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Evaluation Of Employment Benefits Of Ultra-Heavy Trucks: Wisconsin Case Study, Katrina Maria Kurniati 2014 University of Wisconsin Milwaukee

Evaluation Of Employment Benefits Of Ultra-Heavy Trucks: Wisconsin Case Study, Katrina Maria Kurniati

Theses and Dissertations

Allowing very heavy trucks, without permits, on United States' highways has been a subject of discussion in the past, and many politicians and industry advocates have argued that there are some benefits to much heavier trucks. Benefits include better air quality, reduced fuel usage, and increased industrial efficiency. The economic analysis of heavier trucks, however, remains incomplete. One way to measure economic benefits is by assessing employment growth. Wisconsin is used as a case study to evaluate employment benefits of ultra-heavy trucks. The current regulation of the maximum gross vehicle weight on all axles in Wisconsin is 80,000 pounds ...


Evaluation Of Pavement Performance Due To Overload Single Trip Permit Truck Traffic In Wisconsin, Valbon Latifi 2014 University of Wisconsin Milwaukee

Evaluation Of Pavement Performance Due To Overload Single Trip Permit Truck Traffic In Wisconsin, Valbon Latifi

Theses and Dissertations

This study researched the impacts of overweight permit vehicle traffic on flexible pavement performance in Wisconsin using field investigations and AASHTOWare MEPDG analyses. A database of Oversize/Overweight (OSOW) single trip permit truck records was analyzed and provided a network of Wisconsin corridors heavily trafficked by OSOW trucks. Four Wisconsin state trunk highways were selected for investigation due to a high level of OSOW truck traffic. The research included traffic counts to confirm the levels of truck traffic on these segments and to verify the high numbers of permits issued for OSOW trucks. Furthermore, the field work included the identification ...


Failures Of Mainline Railway Sleepers And Suggested Remedies-Review Of Current Practice, Wahid Ferdous 2014 SelectedWorks

Failures Of Mainline Railway Sleepers And Suggested Remedies-Review Of Current Practice, Wahid Ferdous

Wahid Ferdous

Over the last two decades, the premature failures of traditional railway sleepers have significantly increased the track maintenance costs. The primary obstacle to minimising this problem is the lack of understanding of the mechanism of sleeper degradation. This paper discusses the different deterioration mechanisms for traditional timber, concrete and steel sleepers and the potential protective measures to minimise these problems. This paper exhaustively reviews the failure mechanisms of these three commonly used sleeper materials with suggested solutions. Fungal decay, end splitting and termite attacks has been identified as the principal causes of timber sleeper failures. On the other hand, concrete ...


Instrumentation To Monitor Bridge Foundation On The Crosstown Project, Brian Welch 2014 Minnesota State University, Mankato

Instrumentation To Monitor Bridge Foundation On The Crosstown Project, Brian Welch

Journal of Undergraduate Research at Minnesota State University, Mankato

The Crosstown Bridge Monitoring Project is located at the intersection of Highway 62 and Interstate I35W a few miles south and west of downtown Minneapolis. The bridge being evaluated is at a railroad overpass located midway along the Crosstown expansion. This research project involved placing instrumentation on the bridge foundation in order to measure the change in the foundation loading during the course of the construction project. For several years there have been questions pertaining to the forces in the pile foundations that support highway embankments. This project placed strain gages on the pile foundations in order to monitor these ...


Assessment Of Policies For Innovative Financing In Infrastructure Systems, Ali Mostafavi, Dulcy Abraham, Charlene Sullivan 2014 Florida International University

Assessment Of Policies For Innovative Financing In Infrastructure Systems, Ali Mostafavi, Dulcy Abraham, Charlene Sullivan

Infrastructure System-of-Systems (I-SoS ) Research Group

Infrastructure systems are drivers of the economy in the nation. A dollar spent on infrastructure development yields roughly double the initial spending in ultimate economic output in the short term; and over a twenty-year period, and generalized ‘public investment’ produces an aggregated $3.21 of economic activity per $1.00 spent [1]. Thus, formulation of policies pertaining to infrastructure investment and development is of significance affecting the social and economic wellbeing of the nation. The aim of this policy brief is to evaluate innovative financing in infrastructure systems from two different perspectives: (1) through consideration of the current condition of ...


