Evaluation of dynamic modulus of typical asphalt mixtures in Northeast US Region

Li, Jingcheng; Zofka, Adam; Yut, Iliya

doi:10.1080/14680629.2012.666641

Cited by 34 publications

(7 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is a function of temperature, loading time and several other factors related to the asphalt mix composition. Effects of all these factors are described in detail in publications [ 35 , 36 , 37 , 38 , 39 ]. Nevertheless, the effects of variation of the asphalt mix composition on its stiffness modulus do not impact the described phenomena and are not considered in these studies.…”

Section: Theoretical Explanation Of Observed Phenomenamentioning

confidence: 99%

The Effect of Flexible Pavement Mechanics on the Accuracy of Axle Load Sensors in Vehicle Weigh-in-Motion Systems

Burnos

Ryś

2017

Sensors

View full text Add to dashboard Cite

Weigh-in-Motion systems are tools to prevent road pavements from the adverse phenomena of vehicle overloading. However, the effectiveness of these systems can be significantly increased by improving weighing accuracy, which is now insufficient for direct enforcement of overloaded vehicles. Field tests show that the accuracy of Weigh-in-Motion axle load sensors installed in the flexible (asphalt) pavements depends on pavement temperature and vehicle speeds. Although this is a known phenomenon, it has not been explained yet. The aim of our study is to fill this gap in the knowledge. The explanation of this phenomena which is presented in the paper is based on pavement/sensors mechanics and the application of the multilayer elastic half-space theory. We show that differences in the distribution of vertical and horizontal stresses in the pavement structure are the cause of vehicle weight measurement errors. These studies are important in terms of Weigh-in-Motion systems for direct enforcement and will help to improve the weighing results accuracy.

show abstract

Section: Theoretical Explanation Of Observed Phenomenamentioning

confidence: 99%

The Effect of Flexible Pavement Mechanics on the Accuracy of Axle Load Sensors in Vehicle Weigh-in-Motion Systems

Burnos

Ryś

2017

Sensors

View full text Add to dashboard Cite

show abstract

“…While this example may overestimate the effect of geogrid reinforcement on pavement fatigue life, nonetheless it demonstrates the potential benefit of using the geogrid in asphalt pavements. Further, this example considers only one phenomenon (bottom-up cracking) while there are other factors either affecting this phenomenon or contributing to other phenomena such as resistance to low temperature (Zofka, Braham 2009), pavement dynamic response (Li et al 2012) or aging resistance (Li et al 2006). In the recent years, there is also a growing awareness that there is a close link between chemical and mechanical properties of asphaltic materials, which also needs to be taken into consideration (Paliukaitė et al 2015;Yut, Zofka 2014).…”

Section: Discussionmentioning

confidence: 99%

Geogrid Reinforcement of Asphalt Pavements

Zofka

Maliszewski

Zofka

et al. 2017

The Baltic Journal of Road and Bridge Engineering

Self Cite

View full text Add to dashboard Cite

Geogrid materials applied within asphalt layers defer or prevent the occurrence of reflective cracking. The contribution of this work significantly adds to extending pavement serviceability and improving benefit/cost analysis. Since 1970s many studies have demonstrated the benefits of geogrid reinforcement in asphalt pavements, but this knowledge did not translate to their extensive usage in the actual construction practice. Among potential reasons are higher initial costs, lack of in-depth understanding of working mechanism within adjacent asphalt layers and lack of commonly standard design procedures. This paper presents a recent study, which investigated the effect of geogrid reinforcement on asphalt mixture specimens. Two types of laboratory experiments were conducted, namely monotonic (strength and fracture) testing and cyclic (fatigue and modulus) testing. The results demonstrated a significant strengthening contribution of geogrid, which was observed regarding fracture energy results and terminal deflections in the fatigue testing. This paper also presents a short example connecting pavement deflections with the allowable axle loading (also known as fatigue life) to demonstrate the practical implications of geogrid reinforcement. The undertaken analysis shows the reduction of pavement deflections due to the geogrid application, which potentially leads to a significant extension of pavement fatigue life. Paper concludes with several recommendations for further work in the area of geogrid reinforcement.

show abstract

“…Researchers have taken various methods to handle the variation of test results used to calibrate functional relationships. For dynamic modulus data, a common practice is to consider measured results for each temperature and frequency combination and analyze the variation independently even though the data are typically used to create a mastercurve model (3)(4)(5). Bonaquist conducted the repeatability and reproducibility analysis for each combination of temperature and frequency following the ASTM standards (6).…”

mentioning

confidence: 99%

Repeatability and Reproducibility Analysis for Functional Test Results from Asphalt Mixture Performance Tester Cyclic Fatigue Test

Ding

Jeong

Lee

et al. 2023

Transportation Research Record: Journal of the Transportation R

View full text Add to dashboard Cite

The standards for asphalt mixture performance tester (AMPT) cyclic fatigue testing (AASHTO T 400-22 and AASHTO TP 133-21) enable pavement engineers to predict asphalt mixture performance over a wide range of loading and climate conditions. To enable widespread implementation of AMPT cyclic fatigue testing, precision statements that define the repeatability and reproducibility of the tests are needed. ASTM E691-20 and ASTM C670-15 provide guidance for conducting an interlaboratory study to determine the precision of a test method. However, the standards are written for test methods that yield a single numerical figure as the test result, whereas the cyclic fatigue test yields the damage characteristic curve—a functional relationship—as a primary test result. In this study, a vnorm index was established to quantify variation in the entire damage characteristic curve. Repeatability and reproducibility analysis was conducted using vnorm, six single-point measures of damage characteristic curve variation, and one single-point measure for the fatigue test failure criterion ( D R). The major findings are: (1) the outcomes of repeatability and reproducibility analysis using single-point measures of the damage characteristic curve vary with the chosen point of reference; (2) vnorm demonstrates clear increases in within- and between-laboratory variations with increasing mixture nominal maximum aggregate size (NMAS) values; (3) within-laboratory variation of D R results increases with increasing NMAS for a given specimen geometry while the reproducibility of D R does not depend on the NMAS. Correspondingly, precision limits for both vnorm and D R were recommended and evaluated using a broad set of test results.

show abstract

Evaluation of dynamic modulus of typical asphalt mixtures in Northeast US Region

Cited by 34 publications

References 14 publications

The Effect of Flexible Pavement Mechanics on the Accuracy of Axle Load Sensors in Vehicle Weigh-in-Motion Systems

The Effect of Flexible Pavement Mechanics on the Accuracy of Axle Load Sensors in Vehicle Weigh-in-Motion Systems

Geogrid Reinforcement of Asphalt Pavements

Repeatability and Reproducibility Analysis for Functional Test Results from Asphalt Mixture Performance Tester Cyclic Fatigue Test

Contact Info

Product

Resources

About