Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Determining The Degree Of Aggregate Degradation After Using The Ncat Asphalt Content Tester
Download Determining The Degree Of Aggregate Degradation After Using The Ncat Asphalt Content Tester full books in PDF, epub, and Kindle. Read online Determining The Degree Of Aggregate Degradation After Using The Ncat Asphalt Content Tester ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Determining the Degree of Aggregate Degradation After Using the NCAT Asphalt Content Tester by : Randolph Reyes
Download or read book Determining the Degree of Aggregate Degradation After Using the NCAT Asphalt Content Tester written by Randolph Reyes and published by . This book was released on 1997 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the research conducted was to determine if aggregate degradation takes place and to measure the possible degree of degradation after bituminous mixtures are heated inside the NCAT Asphalt Content Tester. A study was conducted which compared the original aggregate blend (control specimens) to the residual aggregate blend (experimental specimens) obtained after several bituminous mixtures were heated inside the NCAT Asphalt Content Tester. The control specimens and the experimental specimens used to produce the bituminous mixtures were the result of an aggregate sample which was split three times. Two methods of analysis were used to review the gradation results.
Book Synopsis Using Ignition Ovens to Determine Asphalt Content and to Prepare Aggregates for Sieve Analysis by : Robert E. Lee
Download or read book Using Ignition Ovens to Determine Asphalt Content and to Prepare Aggregates for Sieve Analysis written by Robert E. Lee and published by . This book was released on 1996 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Materials and Tests Division's Bituminous Section evaluated the ignition method as an alternative to the solvent method for determining asphalt content. Three ovens (the Gilson Asphalt Binder Ignition Furnace, Model HM 378; the NCAT Asphalt Content Tester; and the Troxler Asphalt Quality Analyzer) were evaluated for accuracy, precision, and performance. Ignition was proven to be an appropriate method of determining asphalt content. The test procedure resulting from this work is Tex-236-F, which is included in Appendix A.
Book Synopsis Sampling Location Impact on Measured Asphalt Content of Hot Mix Asphalt by : Mohammad Abu-Hassan
Download or read book Sampling Location Impact on Measured Asphalt Content of Hot Mix Asphalt written by Mohammad Abu-Hassan and published by . This book was released on 2002 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: In May 2000, the Colorado Department of Transportation (CDOT) requested a forensic study of a project located on I-24 north of Denver. The request was made because, within a year of the 1997 overlay, longitudinal cracking appeared in the surface. Transverse cracks were attributed to reflective cracking. However, the longitudinal cracks appeared to be surface initiated. In October 2000, a forensic team reviewed the project and established a sampling and testing plan to take cores from the roadway. Based on data analysis of the cores, the higher than expected in-place air voids, the low effective asphalt, and segregation within the mat, all contributed to the early cracking.
Book Synopsis Improving Colorado Transportation Through Investigation and Innovation by : Beth Moore
Download or read book Improving Colorado Transportation Through Investigation and Innovation written by Beth Moore and published by . This book was released on 1999 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summary of current research studies.
Book Synopsis Statistical Analysis of Rutting Behavior of HMA Mix Designs by : James A. Crovetti
Download or read book Statistical Analysis of Rutting Behavior of HMA Mix Designs written by James A. Crovetti and published by . This book was released on 1999 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Performance Evaluation of Various Corrosion Protection Systems of Bridges in Colorado by : Yunping Xi
Download or read book Performance Evaluation of Various Corrosion Protection Systems of Bridges in Colorado written by Yunping Xi and published by . This book was released on 2004 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Corrosion of reinforced concrete structures has been a significant problem for many state and transportation agencies since the application of deicing salts was introduced. Much research has been conducted to develop corrosion protection systems that can prolong the life span of reinforced concrete structures. The Colorado Department of Transportation (CDOT) has several routine and experimental measures to prevent corrosion of the rebar including epoxy-coated rebar, calcium nitrite admixture, organic corrosion inhibitors, a thick cover of quality concrete, and a waterproofing membrane covered by an asphalt overlay. An extensive literature review was performed to collect information on various corrosion protection systems that have been used in the U.S. and around the world. Current CDOT practices in terms of corrosion protection measures were reviewed. A draft inspection plan for Colorado's bridge structures was proposed.