Turbulent Circular Culvert Flow: Implications To Fish Passage Design, Amin Mohebbi 2014 University of Nebraska - Lincoln

Turbulent Circular Culvert Flow: Implications To Fish Passage Design, Amin Mohebbi

Civil Engineering Theses, Dissertations, and Student Research

Culverts are popular conveyance structures in America and Canada to be used as a fish passage or in sewage collection and disposal systems. Fish passage design criteria is based on biological capabilities of fish whereas it should satisfy hydraulic and hydrological constraints as well. Failing to provide enough low velocity regions for aquatic organisms may result in their mass extinctions. Currently, proper road crossing design depends on either model studies or numerical simulations via Computational Fluid Dynamic (CFD) packages, both of which are expensive and time consuming. Further, although the design procedures released by FHWA recently ensures safe fish migration ...


An Introduction To Environmental Value Engineering (Eve) And The Eve Assessment Of Horizontal Directional Drilling (Hdd) Versus Open-Cut Construction, Lameck Mairura Onsarigo, Alan Atalah, Wilfred Harold Roudebush 2014 Bowling Green State University

An Introduction To Environmental Value Engineering (Eve) And The Eve Assessment Of Horizontal Directional Drilling (Hdd) Versus Open-Cut Construction, Lameck Mairura Onsarigo, Alan Atalah, Wilfred Harold Roudebush

Alan Atalah

The wastewater collection and water distribution systems in the United States are deteriorating at an alarming rate. The ever-growing need for rehabilitation and replacement of these systems led to the birth of a research program by the United States Environmental Protection Agency, Innovation and Research for Water Infrastructure for the 21st Century, which focused on addressing the water infrastructure needs. There is a need to responsively manage energy and environmental resources, which calls for the use of evaluation tools to compare competing alternatives with a view of adopting the most environmental friendly alternative. This paper gives an overview of the ...


Analysis Of Horizontal Directional Drilling Construction Risks Using The Probability-Impact Model: A Contractor’S Perspective., Lameck Onsarigo, Simon Asinor Adamtey, Alan Atalah 2014 Bowling Green State University

Analysis Of Horizontal Directional Drilling Construction Risks Using The Probability-Impact Model: A Contractor’S Perspective., Lameck Onsarigo, Simon Asinor Adamtey, Alan Atalah

Alan Atalah

All projects are subject to risks that have both a direct and indirect effect on the project cost and time. The risks vary from project to project because of the unique nature of each project. It is important for the project management team to include risk management as an integral part of their project planning and execution. Risk management strategies should be incorporated in every phase of an HDD project to ensure that the project meets the required quality and safety standards, and that the project delivery is within cost and schedule. This paper takes a look at Horizontal Directional ...


Infiltration And Runoff Parameters For Tilled And No-Till Row Crops, Andrew J. Volkmer 2014 University of Nebraska - Lincoln

Infiltration And Runoff Parameters For Tilled And No-Till Row Crops, Andrew J. Volkmer

Biological Systems Engineering--Dissertations, Theses, and Student Research

Infiltration and runoff are hydrologic processes that effect the amount of water available to plants, for groundwater recharge, and for stream flow. No-till planting (NT) is a management practice used to reduce soil erosion, increase water infiltration, and reduce soil water evaporation, and can have great impact on infiltration and runoff. An investigation was conducted to determine the impact of NT on infiltration and runoff when compared to tilled conditions.

Runoff and precipitation data was gathered from sites at Fillmore County, NE, Phelps County, NE, the USDA-ARS North Appalachian Experimental Watersheds (NAEW) near Coshocton, OH, and the Lennoxville Research Station ...


Evaluating The Impact Of Bridge Deck Removal Method On The Performance Of Precast/Prestressed Concrete I-Girders, Shaddi Assad 2014 University of Nebraska - Lincoln

Evaluating The Impact Of Bridge Deck Removal Method On The Performance Of Precast/Prestressed Concrete I-Girders, Shaddi Assad

Construction Systems -- Dissertations & Theses

Wide flange precast/prestressed concrete I-girders have been widely used by several State Departments of Transportation (DOTs) in the last two decades. These girders have many advantages over standard AASHTO I-girders. Their wide and thick bottom flange accommodates a large number of prestressing strands and their wide and thin top flange provides a shorter deck span, reduced girder weight, greater stability in construction, and adequate platform for workers. Despite these advantages, the wide and thin top flange might be disadvantageous when it comes to deck removal, as it is more susceptible to damage. Therefore there is a need to investigate ...


