Browsing Department of Civil Engineering by Title
Now showing items 524-543 of 631
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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 ... -
Resilient Properties Of Unsaturated Base Materials
(Civil & Environmental Engineering, 2012-07-25)A pavement system basically consists of a surface layer, a base course, a subbase (optional) and the subgrade. As per MEPDG and 1993 AASHTO flexible pavement design guide Resilient Modulus (MR) is used as the primary input ... -
Response Of Unsaturated Silty Sand Over A Wider Range Of Suction States Using A Novel Double-walled Triaxial Testing System
(Civil & Environmental Engineering, 2014-09-17)In recent decades, the state-of-the-art of our understanding of unsaturated soil performance has been considerably enhanced by incorporating novel and advanced features to the conventional testing devices such as direct ... -
Response of Unsaturated Soils Under Monotonic and Dynamic Loading over Moderate Suction States
(2017-09-27)The understanding of the mechanical behavior of the unsaturated soils has been significantly enhanced due to the recent advancement of technology and modifications to the conventional testing devices. However, the ... -
Reuse of Recycled Plastic for Plastic Road Design
(2021-12-21)The ever-increasing volume of traffic and the volatility of daily and seasonal temperatures that are being experienced globally make it essential that the quality and durability of roads are improved. Modifiers can improve ... -
Reuse of Recycled Plastic for Subgrade Treatment
(2022-12-19)Disposal of solid waste becomes a global issue due to it contains a large amount of non- degradable polymers and may lead to many environmental issues. With the scarcity of space for landfilling and due to ever increasing ... -
REUSING OF RECYCLED PLASTIC AS PAVEMENT BASE AND SUB-BASE MATERIALS
(2021-08-10)A large percentage of waste materials is recycled back into the same product from which they originated. In spite of considerable progress in recycling waste materials generated in urban environments, the materials are ... -
Roadway Shallow Water Flow Modeling By Velocity Distribution
(Civil & Environmental Engineering, 2007-09-17)Manning's equation is a widely used method for determining flow discharge in a channel with unconfined gravity flow. The roughness value, n-value, is a critical factor for Manning equation to obtain the accurate amount of ...