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  • Iowa Produce Market Potential Calculator
    reserved Iowa Produce Market Potential Calculator Similar related projects Food Product Demand Mapping Researcher s Principal investigator Stephen Andrle Co principal investigator Randy Boeckenstedt Project status Completed Start date 01 01 05 End date 10 31 05 Project webpage http www leopold iastate edu research calculator home htm Sponsor s partner s Sponsor s Leopold Center for Sustainable Agriculture About the research Abstract This calculator was designed to help users

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=803598794 (2015-11-09)
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  • Rehabilitation of Concrete Pavements Utilizing Rubblization and Crack and Seat Methods (TR-473)
    All rights reserved Rehabilitation of Concrete Pavements Utilizing Rubblization and Crack and Seat Methods TR 473 Researcher s Principal investigators Halil Ceylan 515 294 8051 hceylan iastate edu Iowa State University Co principal investigators Brian Coree Kasthurira Gopalakrishnan 515 294 3044 rangan iastate edu Iowa State University Student researchers Tejeswi Kota Reshma Mathews Project status Completed Start date 01 01 02 End date 10 31 05 Publications Report Rehabilitation of Concrete Pavements Utilizing Rubblization and Crack and Seat Methods TR 473 13 mb pdf June 2005 Tech transfer summary ME Design Approach for HMA Overlaid PCC Pavements pdf Oct 2005 Sponsor s partner s Sponsor s Iowa Highway Research Board About the research Abstract Deterioration in portland cement concrete PCC pavements can occur due to distresses caused by a combination of traffic loads and weather conditions Hot mix asphalt HMA overlay is the most commonly used rehabilitation technique for such deteriorated PCC pavements However the performance of these HMA overlaid pavements is hindered due to the occurrence of reflective cracking resulting in significant reduction of pavement serviceability Various fractured slab techniques including rubblization crack and seat and break and seat are used to minimize reflective cracking by reducing the slab action However the design of structural overlay thickness for cracked and seated and rubblized pavements is difficult as the resulting structure is neither a true rigid pavement nor a true flexible pavement Existing design methodologies use the empirical procedures based on the AASHO Road Test conducted in 1961 But the AASHO Road Test did not employ any fractured slab technique and there are numerous limitations associated with extrapolating its results to HMA overlay thickness design for fractured PCC pavements The main objective of this project is to develop a mechanistic empirical ME design approach for the HMA overlay thickness design

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=482 (2015-11-09)
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  • School Zone Safety Handbook
    All rights reserved School Zone Safety Handbook Walking between cars Kids dart across the street Researcher s Principal investigators Shauna Hallmark 515 294 5249 shallmar iastate edu Iowa State University Student researchers Hillary Isebrands Xiaojia Joanna Liu Project status Completed Start date 07 01 04 End date 10 31 05 Publications Report Toolbox to Address Safety and Operations on School Grounds and Public Streets Adjacent to Elementary and Middle Schools in Iowa 8 mb pdf August 2006 Technology News Making school zones safer pdf Oct 2006 Sponsor s partner s Sponsor s Iowa Department of Transportation About the research Abstract This study identifies transportation safety and operational issues at existing school sites in Iowa The study team made site visits collected data and interviewed schools law enforcement and traffic engineers The study identified common problems and solutions to address these issues This toolbox was written and designed for technical and non technical users including traffic engineers school officials law enforcement parents teaching organizations and others who are involved in managing traffic operations and safety around school zones This research primarily focuses on the traffic safety and operation strategies for existing urban elementary and middle schools but many of the solutions are appropriate for consideration in planning for high schools Report Organization The Toolbox to Address Safety and Operations on School Grounds and Public Streets Adjacent to Elementary and Middle Schools in Iowa was developed from the literature and observations interviews and data collected from elementary and middle schools in Iowa Each chapter of the toolbox is presented in a user friendly format that includes many photos to illustrate both problems and solutions to transportation safety and operation issues that exit at the schools in Iowa The visuals within the handbook include photos and sample data forms that are useful for

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=-735299352 (2015-11-09)
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  • Nondestructive Testing Technology for Quality Control and Acceptance of Flexible Pavement Construction
    sponsor Research by keyword Project pages maintained by PI Search research CTRE is an Iowa State University center administered by the Institute for Transportation Address 2711 S Loop Drive Suite 4700 Ames IA 50010 8664 Phone 515 294 8103 FAX 515 294 0467 Website www ctre iastate edu Copyright 1996 2009 Iowa State University All rights reserved Nondestructive Testing Technology for Quality Control and Acceptance of Flexible Pavement Construction Researcher