A Comparative Assessment Of Crowded Source Travel Time Estimates: A Case Study Of Bluetooth Vs Inrix On A Suburban Arterial, Fahad Alhajri 2014 Portland State University

A Comparative Assessment Of Crowded Source Travel Time Estimates: A Case Study Of Bluetooth Vs Inrix On A Suburban Arterial, Fahad Alhajri

Civil and Environmental Engineering Master's Project Reports

Travel time is one of the most widely used measures of traffic performance monitoring for the transportation systems. It is a simple concept that refers to the time required to traverse between two points of interest. Travel time is communicated and used by a wide variety of audience such as commuters, media reporters, and transportation engineers and planners. Recent developments within the wireless communication area made it possible to collect travel time data at a relatively low cost. These emerging technologies include mobile phone based technologies, in-vehicle navigation technologies and automatic vehicle identification technologies. Although these technologies offer a great ...


Increased Span Length For The Mgs Long-Span Guardrail System, Nicholas A. Weiland 2014 University of Nebraska - Lincoln

Increased Span Length For The Mgs Long-Span Guardrail System, Nicholas A. Weiland

Mechanical (and Materials) Engineering -- Dissertations, Theses, and Student Research

Long-span guardrail systems have been recognized as an effective means of shielding low-fill culverts while minimizing construction efforts and limiting culvert damage and repair. The current MGS long-span design provided the capability to span unsupported lengths up to 25 ft (7.6 m) without the use of nested guardrail. The excellent performance of the MGS long-span system in full-scale crash tests suggested that longer span lengths may be possible with the current design.

A detailed analysis of the MGS long-span guardrail system was performed using the finite element software program LS-DYNA®. It was shown that the MGS long-span design had ...


Review Of Microbially Induced Corrosion And Comments On Needs Related To Testing Procedures, Mitchell House, W. J. Weiss 2014 Purdue University

Review Of Microbially Induced Corrosion And Comments On Needs Related To Testing Procedures, Mitchell House, W. J. Weiss

International Conference on Durability of Concrete Structures

Concrete is the most widely used material for the construction of the wastewater collection, storage, and treatment infrastructure. The chemical and physical characteristics of hydrated Portland cement may make it susceptible to degradation under highly acidic conditions. As a result, some concrete wastewater infrastructure may be susceptible to a multistage degradation process known as microbially induced corrosion (MIC). MIC begins with the production of aqueous hydrogen sulfide (H2S(aq)) by anaerobic sulfate-reducing bacteria present below the waterline. H2S(aq) partitions to the gas phase where it is oxidized to sulfuric acid by the aerobic sulfur-oxidizing bacteria Thiobacillus that resides on ...


Numerical Simulation Method For Fracture Effect Of Corroded Steel Strand Under Tension, Fumin Li, Yaxu Qu, Yu Zhao, Rong Lu 2014 Purdue University

Numerical Simulation Method For Fracture Effect Of Corroded Steel Strand Under Tension, Fumin Li, Yaxu Qu, Yu Zhao, Rong Lu

International Conference on Durability of Concrete Structures

Steel strand presents characteristic pitting corrosion in chloride environment, which leads PC structures to a serious structural failure even with light presentational corrosion. So it is necessary to analyze the fracture effect of steel strand caused by pitting corrosion. The theoretical analyses are difficult for the presence of complicated threedimension pits, so numerical method becomes a feasible choice. A numerical simulation method for fracture effect of corroded steel strand under tension by the ANSYS software is introduced in this paper, which contains mainly four issues such as fracture criterion, constitutive relation, geometrical models, and simplified mechanical models. The Mises strain ...


Effects Of Stirrups On Bond Behavior Between Concrete And Corroded Steel Bars, Hongwei Lin, Yuxi Zhao, Ming Sun 2014 Purdue University

Effects Of Stirrups On Bond Behavior Between Concrete And Corroded Steel Bars, Hongwei Lin, Yuxi Zhao, Ming Sun

International Conference on Durability of Concrete Structures

Steel corrosion leads to the deterioration of bond between concrete and steel bars. The serviceability and ultimate strength of concrete elements within RC structures are hence affected. Many researchers have studied the bond behavior of corroded steel bars. However, very few studies have investigated the effects of confinements on the degradation of bond strength. The present paper proposed a new kind of beam specimen based on which the effects of stirrups on degradation of bond were investigated. The test results proved that stirrups can effectively increase the bond strength between concrete and corroded steel bars.


Behavior Of Steel–Concrete Composite Beams With Corroded Shear Studs Under Negative Bending Moment, Ju Chen, A. Jiang, W. Jin 2014 Purdue University

Behavior Of Steel–Concrete Composite Beams With Corroded Shear Studs Under Negative Bending Moment, Ju Chen, A. Jiang, W. Jin

International Conference on Durability of Concrete Structures

The behavior of corroded steel–concrete composite beams under hogging moment was studied by experimental investigation and theoretical analysis. A total of eight specimens, six of which had corroded shear studs, were tested. The corrosion rate of studs ranged from 0 to approximately 50%. The constant-current accelerated corrosion method was adopted to accelerate the corrosion process. The loading test results indicated that the bending capacity of the corroded beams decreased slightly with increasing corrosion ratio of the studs. The corroded beams also exhibited an obvious decrease in bending rigid stiffness and increase in the slip between the steel beam and ...


