Civil and Environmental Engineering Commons^™

Effectiveness Of Vacuum Saturation Preconditioning Regime For Assessing Water Permeability Of High Performance Concrete, Kai Yang, Muhammed Basheer, Changhui Yang, Yun Bai, Adrian Long

International Conference on Durability of Concrete Structures

Saturating high performance concrete (HPC) for assessing water permeability is a challenge. This paper reports a testing program established to determine the reliability and efficiency of an in situ preconditioning regime, the vacuum saturation, for the water permeability test. The vacuum saturation regime was examined through changing the parameters used and to justify if the field conditioning regime is able to yield similar results as in the laboratory, the results after vacuum saturation were statistically analysed and compared with that after incremental immersion. Its accuracy was further examined by additional experiments, whereas factors considered include different concrete mixes and different …

Research On Chloride Penetration Resistance Of Hybrid Fiber Reinforced Self-Compacting Concrete, Wu-Jian Long, Zhe-Ming Mai, Jin-Guang Shi, Tian-Tian Zhao, Wu-Lei Peng

International Conference on Durability of Concrete Structures

The properties of chloride penetration of hybrid fiber reinforced self-compacting concrete (SCC) were investigated in this study. The results show that, the chloride penetration resistance of concrete can be improved by single incorporation either carbon or cellulose fibers. The concrete chloride diffusion coefficient D_RCM of 12-cm length carbon SCC with fiber content of 1.7 kg/m³, 2.72 kg/m³, and 3.4 kg/m³ decreases by 10.3%, 25.5%, and 18.2% compared to reference concrete without any fibers, respectively. Moreover, the concrete chloride diffusion coefficient D_RCM of cellulose SCC with fiber content of 1.2 kg/m³, 1.6 …

Corrosion Of Steel In Concrete And Its Prevention In Aggressive Chloride-Bearing Environments, Luca Bertolini, Maddalena Carsana, Matteo Gastaldi, Federica Lollini, Elena Redaelli

International Conference on Durability of Concrete Structures

This keynote paper deals with the durability of reinforced concrete (RC) structures exposed to aggressive environments characterized by high concentration of chloride ions, namely, marine environments or the use of de-icing salts. The mechanism of chloride-induced corrosion of steel in concrete is introduced, and its influence on the service life of RC structures is analyzed. Factors affecting the time to corrosion initiation are described with regard to both concrete properties and environmental exposure conditions. Design approaches available for achieving durability targets associated with the design service life are analyzed, focusing on studies carried out by the authors in recent years …

Moisture And Temperature Effects On Interface Mechanical Properties For External Bonding, Tamon Ueda, Justin Shrestha, Khuram Rashid, Dawei Zhang

International Conference on Durability of Concrete Structures

In order to develop rational guidelines for strengthening by external bonding, it is necessary to clarify longterm performance of interfacial bonding property. In this paper, moisture effects on bonding properties at FRP–concrete interface and temperature/moisture effects on bonding properties at PCM–concrete interface are presented. Shear bond strength of FRP–concrete interface is affected by moisture because resin–concrete adhesion strength is affected by moisture. Among tested CFRP external bonding systems, wet-layup CFRP systems all show the strength reduction, while prefabricated CFRP systems all show the strength increase after immersion. The bond stress–slip relationship and interfacial fracture energy also change, which can explain …

Simulation Of Conservation Practice Effects On Water Quality Under Current And Future Climate Scenarios, Carlington W. Wallace

Open Access Dissertations

Analysis of the effects of implementing different conservation practices, as well as increased levels of conservation practices under existing and projected future climate, will determine if current conservation practice recommendations will be sufficient to maintain soil and water resources. The Soil and Water Assessment Tool (SWAT) was used to study four watersheds of different sizes (CCW = 680 km2, F34 = 183 km2, AXL = 42 km 2 and ALG = 20 km2) located in Northeastern Indiana. The overarching goal of this study was to evaluate the effect of various agricultural practices on runoff and agricultural chemical losses under current …

Concise Handbook For Temporary Traffic Control - Construction, Maintenance, And Utility Operations, Indiana Ltap, Ohio Department Of Transportation

Indiana Local Technical Assistance Program (LTAP) Publications

This handbook gives the basic principles and provides examples for the design, application, installation, and maintenance of the various types of traffic control devices used in temporary traffic control or for incident management. Traffic control in roundabouts has been included in this version. The guidelines presented are in accordance with the standards provided within the Indiana Manual for Uniform Traffic Control Devices (IMUTCD). This handbook is based upon one created by the Ohio Department of Transportation, Guidelines for Traffic Control in Work Zones. Indiana LTAP expresses thanks to ODOT for their permission to reprint this material.

