subgrade, temperature of asphalt layers. The analysis of the strain data indicated that the strain values are affected by the temperature, the vehicle load, axle type, and the pavement structure combination. To research the response of different structure, tested different axle and load at different temperature, then different pavement response models were developed that accounts for layer thickness, axles load, pavement temperature and equivalent modulus of pavement foundation. The models provides good references under heavy vehicle loading and China local climate, it will be useful for perpetual pavement design.

scholarly journals Performance based pavement design and construction

2019 ◽  
Vol 512 ◽  
pp. 012053
Author(s):  
Mohd Azwan Salleh ◽  
Nagamuttu Narendranathan ◽  
Eng Choy Lee ◽  
Qusanssori Noor Rusli
Keyword(s):  
Pavement Design ◽  
Design And Construction

Cold Central Plant Recycled Asphalt Pavements in High Traffic Applications

2018 ◽  
Vol 2672 (40) ◽  
pp. 291-303 ◽  
Author(s):  
David H. Timm ◽  
Brian K. Diefenderfer ◽  
Benjamin F. Bowers
Keyword(s):  
High Volume ◽  
Base Layer ◽  
Asphalt Pavements ◽  
Ride Quality ◽  
Recycled Asphalt ◽  
Test Track ◽  
Central Plant ◽  
Perpetual Pavement ◽  
Virginia Department ◽  
Cement Stabilized Base

Cold central plant recycling (CCPR) is gaining wider use in the U.S. for rehabilitating existing asphalt pavements or for new construction. Although it is used widely in lower traffic volume situations, CCPR use in high volume pavements remains an open question when considering its structural capacity and expected performance. A project completed in 2011 on I-81 in Virginia indicated CCPR may be suitable for high-volume traffic applications and was further evaluated with the construction of three CCPR test sections at the National Center for Asphalt Technology Test Track in 2012. These sections are now approaching 20 million equivalent single axle load applications and this paper documents their structural and surface performance thus far. The structural characterization indicates healthy pavements with no significant increases in measured pavement response or decreases in backcalculated moduli over time. Performance has been excellent with no cracking observed on any section, rut depths less than 0.3 inches and ride quality that has remained almost unchanged. Perpetual pavement analyses were also conducted and found that the section with a cement-stabilized base layer supporting the CCPR layer met the criteria and is likely perpetual. The other two sections, without the cement-stabilized base, did not meet the criteria and may develop bottom-up cracking. Data from the I-81 and Test Track sections enabled the Virginia Department of Transport (VDOT) to proceed with a design-build project on I-64 that will feature CCPR with a cement-stabilized base and full-depth reclamation (FDR). It is estimated that nearly 170,000 tons of reclaimed asphalt pavement will be used with over $10 million in savings.

Evaluation of the Response Analysis Approach Used in the Mechanistic-Empirical Pavement Design Guide

2020 ◽  
pp. 036119812097401
Author(s):  
Guozhi Fu ◽  
Yanqing Zhao ◽  
Wanqiu Liu ◽  
Changjun Zhou
Keyword(s):  
Phase Angle ◽  
Dynamic Modulus ◽  
Master Curve ◽  
Compressive Strain ◽  
Pavement Design ◽  
Base Layer ◽  
Response Analysis ◽  
Rate Dependency ◽  
Rate Dependent ◽  
Design Guide

Asphalt concrete (AC) is a typical viscoelastic material exhibiting rate-dependent behavior. The rate-dependency of AC should be properly taken into consideration in pavement response analysis to accurately evaluate pavement performance and life. In the Mechanistic-Empirical Pavement Design Guide (MEPDG), the dynamic modulus master curve is used to account for the rate-dependency of the dynamic modulus of AC. However, the rate-dependent phase angle is ignored and a constant phase angle of 0 is assumed. The partial characterization of rate-dependent properties of AC in the MEPDG may lead to inaccurate results. This study compares the pavement responses computed using the MEPDG approach and the layered viscoelastic theory (LVET) which utilizes the complex modulus master curve to fully characterize the rate-dependent properties of AC. Typical three-layer pavement structures were analyzed at three temperatures (−10°C, 20°C and 50°C) and four speeds (10, 40, 80 and 120 km/h). The results show that the horizontal tensile stresses at the bottom of cement-treated base layer obtained from the two approaches are almost the same, and for other responses analyzed, the results obtained from the MEPDG approach are larger than those from the LVET approach, especially for the responses in the AC layer. The normalized difference of the vertical compressive strain at the mid-depth of the AC layer between the two approaches can be up to 100% and that for the horizontal tensile strain at the bottom of the AC layer can be more than 50%.

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