Evaluating Moisture Susceptibility of Asphalt Mixes

Evaluating Moisture Susceptibility of Asphalt Mixes
Author: Elizabeth Rae Hunter
Publisher:
Total Pages: 164
Release: 2002
Genre: Frost
ISBN:

This research project utilized laboratory evaluations to study effects of freeze-thaw cycling on the tensile strength of eight Hot Mix Asphalt mixtures and to determine if the Georgia Loaded Wheel Tester could be utilized to measure moisture susceptibility of Hot Mix Asphalt mixtures. The evaluation involved eight Hot Mix Asphalt mixtures from combinations of two aggregate types and four asphalt-additive-aging possibilities. Laboratory testing was accomplished in the first phase with the production of 2.5 by 4 inch cores that were freeze-thaw cycled and tested for their indirect tensile strength following Wyoming modified AASHTO T283. The second phase was accomplished using 3 by 6 inch cores that were conditioned and tested for rutting using the Georgia Loaded Wheel Tester. Finally, a statistical analysis was performed to determine if performance of the various mixtures was significantly different in groups of asphalt types and to determine if the Georgia Loaded Wheel Tester was a viable measurement tool for moisture susceptibility.

7th RILEM International Conference on Cracking in Pavements

7th RILEM International Conference on Cracking in Pavements
Author: A. Scarpas
Publisher: Springer Science & Business Media
Total Pages: 1340
Release: 2012-08-30
Genre: Technology & Engineering
ISBN: 9400745664

In the recent past, new materials, laboratory and in-situ testing methods and construction techniques have been introduced. In addition, modern computational techniques such as the finite element method enable the utilization of sophisticated constitutive models for realistic model-based predictions of the response of pavements. The 7th RILEM International Conference on Cracking of Pavements provided an international forum for the exchange of ideas, information and knowledge amongst experts involved in computational analysis, material production, experimental characterization, design and construction of pavements. All submitted contributions were subjected to an exhaustive refereed peer review procedure by the Scientific Committee, the Editors and a large group of international experts in the topic. On the basis of their recommendations, 129 contributions which best suited the goals and the objectives of the Conference were chosen for presentation and inclusion in the Proceedings. The strong message that emanates from the accepted contributions is that, by accounting for the idiosyncrasies of the response of pavement engineering materials, modern sophisticated constitutive models in combination with new experimental material characterization and construction techniques provide a powerful arsenal for understanding and designing against the mechanisms and the processes causing cracking and pavement response deterioration. As such they enable the adoption of truly "mechanistic" design methodologies. The papers represent the following topics: Laboratory evaluation of asphalt concrete cracking potential; Pavement cracking detection; Field investigation of pavement cracking; Pavement cracking modeling response, crack analysis and damage prediction; Performance of concrete pavements and white toppings; Fatigue cracking and damage characterization of asphalt concrete; Evaluation of the effectiveness of asphalt concrete modification; Crack growth parameters and mechanisms; Evaluation, quantification and modeling of asphalt healing properties; Reinforcement and interlayer systems for crack mitigation; Thermal and low temperature cracking of pavements; and Cracking propensity of WMA and recycled asphalts.

HRIS Abstracts

HRIS Abstracts
Author: National Research Council (U.S.). Highway Research Information Service
Publisher:
Total Pages: 438
Release: 1986
Genre: Highway research
ISBN:

Tensile Strength

Tensile Strength
Author: N. Paul Khosla
Publisher:
Total Pages: 202
Release: 2007
Genre: Pavements, Asphalt concrete
ISBN:

Improved Conditioning and Testing Procedures for HMA Moisture Susceptibility

Improved Conditioning and Testing Procedures for HMA Moisture Susceptibility
Author: Mansour Solaimanian
Publisher: Transportation Research Board
Total Pages: 79
Release: 2007
Genre: Bituminous materials
ISBN: 0309099064

Explores whether combining the environmental conditioning system with the simple performance test would provide a superior procedure for determining the moisture susceptibility of hot-mix asphalt (HMA).