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Development of Laboratory Testing and Numerical Modeling for Asphalt Pavement Cracking Performance.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Development of Laboratory Testing and Numerical Modeling for Asphalt Pavement Cracking Performance./
Author:	Jiao, Liya.
Description:	1 online resource (562 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 84-12, Section: B.
Contained By:	Dissertations Abstracts International84-12B.
Subject:	Civil engineering. -
Online resource:	click for full text (PQDT)
ISBN:	9798379707965

Development of Laboratory Testing and Numerical Modeling for Asphalt Pavement Cracking Performance.
Jiao, Liya.

Development of Laboratory Testing and Numerical Modeling for Asphalt Pavement Cracking Performance. - 1 online resource (562 pages)

Source: Dissertations Abstracts International, Volume: 84-12, Section: B.

Thesis (Ph.D.)--University of California, Davis, 2023.

Includes bibliographical references

Fatigue cracking is the most common distress in asphalt pavements. Currently, no performance-related laboratory tests exist for fatigue cracking to use in routine asphalt mix design to approve job mix formula (JMF) or quality control and quality assurance (QC/QA) in California. The existing four-point bending (4PB) test was developed to evaluate the fatigue performance of asphalt materials, but it is not necessarily appropriate for use in routine JMF, and it takes too long to complete for QC/QA. The first objective of this doctoral dissertation is to evaluate potential surrogate fatigue performance-related testing methods and identify a test that is simple and easy to perform and also provides a guidance for asphalt mix design on routine projects and for QC/QA on all projects.Potential performance-related tests evaluated in this study included monotonic loading fracture tests: semicircular bend (SCB) test, indirect tensile asphalt cracking test (IDEAL-CT), and repeated loading fatigue testing on fine aggregate matrix (FAM) mixes with linear amplitude sweep (LAS) testing configuration. These tests were conducted on a variety of asphalt materials, and they were assessed based on simplicity, repeatability (variability), and their relationship to flexural stiffness and fatigue life from 4PB tests.Fracture parameters obtained from SCB tests and IDEAL-CT and fatigue parameters from FAM mix fatigue tests were assessed as potential fatigue cracking indicators. Linear regression analysis was performed to correlate these indicators with the initial flexural stiffness and fatigue life from 4PB tests. The regression analysis results demonstrated that the SCB tests and IDEAL-CT provided the similar fracture information. In addition, fracture parameters from SCB tests and IDEAL-CT were found to be well correlated with the initial flexural stiffness from 4PB tests. Meanwhile, the initial flexural stiffness from 4PB tests showed a moderate nonlinear correlation with the fatigue life from 4PB tests.Among all fracture parameters, material strength obtained from IDEAL-CT was found to have low variability, strong correlation with flexural stiffness and a moderate correlation with fatigue life from 4PB tests, therefore, strength was proposed as a surrogate indicator for flexural stiffness and an indication of fatigue performance. The relationship identified in this study between flexural stiffness and flexural fatigue life, and the one between flexural stiffness and material strength from IDEAL-CT were used to develop a preliminary specification for fatigue performance. The strength from IDEAL-CT should meet both upper and lower specification limits to ensure required fatigue performance met for asphalt mixtures. However, since there was no strong relationship found directly between strength from IDEAL-CT and fatigue life from 4PB tests, fracture tests did not provide sufficient information to predict fatigue life performance.The repeated loading FAM mix fatigue test showed promising comparison results with both initial flexural stiffness and fatigue life from 4PB tests. The comparison between master curves of FAM shear stiffness and the ones of full graded hot mix asphalt (HMA) flexural stiffness indicated that FAM mixes were more sensitive to temperature and loading frequency than HMA as expected because of higher binder contents in FAM mixes. Linear correlations with R2 values of 0.63 and 0.59 were found between FAM shear stiffness and HMA flexural stiffness at intermediate frequencies (100 Hz and 10 Hz) at a reference temperature of 20 °C. In addition to the comparison between flexural stiffness of HMA and shear stiffness of FAM mixes, the dynamic compressive stiffness of HMA obtained from the asphalt mixture performance tester (AMPT) was also included to explore the effect of different loading configurations on the relationship between HMA stiffness and FAM mix stiffness. The shear stiffness of FAM and dynamic compressive stiffness of HMA were found to be moderately correlated at frequencies of 1 Hz, 10 Hz, 100 Hz and 1000 Hz. Furthermore, these three different types of stiffness: flexural stiffness of HMA, dynamic compressive modulus of HMA and shear stiffness of FAM mixes also indicated that the addition of rejuvenator to asphalt materials containing up to 50% RAP effectively reduced the stiffnesses almost to the same level of the virgin control mix. Given these findings, an attempt was made to upscale the shear stiffness of FAM mixes to the flexural stiffness and dynamic moduli of HMA with two methods. The comparison between predicted and measured moduli showed that the shear stiffness of FAM mixes provided reasonable estimates of both flexural stiffness and dynamic modulus of HMA at intermediate frequencies (1 to 10 Hz) with the error percentage less than 10%. On the other hand, overprediction was noted from both methods at higher frequencies.The comparison of fatigue performance between HMA and FAM mix was further investigated based on damage curves. The viscoelastic continuum damage (VECD) model, which depicts the reduction of material. (Abstract shortened by ProQuest).

