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Now showing items 431-440 of 533
Spatial Impact Network Exposure Model (SINEM) with Integration of Traffic Characteristics and Air Pollution Concentration
(
Qatar Univesrity Press
, 2020 , Conference Paper)
The State of Qatar has undergone rapid economic growth and urbanization during the
last few decades. This has resulted in an increase in the number of motor vehicles in the
country. Therefore, it is vital to monitor and ...
An Artificial Intelligence Approach to Estimate Travel Time along Public Transportation Bus Lines
(
Qatar Univesrity Press
, 2020 , Conference Paper)
Public transportation sectors have played significant roles in accommodating passengers
and commodities efficiently and effectively. The modes of public transportation
often follow pre-defined operation schedules and routes. ...
Optimum Dispersion Parameters of Carbon Nanotubes: Concrete Strength by Response Surface Methodologies
(
Qatar Univesrity Press
, 2020 , Conference Paper)
"This paper implements Response Surface Methodologies (RSM) techniques to illustrate
the maximum carbon nanotubes (CNTs)-concrete mechanical properties responses to the
length, weight fraction and treatment variables. ...
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 ...
Unfair Payment Issues in Construction: Re-Thinking Alternative Payment Method For Tier-1 Contractors to Subcontractors
(
Qatar Univesrity Press
, 2020 , Conference Paper)
Recent statistics reveal substantial increase in late payments cases from 18% to 27%; with over £30 billion unpaid invoices to UK contractors. Furthermore, 82% of overdue invoices are monies owed to subcontractor by tier-1 ...
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 ...
Utility Impact Assessment of Road Projects in the State of Qatar
(
Qatar Univesrity Press
, 2020 , Conference Paper)
Qatar has been blessed with large reserves of natural gas and since the past 20 years its leaders have been busy formulating its path to modernization. Henceforth, the sovereign state has been and is still going through ...
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. ...