Browsing by Subject "Asphalt"
Now showing items 1-10 of 10
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Aging evaluation of asphalt samples with Low Field Nuclear Magnetic Resonance
( Elsevier Inc. , 2017 , Article)In this study, a recently developed methodology to assess aging of pavements by using Low Field Nuclear Magnetic Resonance (LF-NMR) was applied to asphalt mix samples at different aging states. The ultimate objective of ... -
Asphalt Rideability Specification and Construction of Expressways in Qatar
( Qatar Univesrity Press , 2020 , Conference Paper)Development of an Expressway network with a smooth ride quality is part of the Qatar 2030 Vision. The Public Works Authority (Ashghal) has placed high importance on the asphalt specification and quality of construction of ... -
Assessment of the Current Frequency Calculation Methods Used in the Determination of the Dynamic Modulus Value in Pavement Design and Analysis
( Qatar University Press , 2023 , Conference Paper)The dynamic modulus |E*| is used in the Mechanistic-Empirical Pavement Design Guide (MEPDG) to express the viscoelasticity of asphalt material at a range of temperatures and loading frequencies. As a result, the current ... -
Comprehensive evaluation of long-term aging of asphalt mixtures in hot climatic condition
( Taylor & Francis , 2018 , Article)Aging is an inevitable phenomenon in hot mix asphalt production and during in-service period of flexible pavement operation. This paper presents an experimental evaluation of long-term aging of asphalt mixtures in Qatar. ... -
Evaluation of Combined Excavation Waste and Reclaimed Asphalt Pavement Aggregates for Use in Road Bases and Sub-bases
( OMICS International , 2014 , Article)More than 15 million tons of aggregates are imported each year to Qatar from neighbouring countries. Large quantities of waste materials (around 20 million tons/year) from excavation waste, demolition rubble and reclaimed ... -
Innovative Pavement Materials and Design: Smart Roadways and Smart Road Maintenance for the Future
( Qatar Univesrity Press , 2020 , Conference Paper)break any industry or economy. The transportation construction sector is no exception, however, innovation and doing things differently in this sector has been dead slow for centuries, compared to other industries. Automobiles ... -
Nano-scale moisture damage evaluation of carbon nanotube-modified asphalt
( Elsevier , 2018 , Article)© 2018 Elsevier Ltd In addition to polymer modification, the use of nanomaterials to improve different asphalt properties has recently been found to be beneficial. However, the potential of nanomaterials in pavement ... -
Nanoscale evaluation of multi-walled carbon nanotube’s performance on resisting oxidization of asphalt
( Trans Tech Publications Ltd , 2019 , Conference Paper)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 ... -
Prediction and sensitivity analysis of CNTs-modified asphalt's adhesion force using a radial basis neural network model
( Taylor and Francis Ltd. , 2019 , Article)The expected longer service life of modified asphalt can be jeopardized by different environmental factors, such as moisture, oxidation, etc. which affect the desired properties by altering the adhesive property. An insight ... -
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 ...