تصفح Theme 2: Materials and Transportation Engineering حسب العنوان
السجلات المعروضة 21 -- 40 من 43
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Evaluating the Operational Impact of Left-Turn Exclusive Number of Lanes: A Case Study from Qatar
( Qatar Univesrity Press , 2020 , Conference Paper)Left-turning movements can significantly reduce the overall capacity of signalized intersections due to the queueing built up. Intersections with heavy left-turning volumes tend to use multiple lanes to accommodate left-turn ... -
Evaluation of Bond Strength Between Carbon Fiber Reinforced Polymer (CFRP) Composites with Modified Epoxy Resins and Concrete
( Qatar Univesrity Press , 2020 , Conference Paper)Rehabilitation and strengthening of concrete structures are becoming more significant in civil engineering applications. The use of externally bonded Fiber Reinforced Polymers (FRP) is one of the methods to strengthen and ... -
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 ... -
Improving Concrete Durability by Using Optimized Aggregate Gradation and Reducing Cement Content
( Qatar Univesrity Press , 2020 , Conference Paper)"This study evaluated the effects of (1) reducing the cementitious content, (2) the use of optimized aggregate gradation (OAG) technique, and (3) the use of Portland limestone cement (Type IL) in Florida Class I pavement ... -
In-Pavement Fiber Bragg Grating Sensor for Vehicle Counting
( Qatar Univesrity Press , 2020 , Conference Paper)Traffic volume studies are conducted to determine the number, movements, and classifications of roadway vehicles at a given location and period. Typically, there are two methods for conducting traffic volume studies: ... -
Innovation in Road Construction Industry: An Analysis of Different Case Studies
( Qatar Univesrity Press , 2020 , Conference Paper)Process improvement and innovation in the field of road construction sector offers significant community and industry benefits, by making an important contribution in economic growth and enhancing the quality of life. ... -
Integrated Accident Resilience Framework (IARF) – A Theoretical Approach Using Spatial and Statistical Analysis
( Qatar Univesrity Press , 2020 , Conference Paper)Throughout the world, road accidents have become a nightmare for any local government. Data shows that every 24 seconds someone dies on the road (WHO, 2018). Generally, there are multiple factors causing road accidents ... -
Mechanical and Durability Characteristics of Roller Compacted Geopolymer Concrete Using Reclaimed Asphalt Pavement
( Qatar Univesrity Press , 2020 , Conference Paper)Every year a large quantity of reclaimed asphalt pavement (RAP) is generated in the USA. Utilization of RAP can solve the storage problem, prevent environmental pollution and reduce construction costs. This study focuses ... -
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 ... -
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 ... -
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 ... -
Optimizing the Thermal Resistance of Concrete Using The Palm Tree Fronds Fibers
( Qatar Univesrity Press , 2020 , Conference Paper)In the past few years, the issue of global warming has become increasingly visible. Record high as well as record low temperatures are being broken worldwide. Snow is melting in the poles and less sunrays are being reflected ... -
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 ... -
Recycled Concrete Used in Subbase in Potential Use for Road Base and Cement Bounded Material (CBM)
( Qatar Univesrity Press , 2020 , Conference Paper)"Structure life cycle and economic developments in Qatar can lead to reconstruction as well as demolition of structures such as buildings and roads. One of the main wastes from demolition work is concrete and reinforced ... -
Reflective Crack Mitigation Using AST Interlayer over Soil-Cement Base for Flexible Pavements
( Qatar Univesrity Press , 2020 , Conference Paper)Flexible pavement over soil-cement base deteriorates over time due to reflective cracking caused by the shrinkage of such base. The propagation of the reflective cracks in overlaying hot mix asphalt (HMA) could be mitigated ... -
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. ... -
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 ... -
Test Procedures for Advanced Characterization of Bituminous Binders Employed for Pavement Construction in Public Works Authority Road Projects - State of Qatar
( Qatar Univesrity Press , 2020 , Conference Paper)This paper illustrates the approach adopted by the Public Works Authority (Ashghal) of the State of Qatar for the advanced chemical and rheological characterization of bituminous binders (both neat and modified). The ... -
Use of Crumb Rubber Modified Binders and Asphalt Mixtures in Public Works Authority Road Projects - State of Qatar
( Qatar Univesrity Press , 2020 , Conference Paper)This paper illustrates the approach adopted by the Public Works Authority (Ashghal) of the State of Qatar for the widespread implementation in road projects of paving technologies related to the use of crumb rubber modified ...