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=591 (2015-11-09)
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  • Design and Construction Procedures for Concrete Overlay and Widening of Existing Pavements (TR-511, Proj. 6)
    edu Copyright 1996 2009 Iowa State University All rights reserved Design and Construction Procedures for Concrete Overlay and Widening of Existing Pavements TR 511 Proj 6 Example of composite pavement deflected shape 9 kip load plan view exaggerated scale Researcher s Principal investigators James K Cable Cable Concrete Consultation Co principal investigators Halil Ceylan 515 294 8051 hceylan iastate edu Iowa State University F S Fanous 515 294 9416 fanous iastate edu Tom Cackler Kasthurira Gopalakrishnan 515 294 3044 rangan iastate edu Iowa State University Project status Completed Start date 10 01 03 End date 09 30 05 Publications Report Design and Construction Procedures for Concrete Overlay and Widening of Existing Pavements TR 511 Proj 6 5 3 mb pdf September 2005 Sponsor s partner s Sponsor s Federal Highway Administration Iowa Department of Transportation Iowa Highway Research Board About the research Abstract State highway departments and local street and road agencies are currently faced with aging highway systems and a need to extend the life of some of the pavements The agency engineer should have the opportunity to explore the use of multiple surface types in the selection of a preferred rehabilitation strategy This study was designed to look at the portland cement concrete overlay alternative and especially the design of overlays for existing composite portland cement and asphaltic cement concrete pavements Existing design procedures for portland cement concrete overlays deal primarily with an existing asphaltic concrete pavement with an underlying granular base or stabilized base This study reviewed those design methods and moved to the development of a design for overlays of composite pavements It deals directly with existing portland cement concrete pavements that have been overlaid with successive asphaltic concrete overlays and are in need of another overlay due to poor performance of the existing surface The

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=-1283451945 (2015-11-09)
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  • Development and Implementation of Design Recommendations for the Minimization of Timber Deck Panel Differential Deflection
    294 0467 Website www ctre iastate edu Copyright 1996 2009 Iowa State University All rights reserved Development and Implementation of Design Recommendations for the Minimization of Timber Deck Panel Differential Deflection Researcher s Co principal investigators Terry Wipf 515 294 6979 tjwipf iastate edu Brent Phares 515 294 5879 bphares iastate edu Iowa State University Project status Completed Start date 07 01 04 End date 09 30 05 Publications Tech

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=1087568817 (2015-11-09)
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  • Enhancement of Wisconsin DOT NDE Capabilities
    by sponsor Research by keyword Project pages maintained by PI Search research CTRE is an Iowa State University center administered by the Institute for Transportation Address 2711 S Loop Drive Suite 4700 Ames IA 50010 8664 Phone 515 294 8103 FAX 515 294 0467 Website www ctre iastate edu Copyright 1996 2009 Iowa State University All rights reserved Enhancement of Wisconsin DOT NDE Capabilities Researcher s Principal investigators Brent Phares

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=590 (2015-11-09)
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  • Improving PCC Mix Consistency and Production by Mixing Improvements (TR-505, Proj. 11)
    Researcher s Principal investigators Vern Schaefer 515 294 9540 vern iastate edu Co principal investigators Scott Schlorholtz 515 294 8761 sschlor iastate edu Kejin Wang 515 294 2152 kejinw iastate edu Iowa State University Student researcher Benjamin Hermanson Project status Completed Start date 10 01 03 End date 09 30 05 Publications Report Improving Portland Cement Concrete Mix Consistency and Production Rate through Two Stage Mixing 4 5 mb pdf September 2007 Tech transfer summary Two Stage Mixing 156 kb pdf Feb 2008 Sponsor s partner s Sponsor s Federal Highway Administration Iowa Highway Research Board PCC Center Sponsored Research Fund About the research Abstract A two stage mixing process for concrete involves mixing a slurry of cementitious materials and water then adding the slurry to coarse and fine aggregate to form concrete Some research has indicated that this process might facilitate dispersion of cementitious materials and improve cement hydration the characteristics of the interfacial transition zone ITZ between aggregate and paste and concrete homogeneity The goal of the study was to find optimal mixing procedures for production of a homogeneous and workable mixture and quality concrete using a two stage mixing operation The specific objectives of the study are

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=-1771810230 (2015-11-09)
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