archive-edu.com » EDU » I » IASTATE.EDU

Total: 909

Choose link from "Titles, links and description words view":

Or switch to "Titles and links view".
  • Analyze Wind-Loading Data Collected During Hurricane Katrina
    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 Analyze Wind Loading Data Collected During Hurricane Katrina Researcher s Principal investigators Sri Sritharan 515 294 5238 sri iastate edu Iowa State University Project status Completed Start date 04 24 06 End date 05 31 08

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=1158611813 (2015-11-09)
    Open archived version from archive


  • Development of a High Speed Rigid Pavement Analyzer - Phase I Feasibility and Need Study
    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 Development of a High Speed Rigid Pavement Analyzer Phase I Feasibility and Need Study Researcher s Principal investigators Brent Phares 515 294 5879 bphares iastate edu Iowa State University Co principal investigators Halil Ceylan 515 294 8051 hceylan iastate edu Iowa State University Reginald Souleyrette Project status Completed Start date 01 01 06 End date 05 31 08 Publications Report Development of a High Speed Rigid Pavement Analyzer Phase I Feasibility and Need Study 1 95 mb pdf November 2012 Sponsor s partner s Sponsor s Federal Highway Administration Iowa Department of Transportation TPF 5 136 About the research Abstract Objectives The long term goal of this effort is to develop a device that will measure at highway speeds pavement structural condition which is known to impact the performance of PCC and composite pavements Such a system needs to be able to process the collected measurements into an immediately usable form in near real time It is believed that

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=462850269 (2015-11-09)
    Open archived version from archive

  • Feasibility Investigation of Segmentally Precast Bridge Piers for Accelerated Construction
    by principal investigator Research 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 Feasibility Investigation of Segmentally Precast Bridge Piers for Accelerated Construction Researcher s Principal investigators Matt Rouse 515 201 6686 jmr19 iastate edu Co principal investigators Terry Wipf 515 294 6979 tjwipf iastate edu Wayne Klaiber 515 294 8763 klaiber iastate edu Project status Completed Start date 05 01 06 End date 05 31 08 Sponsor s partner s Sponsor s Iowa Department of Transportation Iowa Highway Research Board About the research Abstract The proposed research is to investigate an innovative precast pier system that when successfully developed could result in a significant leap forward in terms of reduced construction time costs and structural performance of bridge piers The system under investigation offers a radically different design approach and details that can reduce the construction time and improve structural performance Key features include steel belts at the ends of

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=-1256536893 (2015-11-09)
    Open archived version from archive

  • Measurements of Seasonal Changes and Spatial Variation in Pavement Subgrade Support Properties: A Link to Pavement Performance (TR-516)
    State University All rights reserved Measurements of Seasonal Changes and Spatial Variation in Pavement Subgrade Support Properties A Link to Pavement Performance TR 516 Moistrue density testing of glacial till subgrade DCP testing of shoulder area Pavment foundation profile Researcher s Principal investigators David White 515 294 1463 djwhite iastate edu Co principal investigators Charles Jahren 515 294 3829 cjahren iastate edu Radhey Sharma Vern Schaefer 515 294 9540 vern iastate edu Student researchers Matthew Cushman Thang Phan Project status Completed Start date 05 01 04 End date 05 31 08 Publications Report Final Report Case Study of Seasonal Variation in the Subgrade and Subbase Layers of Highway US 20 4 8 mb pdf May 2008 Related publications TRB 2009 Paper Seasonal variation and spatial analysis of pavement foundation layers off site Oct 2011 Tech Transfer Summary Seasonal Variation in the Layers of Highway US 20 197 kb pdf Tech transfer summary May 2008 Sponsor s partner s Sponsor s Iowa Department of Transportation Iowa Highway Research Board About the research Abstract Seasonal variations in ground temperature and moisture content influence the load carrying capacity of pavement subgrade layers To improve pavement performance pavement design guidelines require knowledge of environmental

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=1078336354 (2015-11-09)
    Open archived version from archive