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798379707965Subjects--Topical Terms:

561339
Civil engineering.
Subjects--Index Terms:

Asphalt pavementsIndex Terms--Genre/Form:

554714
Electronic books.

Development of Laboratory Testing and Numerical Modeling for Asphalt Pavement Cracking Performance.
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504 $a Includes bibliographical references
520 $a Fatigue cracking is the most common distress in asphalt pavements. Currently, no performance-related laboratory tests exist for fatigue cracking to use in routine asphalt mix design to approve job mix formula (JMF) or quality control and quality assurance (QC/QA) in California. The existing four-point bending (4PB) test was developed to evaluate the fatigue performance of asphalt materials, but it is not necessarily appropriate for use in routine JMF, and it takes too long to complete for QC/QA. The first objective of this doctoral dissertation is to evaluate potential surrogate fatigue performance-related testing methods and identify a test that is simple and easy to perform and also provides a guidance for asphalt mix design on routine projects and for QC/QA on all projects.Potential performance-related tests evaluated in this study included monotonic loading fracture tests: semicircular bend (SCB) test, indirect tensile asphalt cracking test (IDEAL-CT), and repeated loading fatigue testing on fine aggregate matrix (FAM) mixes with linear amplitude sweep (LAS) testing configuration. These tests were conducted on a variety of asphalt materials, and they were assessed based on simplicity, repeatability (variability), and their relationship to flexural stiffness and fatigue life from 4PB tests.Fracture parameters obtained from SCB tests and IDEAL-CT and fatigue parameters from FAM mix fatigue tests were assessed as potential fatigue cracking indicators. Linear regression analysis was performed to correlate these indicators with the initial flexural stiffness and fatigue life from 4PB tests. The regression analysis results demonstrated that the SCB tests and IDEAL-CT provided the similar fracture information. In addition, fracture parameters from SCB tests and IDEAL-CT were found to be well correlated with the initial flexural stiffness from 4PB tests. Meanwhile, the initial flexural stiffness from 4PB tests showed a moderate nonlinear correlation with the fatigue life from 4PB tests.Among all fracture parameters, material strength obtained from IDEAL-CT was found to have low variability, strong correlation with flexural stiffness and a moderate correlation with fatigue life from 4PB tests, therefore, strength was proposed as a surrogate indicator for flexural stiffness and an indication of fatigue performance. The relationship identified in this study between flexural stiffness and flexural fatigue life, and the one between flexural stiffness and material strength from IDEAL-CT were used to develop a preliminary specification for fatigue performance. The strength from IDEAL-CT should meet both upper and lower specification limits to ensure required fatigue performance met for asphalt mixtures. However, since there was no strong relationship found directly between strength from IDEAL-CT and fatigue life from 4PB tests, fracture tests did not provide sufficient information to predict fatigue life performance.The repeated loading FAM mix fatigue test showed promising comparison results with both initial flexural stiffness and fatigue life from 4PB tests. The comparison between master curves of FAM shear stiffness and the ones of full graded hot mix asphalt (HMA) flexural stiffness indicated that FAM mixes were more sensitive to temperature and loading frequency than HMA as expected because of higher binder contents in FAM mixes. Linear correlations with R2 values of 0.63 and 0.59 were found between FAM shear stiffness and HMA flexural stiffness at intermediate frequencies (100 Hz and 10 Hz) at a reference temperature of 20 °C. In addition to the comparison between flexural stiffness of HMA and shear stiffness of FAM mixes, the dynamic compressive stiffness of HMA obtained from the asphalt mixture performance tester (AMPT) was also included to explore the effect of different loading configurations on the relationship between HMA stiffness and FAM mix stiffness. The shear stiffness of FAM and dynamic compressive stiffness of HMA were found to be moderately correlated at frequencies of 1 Hz, 10 Hz, 100 Hz and 1000 Hz. Furthermore, these three different types of stiffness: flexural stiffness of HMA, dynamic compressive modulus of HMA and shear stiffness of FAM mixes also indicated that the addition of rejuvenator to asphalt materials containing up to 50% RAP effectively reduced the stiffnesses almost to the same level of the virgin control mix. Given these findings, an attempt was made to upscale the shear stiffness of FAM mixes to the flexural stiffness and dynamic moduli of HMA with two methods. The comparison between predicted and measured moduli showed that the shear stiffness of FAM mixes provided reasonable estimates of both flexural stiffness and dynamic modulus of HMA at intermediate frequencies (1 to 10 Hz) with the error percentage less than 10%. On the other hand, overprediction was noted from both methods at higher frequencies.The comparison of fatigue performance between HMA and FAM mix was further investigated based on damage curves. The viscoelastic continuum damage (VECD) model, which depicts the reduction of material. (Abstract shortened by ProQuest).
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2024
538 $a Mode of access: World Wide Web
650 4 $a Civil engineering. $3 561339
650 4 $a Materials science. $3 557839
650 4 $a Computer science. $3 573171
653 $a Asphalt pavements
653 $a Finite element modeling
653 $a Fatigue cracking
653 $a Asphalt material
653 $a FEM simulations
655 7 $a Electronic books. $2 local $3 554714
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690 $a 0984
690 $a 0794
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a University of California, Davis. $b Civil and Environmental Engineering. $3 1179246
773 0 $t Dissertations Abstracts International $g 84-12B.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30250471 $z click for full text (PQDT)