Assessing The Performance Of A Soy Methyl Ester -Polystyrene Topical Treatment To Extend The Service Life Of Concrete Structures, D'Shawn G. Thomas

Open Access Theses

Experimental results show that soy methyl ester (SME), a derivative of soy bean oil, along with the incorporation of polystyrene (PS) is a non-toxic, biodegradable and renewable material that can be used effectively as a topical concrete surface treatment. While, concrete sealants and topical surface treatments can be used to extend to durability of concrete structures, it is difficult to predict the durability of concrete structures sealed with a sealant or topical surface treatment. This is due to a lack of necessary model inputs that can be used to address the durability of concrete structures treated with these materials. In …

Development And Evaluation Of A Watershed-Scale Hybrid Hydrologic Model, Younghyun Cho

Open Access Dissertations

A watershed-scale hybrid hydrologic model (Distributed-Clark), which is a lumped conceptual and distributed feature model, was developed to predict spatially distributed short- and long-term rainfall runoff generation and routing using relatively simple methodologies and state-of-the-art spatial data in a GIS environment. In Distributed-Clark, spatially distributed excess rainfall estimated with the SCS curve number method and a GIS-based set of separated unit hydrographs (spatially distributed unit hydrograph) are utilized to calculate a direct runoff flow hydrograph, and time-varied SCS CN values and conditional unit hydrograph approach for different runoff depth-based flow convolution are also used to compute long-term rainfall-runoff flow hydrographs. …

Asphalt Pavement Preservation Using Rejuvenating Fog Seals, Ammanuiel A. Kebede

Open Access Theses

Fog seal is a type of treatment that uses a diluted asphalt emulsion to seal and protect an existing asphalt surface from a variety of distresses. Fog seal is sprayed on top of an asphalt pavement surface to improve and protect it from further cracking and raveling. Rejuvenator is also a type of treatment that penetrates into the asphalt pavement and restores its original viscoelastic properties. Similarly, like fog seal, rejuvenators can be sprayed on top of an asphalt pavement surface. The use of rejuvenators has grown rapidly in the past decade. However, little is known about the actual effectiveness …

Artificial Neural Networks For Wireless Structural Control, Ghazi Binarandi

Open Access Theses

We live in an age when people desire taller buildings and longer bridges. These increasing demands of more flexible structures challenge civil engineers to ensure structural safety in the state where they are more prone to extreme dynamic loading, such as earthquakes. Extensive wiring required in traditional structural control applications may be expensive and inconvenient, especially for large scale structures. To improve the scalability, wireless sensors offer a promising alternative. However, the presence of time delay and data loss in a wireless sensor network can potentially reduce the performance of the control system. Here an artificial neural network is proposed …

Techniques And Technologies For Decontaminating Chemically Contaminated Premise Plumbing Infrastructure, Karen S. Casteloes

Open Access Theses

Recent large-scale drinking water chemical contamination incidents in Canada and the U.S. have affected more than 1,000,000 people. In all cases premise plumbing has become contaminated and disparate plumbing decontamination approaches have been applied. Premise plumbing components include the service line and piping within the building as well as various appurtenances (i.e., tanks, valves, fixtures). The overall research goal was to identify techniques and technologies that can be used for premise plumbing decontamination. To achieve this goal two separate studies were conducted and are presented as two independent thesis chapters.