  • Evaluation of Elliptical Steel Dowel Performance
    Evaluation of Elliptical Steel Dowel Performance Researcher s Principal investigators James K Cable Cable Concrete Consultation Student researcher Nathan Pierson Project status Completed Start date 05 19 03 End date 05 18 08 Publications Reports Field Evaluation of Elliptical Steel Dowel Performance Final Report 637 kb pdf May 2008 Field Evaluation of Elliptical Steel Dowel Performance Interim Report 1 1 mb pdf December 2006 Tech transfer summary Field Evaluation of Elliptical Steel Dowels 145 kb pdf May 2008 Sponsor s partner s Sponsor s American Highway Technology Federal Highway Administration Fred Carlson Co About the research Abstract Joints are always a concern in the construction and long term performance of concrete pavements Research has shown that we need some type of positive load transfer across transverse joints The same research has directed pavement designers to use round dowels spaced at regular intervals across the transverse joint to distribute the vehicle loads both longitudinally and transversely across the joint The goal is to reduce bearing stresses on the dowels and the two pavement slab edges and erosion of the underlying surface hence improved long term joint and pavement structure performance Road salts cause metal corrosion in doweled joints excessive bearing stresses hollow dowel ends and construction processes are associated with cracking pavement at the end of dowels Dowels are also a cost factor in the pavement costs when joint spacing is reduced to control curling and warping distress in pavements Designers desire to place adequate numbers of dowels spaced at the proper locations to handle the anticipated loads and bearing stresses for the design life of the pavement This report is the third report on the evaluation of elliptical steel dowels This report consists of a graphical analysis of the performance data regarding dowel material shape size configuration and location in

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=-116430456 (2015-11-09)
    Open archived version from archive

  • Evaluation of Lignin Derived from Agricultural Co-products as an Antioxidant in Asphalt (TR-577)
    www ctre iastate edu Copyright 1996 2009 Iowa State University All rights reserved Evaluation of Lignin Derived from Agricultural Co products as an Antioxidant in Asphalt TR 577 Researcher s Principal investigators Chris Williams 515 294 4419 rwilliam iastate edu Iowa State University Student researcher Nicolaus McCready Project status Completed Start date 03 01 06 End date 04 30 08 Publications Report The Utilization of Agriculturally Derived Lignin as an Antioxidant in Asphalt Binder 1 7 mb pdf May 2008 Tech transfer summary Using Lignin as an Asphalt Antioxidant 134 kb pdf May 2008 Sponsor s partner s Sponsor s Iowa Department of Transportation About the research Abstract Oxidation is the primary cause of long term aging in asphalt pavements As a pavement oxidizes it stiffens and can eventually crack The use of an antioxidant as a performance enhancer in an asphalt binder could delay aging thus increasing the life of an asphalt pavement Lignin is a highly available and well studied antioxidant A wet mill ethanol plant produces several co products some of which contain lignin The use of lignin from ethanol production could provide a benefit to asphalt pavements and also give more value to the co products The following research examined the effects of lignin on asphalt pavements Three lignin containing co products were separately combined with four asphalt binders in varying amounts to determine the optimum amount of co product that would provide the greatest benefit to the asphalt binders The asphalt binder and co product blends were evaluated according to Superpave specifications and performance graded on a continuous scale The data indicated a stiffening effect on the binder caused by the addition of the co products The more a co product was added the more a binder stiffened Binder stiffening benefited the high temperature properties

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=-1636637527 (2015-11-09)
    Open archived version from archive

  • Remote Health Monitoring for Asset Management
    University All rights reserved Remote Health Monitoring for Asset Management Experimental sensor for remote health monitoring Researcher s Principal investigator Glenn Washer University of Missouri Columbia Co principal investigator Brent Rosenblad University of Missouri Columbia Project status Completed Start date 05 01 07 End date 04 30 08 Publications Report Remote Health Monitoring for Asset Management 1 91 mb pdf July 2008 Sponsor s partner s Sponsor s Midwest Transportation Consortium Missouri Department of Transportation University of Missouri Columbia About the research Abstract Develop an instrumented pile capable of monitoring the thermal and seismic behavior at a bridge foundation Deploy an instrumented pile under simulated field conditions Assess the effectiveness of the remote monitoring system for asset management Abstract A key challenge to managing fixed assets such as bridges and other transportation infrastructure is monitoring their condition over time Under typical service conditions deterioration resulting from traffic loading and difficult environmental conditions can result in a reduction or loss of service of a particular asset or even life threatening and dangerous failures Extreme events such as earthquakes and floods present a still greater challenge in that the service condition of the asset may change abruptly and without warning leaving managers

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=-1196957956 (2015-11-09)
    Open archived version from archive

  • Laboratory Kneading Compactor Evaluation and In Situ Measurements Database Development
    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 Laboratory Kneading Compactor Evaluation and In Situ Measurements Database Development Researcher s Principal investigators David White 515 294 1463 djwhite iastate edu Project status Completed Start date 01 01 07 End date 04 01 08 Sponsor s partner s Sponsor s Caterpillar About the research Abstract Caterpillar Inc has developed proprietary technology to predict compaction performance for site specific applications The output of the technology is the prediction of a the capability of compaction machines to meet compaction specifications b predicted productivity for specific machines c sensitivity of compaction and productivity to soil moisture and d recommended soil lift thickness with anticipated number of machine passes to meet compaction specifications The technology is site and soil specific It requires standard and specialized testing of the actual earthworks construction soils Results from the soil testing are then input to unique software that converts the input data to the

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=1187793837 (2015-11-09)
    Open archived version from archive