College of Engineering: المرسلات الحديثة
السجلات المعروضة 1321 -- 1340 من 8768
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Evaluation of Federal Highway Administration’s Traffic Noise Model for Pavements in Qatar
( Springer Nature , 2020 , Book chapter)Traffic noise is an irritating problem especially for residents near major transportation corridors. It’s in the interest of transportation agencies to check the noise level to develop measures to reduce noise if it exceeds ... -
Disruption factor of asphalt mixtures
( Taylor & Francis , 2012 , Article)Typically, aggregate gradation is selected to meet Superpave mix design specification; however, many Superpave mixtures have exhibited deficient field performance. The porosity of the dominant aggregate size range (DASR), ... -
Study on the use of low field nuclear magnetic resonance for detecting asphalt aging
( CRC Press/Balkema , 2017 , Conference)Authors of this paper recently introduced the application of Low Field Nuclear Magnetic Resonance (LF-NMR) to evaluate the aging state of asphalt mix samples. This method was able to determine the aging trends of asphalt ... -
Nanoscale evaluation of multi-walled carbon nanotube’s performance on resisting oxidization of asphalt
( Trans Tech Publications Ltd , 2019 , Conference)Nanotechnology has contributed significantly to different subfields of the construction industry, including asphalt pavement engineering. The improved properties and new functionalities of the nanomaterials have provided ... -
Characterisation of fatigue resistance of alternative pavement design for the state of Qatar
( Taylor and Francis - Balkema , 2014 , Conference)Asphalt mixtures have been designed in the past in the State of Qatar to safeguard against permanent deformation associated with high temperatures. These mixtures are typically designed to have low content of unmodified ... -
Evaluation of traffic noise in the state of qatar
( CRC Press/Balkema , 2018 , Conference)Mitigating traffic noise is a major concern for transportation departments worldwide. A number of noise mitigation procedures are recognized to control noise emitting from traffic stream. However, noise reduction potential ... -
Characterisation of air voids in w-fam samples using x-ray ct imaging
( CRC Press/Balkema , 2018 , Conference)This study documents the use of high-resolution X-Ray Computed Tomography to characterise air void distribution in Fine Aggregate Mixtures (FAM) prepared using Warm Mix Asphalt (WMA) additives (W-FAM). Specimens were imaged ... -
Assessment of linear and nonlinear viscoelastic responses of warm-mix asphalt binders
( CRC Press/Balkema , 2015 , Conference)Warm-Mix Asphalt (WMA) technology is widely used in the paving industry due to its impact on reduction of asphalt mixing and compaction temperatures. Characterisation of WMA in the past had focused on evaluating the linear ... -
Fatigue characterisation of full-scale pavements using viscoelastic continuum damage approach for qatar
( CRC Press/Balkema , 2015 , Conference)The population and economy in Qatar have been expanding significantly in the past six years. Accordingly, Qatar is encountering huge development in infrastructure. The existing mix design methods have been developed in the ... -
Measurements of laminar flame speeds of alternative gaseous fuel mixtures
( American Society of Mechanical Engineers (ASME) , 2015 , Article)Global warming and the ever increasing emission levels of combustion engines have forced the engine manufacturers to look for alternative fuels for high engine performance and low emissions. Gaseous fuel mixtures such as ... -
Scalar dissipation rate statistics in turbulent flows using Planar Laser Induced Fluorescence measurements
( Elsevier , 2012 , Article)A shearless mixing layer with isotropic decaying turbulence has been examined with a turbulent axisymmetric opposed-jet flow and a plume in pipe flow. The study has been carried out experimentally with Planar Laser Induced ... -
Evaluation and calibration of dynamic modulus prediction models of asphalt mixtures for hot climates: Qatar as a case study
( Elsevier , 2022 , Article)The dynamic modulus (|E*|) of asphalt mixtures is one of the most important inputs in Mechanistic-Empirical (ME) pavement analysis and design. Several models have been developed to predict the dynamic modulus based on ... -
Review on sustainable production of biochar through hydrothermal liquefaction: Physico-chemical properties and applications
( Elsevier Ltd , 2020 , Article Review)This review examines in detail the production and characteristics of biochar resulting from hydrothermal liquefaction. Specifically, the impact of feedstocks and different process parameters on the properties and yield of ... -
Impact of Aging on the Microstructure of Asphalt Binder Modified with Antioxidant Additives and Copolymers
( Chinese Society of Pavement Engineering , 2023 , Article)The effect of long-term aging on asphalt binders mixed with antioxidant additives and copolymers demonstrated potential for retarding oxidative aging at the nanoscale based on atomic force microscopy (AFM) characterization. ... -
Comparative Characterization of Field and Laboratory-Aged Binders Modified with Antioxidant Additives and Copolymers Using Fourier Transform Infrared Spectroscopy and Gel Permeation Chromatography
( American Society of Civil Engineers (ASCE) , 2022 , Article)This study investigates the behavior of antioxidant additives and copolymers to an asphalt binder by comparing laboratory-aged (up to 60 h) and antioxidant-modified binders with binders extracted from field cores. To ... -
Rheological, Thermal, and Chemical Evaluation of Asphalt Binders Modified Using Crumb Rubber and Warm-Mix Additive
( American Society of Civil Engineers (ASCE) , 2022 , Article)This study evaluates the potential of producing warm-mix asphalt (WMA) using a wax-based additive (Sasobit) in a binder modified using crumb rubber (CR). This binder is formulated for very hot climates and has a grade of ... -
Influence of temperature on tire-pavement noise in hot climates: Qatar case
( Elsevier , 2021 , Article)The ambient air temperature greatly influences tire-pavement noise measurements. Therefore, various international standards recommended a temperature correction factor to compensate for noise measurements at varying ... -
Assessment of Pavement Performance Management Indicators Through Analytic Network Process
( Institute of Electrical and Electronics Engineers Inc. (IEEE) , 2022 , Article)Pavement industry is very critical for any public authority looking after the safety and comfort of its citizens because it is the backbone of many transportation networks. Studying the factors that affect the pavement ... -
Efficient and Privacy-Preserving Cloud-Based Medical Diagnosis Using an Ensemble Classifier With Inherent Access Control and Micro-Payment
( Institute of Electrical and Electronics Engineers Inc. , 2023 , Article)Decision tree (DT) models are widely used in medical applications where the size of the data sets is usually small or medium. Moreover, DT ensemble models are preferred over single DT models because of their higher accuracy ... -
Autoignition of n-heptane in a turbulent co-flowing jet
( Elsevier , 2015 , Article)N-heptane autoignition in turbulent co-flowing jets with preheated air is studied using the one-dimensional turbulence (ODT) model. The simulations are designed to investigate the effects of molecular and turbulent transports ...
