Effect of Interstitial Volume Characteristics on Asphalt Mixture Durability and Cracking Performance

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Material Information

Title:
Effect of Interstitial Volume Characteristics on Asphalt Mixture Durability and Cracking Performance
Physical Description:
1 online resource (112 p.)
Language:
english
Creator:
Isola, Marco
Publisher:
University of Florida
Place of Publication:
Gainesville, Fla.
Publication Date:

Thesis/Dissertation Information

Degree:
Doctorate ( Ph.D.)
Degree Grantor:
University of Florida
Degree Disciplines:
Civil Engineering, Civil and Coastal Engineering
Committee Chair:
ROQUE,REYNALDO
Committee Co-Chair:
HILTUNEN,DENNIS R
Committee Members:
TIA,MANG
TEBALDI,GABRIELE
SANKAR,BHAVANI V

Subjects

Subjects / Keywords:
aggregate -- asphalt -- cracking -- modeling
Civil and Coastal Engineering -- Dissertations, Academic -- UF
Genre:
Civil Engineering thesis, Ph.D.
bibliography   ( marcgt )
theses   ( marcgt )
government publication (state, provincial, terriorial, dependent)   ( marcgt )
born-digital   ( sobekcm )
Electronic Thesis or Dissertation

Notes

Abstract:
It is well documented that performance of asphalt mixture is related to aggregate structure. The Dominant Aggregate Size Range Interstitial Component (DASR IC) model provides a framework of gradation based parameters and associated criteria to link gradation characteristics and volumetric properties to aggregate structure, mixture properties, and field performance. Primary interlocking of coarser aggregate is characterized by DASR parameters, which have been used to establish performance based criteria based on extensive field rutting data. Studies have also shown that mixtures with acceptable DASR criteria may not result in acceptable cracking performance, indicating that IC characteristics strongly influence fracture resistance. Therefore, the objective of this study was to characterize the interstitial volume within the coarse aggregate structure and assess its effects on asphalt mixture cracking performance and durability. In order to obtain the data necessary to meet the objectives of this study, an experimental testing plan was developed, which includes a wide range of mixtures subjected to different varying conditioning levels. The DASR IC model was used to design the range of mixtures to be tested. Mixtures were designed by maintaining DASR porosity and DF values within the acceptable ranges, while broader ranges were used for EFT and FAR parameters. A total of sixteen mixtures was designed and tested as described in the testing plan. In order to achieve a better understanding of the relative effects of IC characteristics on stress and strain distribution within the IV, studies using finite element models were performed. The goal of this numerical analysis was to support the findings obtained from the laboratory study and to draw conclusions for a broader range of mixture gradations. A set of 2D linear elastic models using a schematic representation of the IV was developed. Based on results analyzed, it was found that the introduction of DASR IC criteria as performance-related design parameters to current mix design guidelines and specifications will lead to better and more consistent field rutting and cracking performance of Superpave mixtures.
General Note:
In the series University of Florida Digital Collections.
General Note:
Includes vita.
Bibliography:
Includes bibliographical references.
Source of Description:
Description based on online resource; title from PDF title page.
Source of Description:
This bibliographic record is available under the Creative Commons CC0 public domain dedication. The University of Florida Libraries, as creator of this bibliographic record, has waived all rights to it worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law.
Statement of Responsibility:
by Marco Isola.
Thesis:
Thesis (Ph.D.)--University of Florida, 2014.
Local:
Adviser: ROQUE,REYNALDO.
Local:
Co-adviser: HILTUNEN,DENNIS R.
Electronic Access:
RESTRICTED TO UF STUDENTS, STAFF, FACULTY, AND ON-CAMPUS USE UNTIL 2014-11-30

Record Information

Source Institution:
UFRGP
Rights Management:
Applicable rights reserved.
Classification:
lcc - LD1780 2014
System ID:
UFE0046551:00001