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Now showing items 21-30 of 43
Producing High Quality Recycled Hot Asphalt with Increased Reclaimed Asphalt Content – Qatar Experience
(
Qatar Univesrity Press
, 2020 , Conference Paper)
Under the Public Works Authority (PWA) maintenance framework contract in the State of
Qatar, road rehabilitation and maintenance generate considerable amounts of Reclaimed
Asphalt (RA) than can be used in recycled Hot ...
A Study on Using Reclaimed Asphalt Pavement (RAP) in the Construction of New Roads in the State of Qatar
(
Qatar Univesrity Press
, 2020 , Conference Paper)
In the State of Qatar, road engineers started using RAP in the base course of asphalt
pavement from past few years. The use of RAP not only replaces the quantity of virgin
aggregate and binder, it also improves the overall ...
Using Reclaimed Asphalt and Polymer Modified Asphalt (PMA) to Maximize Cost Saving over the Pavement Life-Cycle in Qatar
(
Qatar Univesrity Press
, 2020 , Conference Paper)
Low performing asphalt mixes along with poor construction practices reduce the
pavement serviceability and lead to early failure under repetitive traffic. Government
agencies are sometimes urged to implement maintenance ...
Implementation of Crumb Rubber Modified Binder for Qatar Local Roads Construction Projects
(
Qatar Univesrity Press
, 2020 , Conference Paper)
The continuous increase in the pile up of used vehicle tires in Qatar poses a challenge
contributing to potential environmental pollution problems. The magnitude of this problem
can be drastically reduced by processing and ...
Development of Warm Mix Asphalt with the Aid of Microstructural Characterization
(
Qatar Univesrity Press
, 2020 , Conference Paper)
The polymer-modified asphalt (PMA) reveals different types of advantageous properties
depending on the type of polymer. However, one of the unwanted changes in PMA is the
required higher temperature for mixing and compaction. ...
Novel Method for Assessing Moisture Damage in Asphalt Mixtures
(
Qatar Univesrity Press
, 2020 , Conference Paper)
Moisture damage is a major cause of early pavement deterioration and often accelerates
other distresses such as rutting, fatigue cracking, and raveling. Water infiltrates into the
pavement structure through the cracks and ...
Modeling Airport Ground Access Mode Choice by Trip Purpose: Business vs. Personal Trips
(
Qatar Univesrity Press
, 2020 , Conference Paper)
Air transportation traffic is increasing, and this results in newer and larger airport
investments in outskirts of the cities. Thus, airport ground access is becoming an important
topic to focus on. Indeed, there are many ...
Site-Specific Traffic Loading Estimation Challenges in Structural Pavement Design Process in Qatar: A Case Study
(
Qatar Univesrity Press
, 2020 , Conference Paper)
Upon the design of any pavement structure, three fundamental external design
parameters have to be considered throughout the design process: the characteristics of
the subgrade, traffic loads, and environmental conditions. ...
Modelling the Severity of Plastic Shrinkage in Cementitious Materials
(
Qatar Univesrity Press
, 2020 , Conference Paper)
"Plastic shrinkage cracking in cement-based materials occurs between the mixing and the
final setting of the mixture, where rapid evaporation of the mixed water is the main cause
behind the phenomenon. The induced cracks ...
Dosage Optimization of Polypropylene Fiber for Strength Enhancement of Cementitious Composites
(
Qatar Univesrity Press
, 2020 , Conference Paper)
"Concrete is the most commonly used materials for construction in Qatar as well as in
the world. Exposure to sever environmental conditions causes physical deterioration
of concrete structures and significantly affect ...