The study described in Chapter 1 was designed to understand …

Characterization Of A Continuous-Flow Reactor For Solar Uv Water Disinfection, Margaret M. Busse

Open Access Theses

Lack of access to safe water is a common problem in many developing countries (UNICEF/WHO, 2011). Fortunately, solar ultraviolet (UV) radiation is abundantly available in many of these same areas, and it has been used to accomplish disinfection of drinking water by processes that involve no electrical power, such as solar water disinfection (SODIS). However, conventional SODIS systems are limited by batch processing and exclusion of UVB radiation, which is the most germicidally-active portion of the UV spectrum (Coohill and Sagripanti, 2008). To address these limitations, a continuous-flow solar UV disinfection system was developed to amplify ambient solar UV radiation, …

Dynamic Green Split Optimization In Intersection Signal Design For Urban Street Network, Peng Jiao

Open Access Theses

In the past few decades, auto travel demand in the United States has significantly increased, but roadway capacity unfortunately has not expanded as quickly, which has led to severe levels of highway traffic congestion in many areas. In theory, the problem of congestion addressed through demand management and roadway expansion. However, system expansion in urban areas is difficult due to the extremely high cost of land; therefore, maximizing the existing capacity therefore often is considered the most realistic option. In urban areas, most of the traffic congestion and delays typically occur at signalized intersections. This thesis aims to prove the …

Mining Big Data To Create A Tool For Empirical Observation Of Continuous Safety Improvement In A Construction Company - A Progressive Case Study In The Lean Environment, Nicolas J. Michuda

Open Access Theses

In any iterative process, without a system of measurement, controlled improvement cannot be recorded. This is especially true in the construction industry, where error occurs, often with fatal repercussions. As part of a process to facilitate the establishment of this metric, an entirely new application was created. The goal of this application is to measure the causal factors that lead to incidents, which will allow the user and administration to track the circumstances and types of incidents. This enables the company to focus on these problem areas and improve through training. By analyzing these incident trends over time, the company …

A Framework For Organizational Performance Assessment In The Construction Industry, Zenith Rathore

Open Access Theses

Organizations have been trying to increase their efficiency and improve their performance in order to achieve their goals. Organizational success is determined by various factors that impact organizational performance. Construction industry is a project based industry which is extremely dynamic in nature. The need to identify the weak points and search solutions to improve performance of construction organization is extremely crucial. Previous research works have primarily focused on the measurement of financial or tangible assets. Industry has always focused on measure of project success. However, previous studies lack the understanding of qualitative factors and their combine effect on organizational performance. …

Failure Pressure And Fatigue Analysis Of The Api 12f Shop Welded, Flat Bottom Tanks, Andres E. Rondon Andueza

Open Access Theses

This study investigates the failure pressure on the API 12F shop welded steel tanks and performs a fatigue evaluation to estimate the permissible number of pressure cycles for these equipment. Four different analyses were carried out on more than 350 finite element models to determine various failure pressure modes of these storage tanks. An elastic analysis considering potential buckling modes was developed to determine the yielding pressure of the tanks. The redistribution of stresses due to inelastic deformations and plastic collapse were evaluated through an elastic-plastic stress analysis considering the plastic hardening of the material. A wind load analysis was …

2016 Directory Of Indiana State, County, City And Town Officials Responsible For Road And Street Work, Indiana Ltap

Indiana Local Technical Assistance Program (LTAP) Directory

Contact information for local agency officials and employees responsible for Indiana’s local road infrastructure.

Pollinator Garden, Paige E. Bradley

Engagement & Service-Learning Summit

The goal of the project is to increase awareness about global climate change and the necessity of environmentally sustainable practice, particularly among the younger citizens of the Lafayette area. The Lyn Greece Boys & Girls Club extended a hand and offered us land to install a pollinator garden on their campus and an opportunity to meet with the kids one-on-one to promote sustainability ideas and help them understand the basics of gardening. The project is as local as possible, using native plants, no pesticides or herbicides, Bennett's Greenhouse (a local business), and the resources on campus to reach out to …

Community-Scale Water Treatment Systems In The Dominican Republic, Water Supply In The Dr

Engagement & Service-Learning Summit

No abstract provided.

Kayapo Media Making: Building On-Site Capacity, Kaitlin Harris

Engagement & Service-Learning Summit

No abstract provided.