Book Synopsis Loading Test of GRS Bridge Pier and Abutment in Denver, Colorado by : Kanop Ketchart
Download or read book Loading Test of GRS Bridge Pier and Abutment in Denver, Colorado written by Kanop Ketchart and published by . This book was released on 1997 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis PCCP Texturing Methods by : Ahmad Ardani
Download or read book PCCP Texturing Methods written by Ahmad Ardani and published by . This book was released on 2000 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents a 5-year evaluation and construction details of nine test sections with varying textural characteristics. Included in the report is an overview of the methodologies used to texture concrete pavement surfaces and a discussion of frictional attributes of various textures at different speeds and their impact on noise properties. Also included in the report are descriptions of texture-measuring devices and texture-installing equipment, a description of the state-of-the-art equipment used to acquire sound pressure levels, plus a thorough discussion of data acquisition/analysis. Frictional characteristics of the individual test sections were evaluated using the ASTM E 274 skid testing procedure.
Book Synopsis Preliminary Environmental Evaluation of Caliber M1000 Deicer for Use in Colorado by : William M. Lewis
Download or read book Preliminary Environmental Evaluation of Caliber M1000 Deicer for Use in Colorado written by William M. Lewis and published by . This book was released on 2000 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Construction and Monitoring of Post-tensioned Masonry Sound Walls by : David B. Woodham
Download or read book Construction and Monitoring of Post-tensioned Masonry Sound Walls written by David B. Woodham and published by . This book was released on 2002 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this project was to document the installation of a post-tensioned concrete masonry sound wall constructed as part of a widening and sound wall project along US 36 near Denver, Colorado. In addition, the wall was instrumented at the time of construction to monitor the loss in prestress in the steel tendons over time due to concrete masonry creep and shrinkage and steel relaxation. Tendon tension was monitored for one year to obtain values for the accumulated losses. Accurate losses in post-tensioned concrete masonry are important for economical design. Currently, there are limited data to support an accurate prediction of prestress loss in concrete masonry.
Book Synopsis Development of Site-specific ESAL by : Sirous H. Alavi
Download or read book Development of Site-specific ESAL written by Sirous H. Alavi and published by . This book was released on 2002 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study was approved by the CDOT's Research Implementation Committee as a high priority research with the goal of improving the accuracy of the existing and forecasted traffic loads of CDOT's highway network. The overall scope of this project involved examination of those resources directly related to the current statewide ESAL classification system and the generation of this final report discussing the research and analysis conducted and recommendation of procedures required for CDOT to develop and implement a more site-specific ESAL classification system. In this study Nichols Consulting Engineers (NCE) analyzed all available CDOT permanent and portable weigh-in-motion (WIM) data.
Book Synopsis Particulate Matter from Roadways by : Chatten Cowherd
Download or read book Particulate Matter from Roadways written by Chatten Cowherd and published by . This book was released on 1998 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Paved roads constitute a major category of PM-10 and PM-2.5 emissions in urban areas. Paved roadway resuspension processes emit antiskid materials, abraded pavement particles, rubber tire fragments, and dirt that is tracked from unpaved areas. In the Denver area, exceedances of the PM-10 standard in late winter and early spring are related to residual road sand loadings from wintertime antiskid controls. This report presents the results of research, sponsored by the Colorado Department of Transportation, to (a) determine the relationships between the paved roadway surface dust characteristics and fine particle emissions, and (b) evaluate emission control measures that reduce road surface silt loadings (either by preventive or mitigative means). Several types of field studies were used in performing this research. The Correlation Studies entailed simultaneous paved road plume profiling and road surface material sampling at three test sites in the Denver metropolitan area. The composition of collected airborne and surface samples were analyzed by chemical and microscopic analysis. The upwind/downwind airborne particulate matter samples that were selected for analysis included PM-10 and PM-2.5, while the road surface samples included the resuspended PM-10 and PM-2.5 from Midwest Research Institute's Dustiness Test Chamber. The Correlation Studies demonstrated that emission control effectiveness for the paved road resuspension processes can be evaluated in terms of reductions of roadway surface material loadings. Additional composite surface sampling of Denver arterial roadways compared the effects of winter sanding and alternative chemical deicers on surface loadings.