Flexural Behavior Of Rc Beams Under Combined Effects Of Acid–Salt Mist And Carbon Dioxide, Wu Yuan-Zhou, Lv Heng-Lin, Fang Zhong-Nian 2014 Purdue University

Flexural Behavior Of Rc Beams Under Combined Effects Of Acid–Salt Mist And Carbon Dioxide, Wu Yuan-Zhou, Lv Heng-Lin, Fang Zhong-Nian

International Conference on Durability of Concrete Structures

The coupling effects of hydrochloric acid mist, carbon dioxide, and salt mist rich in Cl and SO42– on the degradation of reinforcement concrete (RC) beams were researched with the simulation of colliery ground environment (CGE) and experimental investigation. The results indicated that carbonation of concrete and corrosion of rebar increased slowly as the maximum width of crack became <0.5 mm. Meanwhile, the flexural carrying capacity of the deteriorated beam decreased slightly, while the concrete strength got a small increase first and a large decrease of more than 20% quickly. As the width of crack exceeded 0.5 mm, each target changed rapidly except the carbonation depth. Because of the interaction of deteriorated concrete and corroded rebar, the crack width, and flexural behavior of the beams have discrete correlation with the corrosion of rebar. The failure mode of beams changed from the crushing of compression concrete to the yielding of rebar.


Tensile Bond Between Substrate Concrete And Normal Repairing Mortar Under Freeze–Thaw Cycles, Ye Qian, Dawei Zhang, Tamon Ueda 2014 Purdue University

Tensile Bond Between Substrate Concrete And Normal Repairing Mortar Under Freeze–Thaw Cycles, Ye Qian, Dawei Zhang, Tamon Ueda

International Conference on Durability of Concrete Structures

Concrete patch repair has long been used to repair the damaged concrete structures. In cold regions, freeze– thaw cycle is one of the major damage factors. Not only the material itself is damaged by freeze–thaw cycles, but also the adhesive interface, which is regarded as the weakest part of composite system, degrades under freeze–thaw cycles. Air entraining agent has long been used to increase the freeze–thaw resistance of concrete materials. However, the effect of air entraining agent on the adhesive interface under freeze–thaw cycles has not been explored. The degradation mechanism and failure mode of concrete ...


Development Of Improved Electrodeposition Method For Repair Of Reinforced Concrete Structures, Takahiro Nishida, Nobuaki Otsuki, Atsushi Saito 2014 Purdue University

Development Of Improved Electrodeposition Method For Repair Of Reinforced Concrete Structures, Takahiro Nishida, Nobuaki Otsuki, Atsushi Saito

International Conference on Durability of Concrete Structures

Deterioration of reinforced concrete members and their repair methods have been reported in various concrete published reports. Electrodeposition method is one of these repair methods for repairing deteriorated concrete members using an electrochemical mechanism. The purposes of the electrodeposition method are to fill cracks in concrete and to coat the concrete surface by electrodeposits of chemical compounds. This can be accomplished by passing a weak direct current (1.0–3.0 A/m2 of concrete surface area) between a reinforcing steel bar (cathode) in concrete and an external electrode (anode) located in an external solution near the concrete surface ...


Research On Embedded Sensors For Concrete Health Monitoring Based On Ultrasonic Testing, Shifeng Huang, Mimi Li, Yuesheng Xu, Dongyu Xu, Xinchun Xie, Xin Cheng 2014 Purdue University

Research On Embedded Sensors For Concrete Health Monitoring Based On Ultrasonic Testing, Shifeng Huang, Mimi Li, Yuesheng Xu, Dongyu Xu, Xinchun Xie, Xin Cheng

International Conference on Durability of Concrete Structures

In this article, embedded ultrasonic sensors were prepared using 1–3-type piezoelectric composite and piezoelectric ceramic as the piezoelectric elements, respectively. The frequency bandwidth of the novel embedded ultrasonic sensors was investigated. To obtain the relationship between the receiving ultrasonic velocity and compressive strength, as well as their response signals to crack damage, the sensors were fabricated and embedded into the cement mortar before testing. The results demonstrated that the piezoelectric composite sensor had wider frequency bandwidth than the piezoelectric ceramic sensor. The compressive strength and ultrasonic velocity had a positive linear relationship, with a correlation coefficient of 0.9216 ...


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