Browsing Dissertations & Theses by Title
Now showing items 478-497 of 583
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QUALITATIVE EVALUATION OF CFRP-CONCRETE BOND USING NON-DESTRUCTIVE AND DESTRUCTIVE TESTING METHODS
(2018-05-10)CFRP (Carbon Fiber Reinforced Polymer) laminates have been used as externally bonded reinforcements for retrofitting and structural strengthening of concrete structures. The adequacy of the CFRP bonding highly depends on ... -
Qualitative Evaluation Of Transportation Construction Related Social Costs And Their Impacts On The Local Community
(Civil & Environmental Engineering, 2012-07-25)Although construction is valuable after completion, it can cause many disturbances throughout the duration of the project. These negative impacts, such as economic losses and annoyances, which face the community surrounding ... -
Quantification And Geostatistical Mapping Of Soluble Sulfates In Soils Along A Pipe Line Alignment
(Civil & Environmental Engineering, 2013-07-22)Sulfate induced heave is a growing concern for civil engineering projects utilizing calcium based soil stabilizers. Therefore, addressing sulfate concentrations in soils is vital to the success of a civil engineering ... -
QUANTIFYING SHALLOW DEPTH CONCRETE DELAMINATIONS USING IMPACT ECHO
(2020-07-20)Delamination is a type of deterioration commonly found in concrete structures. It may form due to corrosion of embedded steel, poor construction, excessive vibration, or lack of bonding in composite construction. Impact ... -
QUANTITATIVE NON-DESTRUCTIVE EVALUATION (NDE) OF FRP LAMINATE-CONCRETE BOND STRENGTH
(2017-12-06)Repair and rehabilitation methods for civil infrastructure have become a topic of great interest to engineers. Fiber Reinforced Polymer (FRP) is considered as one of the most popular and practical solutions for strengthening ... -
Quantitative Non-Destructive Evaluation of Rebar Corrosion in Concrete
(2022-05-17)**Please note that the full text is embargoed until 5/16/2024** ABSTRACT: Corrosion of rebar is considered the leading cause of deterioration in concrete structures. When steel rust, it occupies larger volume and creates ... -
Quantitative Non-destructive Evaluation Of Rebar Diameter And Corrosion Damage In Concrete Using Ground Penetrating Radar
The purpose of this study is to develop new methods for quantitative estimation of rebar diameter and loss of area of rebar due to corrosion using Ground Penetrating Radar (GPR). The existing methods of determining the ... -
Rainfall induced distress in low volume pavements
Annual expenses of distresses caused by volume change of expansive soils induce significant financial burden on maintenance authorities. The problems occur as the expansive soils within the unsaturated zone of the soil ... -
Rainfall Simulation for Investigating Hydrologic Responses to Storm Characteristics and Facilitating Frequency Analysis
(2019-08-06)Hydrologic and Hydraulic practices depend on the characterization of extreme precipitation that is rare in nature. Despite the advancement in sensing technology, the observation record of extreme rainfall with good ... -
RAINFALL-INDUCED SLOPE FAILURE – AN EARLY WARNING SYSTEM
(2021-12-16)Globally, slope failures cause substantial death tolls and economic loss. Embankments constructed on high plasticity clay are vulnerable to cyclic swelling and shrinkage when subjected to climate. Thus, over time, soil ... -
A Refined Approach To Identifying And Quantifying Clay And Non -clay Minerals In Expansive Soils
(Civil & Environmental Engineering, 2014-07-14)Expansive soils exhibit substantial swelling and shrinkage due to moisture fluctuations. Predicting this volume change behavior of expansive soils has been a major challenge to the engineers in the past few years. One of ... -
A Refined True Triaxial Apparatus For Testing Unsaturated Soils Under Suction-controlled Stress Paths
(Civil & Environmental Engineering, 2009-09-16)A novel, computer-driven, true triaxial (cubical) apparatus has been developed to test unsaturated soil specimens under suction-controlled multi-axial stress paths that are not achievable in a conventional cylindrical ... -
Regional Prioritization Of Corridors For Traffic Signal Retiming
(Civil & Environmental Engineering, 2007-08-23)Every three to four years, the North Central Texas Council of Governments (NCTCOG) funds signal retiming projects to improve air quality in the Dallas-Fort Worth region. As sufficient funds are not available to retime all ... -
Regression Model For Prioritization Of Corridors When Retiming Traffic Signals
(Civil & Environmental Engineering, 2008-04-22)Traffic signals are used by transportation engineers to safely and efficiently manage vehicle, bicycle and pedestrian traffic on roadways. However, to maintain the effectiveness of traffic signals, traffic signals should ... -
The Relation Between Freeway Average Speed And Speed Noise
(Civil & Environmental Engineering, 2014-09-17)A significant amount of energy could be saved by applying traffic management policies. Many factors affect the fuel consumption rate, and the most important traffic-related ones include variables such as speed, number of ... -
REMAINING SERVICE LIFE ESTIMATION AND PROBABILISTIC ANALYSIS OF REINFORCED CONCRETE SEWER PIPELINE SYSTEMS
(2019-08-26)The serviceability and structural performance of reinforced concrete pipes could deteriorate for many reasons. The loss in structural capacity and other structural operations may drastically affect the surrounding environment, ... -
REMAINING USEFUL LIFE PREDICTION OF WATER PIPES USING ARTIFICIAL NEURAL NETWORK AND ADAPTIVE NEURO FUZZY INFERENCE SYSTEM MODELS
(2018-05-08)The U.S. water distribution system contains thousands of miles of pipes with differing materials, sizes, and ages. These pipes experience physical, environmental, structural and operational parameters that cause corrosion ... -
Removal Of Carbonyl Sulfide Using Compost Biofilter: Measurement Of Removal Rates And Elimination Capacity In Conjunction With Hydrogen Sulfide
(Civil & Environmental Engineering, 2007-08-23)A lab study using biofiltration was conducted using three PVC columns as biofilters, with hardwood chips and compost as the media. Previous research determined the removal efficiency of carbonyl sulfide alone. (Nawal, 2004) ... -
Repair Of Impact-damaged Prestressed Concrete Bridge Girder Using Glass FRP Rebar
Overpass girders are risked by the impact of the traffic, over height vehicle, travelling under the structure, creating a hazard for the drivers over and under the bridge.When a bridge girder is damaged the repair solution ... -
Resilient Moduli Properties Of Compacted Unsaturated Subgrade Materials
(Civil & Environmental Engineering, 2013-03-20)According to the new Mechanistic Empirical Pavement Design Guide (MEPDG) and 1993 AASHTO flexible pavement design guide, Resilient Modulus (MR) has been used extensively as an important material property in structure design ...