Book Synopsis I-76 Truck Study by : David A. Price
Download or read book I-76 Truck Study written by David A. Price and published by . This book was released on 1998 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Portions of the driving lane on I-76 located in the Colorado Department of Transportation's (CDOT's) Region 4 are seriously distressed. To help prolong the life of the Portland Cement Concrete Pavement Region 4 has placed signs advising truckers to use the passing lane between Roggen and the Nebraska state line [approximately 140 miles (225 km)]. A test section well within the signed test area advising the truckers to use the passing lane and a control section just prior to the signed area were established and evaluated over a four year period. Roughness data taken with an Ames Profilograph, slab faulting measured with a Georgia fault meter, and overall physical pavement distress were noted and used as a comparison between driving lane and passing lane within the two sections.
Book Synopsis Long-range Cost Estimation Research Project by :
Download or read book Long-range Cost Estimation Research Project written by and published by . This book was released on 2000 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this project was to research long-range (parametric) cost estimation at the Colorado Department of Transportation (CDOT), utilizing AASHTO's Trns.port Cost Estimation and Decision Support software. Info Tech, Inc., analysis reviewed CDOT's current long-range estimation practices and identified revisions which would be needed to satisfactorily meet CDOT's future cost estimating requirements, i.e., in order to develop consistent and reliable cost estimates when little is known about a project. Both item and contract classifications utilized by CDOT in BAMS/DSS were revised to reflect more logical functional groupings. The new contract work type and item classification were used directly to develop an Interim Solution for Long-Range Cost Estimation that uses historical bid-based default prices. Info Tech analysts also researched Internet sources to identify the availability of major item cost data at the regional and national level, including data for multimodal project types.
Book Synopsis Environmental Liability Study by : Joshua B. Epel
Download or read book Environmental Liability Study written by Joshua B. Epel and published by . This book was released on 2000 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study examines different mechanisms by which the Colorado Department of Transportation (CDOT) can either limit or avoid incurring cleanup costs and liabilities or, if that course is unavailable, recover those costs which must be incurred. The key to this approach is information, obtained as early in the acquisition process as possible. Accurate information about site conditions will allow CDOT to avoid severely contaminated properties, if possible, and to properly value those properties that must be acquired.
Book Synopsis Using Ground Tire Rubber in Hot Mix Asphalt Pavements by : Donna S. Harmelink
Download or read book Using Ground Tire Rubber in Hot Mix Asphalt Pavements written by Donna S. Harmelink and published by . This book was released on 1999 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Documents the construction and performance of the research study which was initiated to address section 1038(d) of the 1991 Intermodal Surface Transportation Efficiency Act (ISTEA). The project selected to demonstrate the crumb rubber process was located on Platt Canyon (SH 75) from Bowles to C470 in the Denver metropolitan area. The project was a low volume roadway and quantities of crumb rubber introduced into the mix were minimal. This was to reduce risk in terms of premature failure and Colorado's limited experience with crumb rubber. Because of this limited experience, the "dry" process was selected. The project contained four different mix designs. A mix containing 1% [20 lb/ton (10 kg/Mg)] crumb rubber, a mix containing 1 lb/ton (0.5 kg/Mg), a mix containing 3 lb/ton (1.5 kg/Mg) and a mix which contained no rubber were placed on the project.
Book Synopsis Interstate Asphalt Demonstration Project by : Donna S. Harmelink
Download or read book Interstate Asphalt Demonstration Project written by Donna S. Harmelink and published by . This book was released on 2000 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents the design and construction of the first rubblization project initiated by the Colorado Department of Transportation. The project was selected to demonstrate the resonant and multi-head breaker methods of rubblization of concrete pavement. Work consisted of rubblizing existing concrete pavement. This study will focus on the cost effectiveness of rubblization on jointed plain concrete pavement with alkali-silica reactivity.
