Civil and Environmental Engineering: المرسلات الحديثة
السجلات المعروضة 821 -- 840 من 862
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Generalized spatial aliasing solution for the dispersion analysis of infinitely periodic multilayered composites using the finite element method
( American Society of Mechanical Engineers , 2017 , Article)The finite element (FE) method offers an efficient framework to investigate the evolution of phononic crystals which possess materials or geometric nonlinearity subject to external loading. Despite its superior efficiency, ... -
The Effect of Aluminium Dross on Mechanical and Corrosion Properties of Concrete
( OMICS International , 2014 , Article)It is the objective of this project is to investigate the mechanical and chemical behaviour of new concrete type obtained by adding aluminium dross which is an impure aluminium mixture that results from metals melting and ... -
Recycling of Local Qatar’s Steel Slag and Gravel Deposits in Road Construction
( OMICS International , 2014 , Article)Every year, the State of Qatar generates about 400,000 tons of steel slag and another 500,000 tons of gravel as a result of steel manufacturing and washing sand, respectively. The two materials (by-products) are not fully ... -
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 ... -
Evidential Reasoning–Based Condition Assessment Model for Offshore Gas Pipelines
( American Society of Civil Engineers (ASCE) , 2016 , Article)Condition assessment of oil and gas pipelines is a significant component in pipeline operations and maintenance. Such assessments are used to ensure better decisions for repair and/or replacement to reduce pipelines’ failure ... -
Optimizing postdisaster reconstruction planning for damaged transportation networks
( American Society of Civil Engineers (ASCE) , 2009 , Article)The limited availability of reconstruction resources is one of the main challenges that often confront postdisaster recovery of damaged transportation networks. This requires an effective and efficient deployment and ... -
Planning post-disaster reconstruction efforts of damaged transportation networks
( American Society of Civil Engineers (ASCE) , 2009 , Conference)Planning, Reconstruction Efforts, Transportation, Network Analysis. Planning the reconstruction efforts of damaged transportation networks in the aftermath of natural disasters is a challenging task due to the limited ... -
Developing a framework for pre-design process simulation for green buildings
( American Society of Civil Engineers (ASCE) , 2012 , Conference)There is an increasing awareness towards the construction of sustainable green buildings. Green rating systems worldwide, such as LEED, are providing standards to aid in the construction of green building. During the ... -
Review of existing transportation sustainability initiatives and their applicability to Qatar
( American Society of Civil Engineers (ASCE) , 2012 , Conference)Sustainable development is Qatar's main national goal. The fact that Qatar has secured the World Cup bid for 2022 will make it the first Arab country to host the world cup. This honor and Qatar's plan to advance its ... -
A multi-objective genetic algorithm model for time-cost trade-off analysis of construction projects
( Civil-Comp Press , 2006 , Conference)Time-cost trade-off analysis is one of the most important aspects of construction project planning and control. There are trade-offs between time and cost to complete the activities of a project. Existing methods for ... -
Optimizing resource utilization during the recovery of civil infrastructure systems
( American Society of Civil Engineers (ASCE) , 2010 , Article)Postdisaster recovery efforts of damaged civil infrastructure systems need to be optimized in order to alleviate the adverse impacts of natural disasters on local societies and economies. This paper presents an innovative ... -
Multi-Criteria Decision Making Models for Water Pipelines
( American Society of Civil Engineers (ASCE) , 2016 , Article)The deterioration of water pipelines leads to impaired water quality, increased breakage rate, and reduced hydraulic capacity. The planning of maintenance programs for water pipelines is essential to minimize health and ... -
Integrated performance assessment model for water distribution networks
( Taylor and Francis Ltd. , 2016 , Article)The American infrastructure report card in 2013 rated the US water system infrastructure with grade of ‘D’. The Canadian infrastructure report card in 2012 stated that around 15.4% of Canada’s water infrastructure has a ... -
Developing a framework for calculating LCA normalization factors for the State of Qatar
( Canadian Society for Civil Engineering , 2013 , Conference)Life Cycle Analysis (LCA) has recently emerged as a powerful tool for assessing the environmental impact of materials, systems and processes used in building construction. With its ability to clarify the ambiguities of the ... -
Locating leaks in water mains using noise loggers
( American Society of Civil Engineers (ASCE) , 2016 , Article)Because of their potential danger to public health, economic loss, environmental damage, and energy waste, underground water pipelines leaks have received more attention globally. Researchers have proposed active leakage ... -
Measuring construction materials price fluctuation risk
( Canadian Society for Civil Engineering , 2013 , Conference)Construction projects costs are believed to be highly susceptible to a combination of internal and external factors. One of these factors is the prices of construction materials and the risk of their fluctuation. This paper ... -
Use of local discarded materials in concrete
( Elsevier , 2014 , Article)Steel slag, a by-product of steel manufacturing, is generated in large quantities in Qatar. In fact, it is estimated that more than 400,000tons of steel slag are generated annually in the country. Gravel, resulting from ... -
Combined influence of temperature and flow rate of feeds on the performance of forward osmosis
( Elsevier , 2016 , Article)The effect of the membrane orientation, feeds flow rate, feeds temperature, and combining effect of both temperature and flow rate on the membrane flux was investigated in order to enhance the performance of forward osmosis ... -
Comparison of SimTraffic and VISSIM Microscopic Traffic Simulation Tools in Modeling Roundabouts
( Elsevier B.V. , 2015 , Conference)Abstract SimTraffic and VISSIM are two microscopic traffic simulation tools that are capable of modeling arterial roads with signalized intersections and roundabouts. This study compares the performance of the two simulation ... -
Flexural and interfacial behavior of externally bonded/ mechanically fastened fiber-reinforced polymer-strengthened reinforced concrete beams
( American Concrete Institute , 2014 , Article)The determination of structural behavior requires advanced numerical methods, of which results are substantiated by credible experimental findings. This research aims to create precise finite element models for fiber-reinforced ...