Analysis Of A University Bike-Sharing Program And Lessons Learned, Margaret Mcnamara, Jijo K. Mathew

Purdue Road School

Purdue University initiated a bike-sharing program in August 2015 with 13 locations and 50 bikes. The first 14 weeks of the program saw 15,259 rentals for a total of 22,677 hours. The Purdue sustainable transportation staff partnered with Purdue traffic engineering students to monitor usage trends to identify future investment opportunities and changes to the bike sharing contract. In this session we will present the series of analytics performance measures, management dashboards, and changes initiated as a result of this partnership.

Effective Roadway Management Of Septic Systems & Wells, Michael M. Gavelek, Denise H. Wright, Matthew Witt

Purdue Road School

Roadway construction in rural & urban fringe regions impacts properties that utilize septic systems & wells. Due to their fundamental difference from centralized utilities, they can fall through the cracks & create critical path problems & unforeseen costs. Decentralized water & wastewater experts will present engineering fundamentals, construction techniques & costs, regulations & regulatory process, and tips to effectively manage the replacement & protection of septic systems & wells.

Full Depth Reclamation Of Aviation Pavement, Michael W. Buening

Purdue Road School

Full depth reclamation (FDR) has been utilized multiple times in recent years for airport and roadway pavement rehabilitation. The presentation will review FDR and its use as a treatment for aviation pavements.

Indot Signing - Recent Developments For Attraction Signs, Joseph Bruno

Purdue Road School

Summary of INDOT's policy on attraction signing and tips for addressing attraction signs in design plan development for INDOT road projects. Presented at Purdue University Road School on March 9, 2016.

Fhwa Compliance:Results And Responses For 2015/ 2016, Jay Dumontelle, Eryn Fletcher

Purdue Road School

This presentation discuss the results from the FHWA's 2015 Compliance Assessment Program and explains how these results are being used to direct the FHWA's activities in 2016.

Traffic Ticker, Margaret Mcnamara

Purdue Road School

The Traffic Ticker is a web-based tool developed for use by INDOT to monitor interstate conditions in real-time. Based in crowdsourced probe vehicle data, it is linked to a variety of other tools to provide powerful monitoring and after action review capability. The advantages of this tool are demonstrated in case studies spanning winter operations, interstate crashes, and the I-65 N detour route in August 2015.

Design, Operations, And Safety Of High-Speed Approach Rural Roundabouts, David A. Church, James Tobaben

Purdue Road School

High-speed approach rural roundabouts have been found to reduce overall crashes by 71% and injury crashes by 87% and have become an effective tool used by public agencies to improve safety and capacity at rural intersections. In this presentation we will discuss critical design features for effective implementation, including alignment on approach, deflection, splitter islands, lighting, signing, curbing, diameter, design vehicle, and landscaping. Before-and-after results involving safety, operations, and public acceptance will be highlighted at specific US roundabouts.

Ada And Title Vi: Remaining Eligible For Funding, Cathy Gross

Purdue Road School

Learn how to effectively implement ADA and Title VI nondiscrimination and accessibility requirements in your community to become and remain compliant and eligible for federal funds. In this session we will present changes to the law and requirements effective in 2015 and beyond. You will learn what resources are available to get and keep your community on track and find out how several Indiana communities are making strides in ADA and Title VI compliance.

Americans With Disabilities Act And Curb Ramps, Katherine Smutzer

Purdue Road School

INDOT is in the process of adopting the Public Right of Way Accessibility Guidelines (PROWAG) for pedestrian access route design within public right of way. Updates to the Indiana Design Manual and Standard Drawings will be presented and discussed, including revisions anticipated in 2016 to the curb ramp standard drawings and pedestrian signal placement standards. This presentation will include information from the INDOT standards section and INDOT ADA committee.

Evolve Mentor Program, Sheryl M. Proctor, Timothy Wells, Ed Cox, Indiana Department Of Transportation

Purdue Road School

This is a presentation of the EVOLVE mentor program at the Indiana Department of Transportation which shows a model of linking talent strategy to business strategy. This started as a pilot program for Engineers-in-Training who expressed a desire for mentorship and career guidance. The program included 1:1 mentor/mentee pairings as well as group mentoring.