Download or read book Aggregate Tests for Portland Cement Concrete Pavements written by Amir Naoum Hanna and published by . This book was released on 2003 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This digest summarizes the findings from NCHRP Project 4-20C, 'Aggregate Tests Related to Performance of Portland cement concrete Pavements: State of the Knowledge.' It was prepared by Dr. Amir N. Hanna ... from the contractor's final report authored by Dr. Kevin J. Folliard and Mr. Kurt D. Smith ..."--Page 1
Download or read book Aggregate Tests Related to Performance of Portland Cement Concrete Pavement written by Richard C. Meininger and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book D cracking in Portland Cement Concrete Pavements written by Mikael P. J. Olsen and published by . This book was released on 1983 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was conducted to determine the mechanisms involved in the Iowa Pore Index Test and investigate ways to modify and supplement the testing procedure to increase its accuracy and sensitivity. In the study a modified IPIT was developed which utilized chamber pressures up to 1379 kPa (200 psi). Instead of using the volume of water entering the aggregate cores over a specified time period the degree of saturation which occurred in the aggregates at various chamber pressures was used. Relationships between degree of saturation and chamber pressure were developed and found to provide a general index of the aggregate freeze-thaw durability properties.
Download or read book Effect of Larger Sized Coarse Aggregates on Mechanical Properties of Portland Cement Concrete Pavements and Structures written by and published by . This book was released on 2006 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: ODOT is continually searching for ways to improve the cost efficiency of Portland cement concrete without sacrificing concrete strength and stiffness. Because Portland cement is easily the most costly material used in normal concrete, limiting the amount of cement used is the quickest way to achieve cost effectiveness. In addition, limiting the cement content will also help to prevent dimensional instabilities in concrete such as shrinkage and creep. The use of larger sized coarse aggregates may be useful in limiting cement content, yet larger sized coarse aggregates may also decrease concrete strength by weakening the aggregate-cement paste bond. In many transportation structures, such as pavements, concrete strength is not critical, as dimensional stability, porosity, and durability play a more important role. It is possible, therefore, that larger sized coarse aggregates can reduce the cement content and improve these properties. Laboratory research is needed to determine if larger sized coarse aggregates can improve cement efficiency without reducing concrete strength.
Download or read book Optimum Size Coarse Aggregate for Portland Cement Concrete Paving written by American Concrete Paving Association. Materials and Mix Design Technical Subcommittee and published by . This book was released on 1972 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book D cracking in Portland Cement Concrete Pavements written by Steven R. Thompson and published by . This book was released on 1980 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography on Mineral Aggregates Annotated written by Fulton Keller Fears and published by . This book was released on 1949 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Recycled Portland Cement Concrete Pavements for Base Course and Gravel Cushion Material written by Allen L. Cooley and published by . This book was released on 2007 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based upon the work conducted in this study, it was concluded the recycled portland cement concrete pavements are available as an option for the construction of gravel cushion and aggregate base course layers.
Download or read book Guidelines for Early opening to traffic Portland Cement Concrete for Pavement Rehabilitation written by Thomas John Van Dam and published by Transportation Research Board. This book was released on 2005 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Portland Cement Concrete Coefficient of Thermal Expansion Test Protocol and the Impact of CTE on Performance of Jointed Concrete Pavements written by Shervin Jahangirnejad and published by . This book was released on 2009 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Special Report written by and published by . This book was released on 1958 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Defining the Attributes of Good In service Portland Cement Concrete Pavements written by James K. Cable and published by . This book was released on 2004 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Much of the current research in portland cement concrete (PCC) pavements deals with the analysis of early pavement life failures and seeks to find ways to prevent those from reoccurring. The Long Term Pavement Performance (LTPP) portion of the Strategic Highway Research Program (SHRP) has identified some of the key factors in designing and building new PCC pavements. This statement will build on the Iowa Highway Research Board (IHRB) project TR-463, Field Performance Study of Past Iowa Pavement Research: A Look Back. In Iowa and across the nation, there are multiple pavements that were built more than 20 years ago that have been and are continuing to provide very good service to the public. They are found on both state and local routes and in both low and high traffic volume areas. There is a need to learn what went into those pavements, from the subgrade through the surface, that makes them perform so well. The purpose of this research project was to conduct a scoping study that could be used to evaluate the need for additional research to study the attributes of well-performing concrete pavements. The concept of zero-maintenance jointed plain concrete pavements was iterated in this study for long-lasting, well-performing portland cement concrete pavement sections. The scope of the study was limited to a brief literature survey, pavement performance data collection from many counties, cities, and primary and interstate roads in Iowa, field visits to many selected pavement sites, and analysis of the collected data. No laboratory or field testing was conducted for this phase of the project. A problem statement with a research plan was created that could be used to guide the second phase of the project.
Download or read book Proposed Specifications for Portland Cement Concrete Pavements written by American Society of Municipal Engineers and published by . This book was released on 1925 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rapid Test Methods for Asphalt Concrete and Portland Cement Concrete written by Woodrow J. Halstead and published by . This book was released on 1993 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: This synthesis will be of interest to materials and construction engineers, and others interested in the use of rapid test methods for asphalt concrete and portland cement concrete. Information is provided on the various test methods in use for process control and acceptance of these materials, as well as methods under development. State experience with these procedures, as well as discussions from the literature, are presented. There is growing use of rapid test methods for asphalt concrete and portland cement concrete in highway construction. This report of the Transportation Research Board describes the current state of the practice with respect to the use of rapid test methods for these materials. Experience with short-cut and rapid test procedures for process control and acceptance is summarized, and a general description of the methods, their advantages and disadvantages, and their time and labor requirements are discussed based on a review of the literature and a survey of the states.
Download or read book Longitudinal Cracking in Widened Portland Cement Concrete Pavement written by Samuel Owusu-Ababio and published by . This book was released on 2013 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Feasibility of Reclaimed Asphalt Pavement as Aggregate in Portland Cement Concrete written by Michael Berry and published by . This book was released on 2013 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research effort was focused on evaluating the feasibility of using minimally processed reclaimed asphalt pavement (RAP) as aggregate replacement in concrete pavements. This research demonstrated that concretes with up to 50 percent of the fine aggregates and 100 percent of the coarse aggregates replaced with RAP were suitable for concrete pavement. A statistical experimental design procedure (response surface methodology - RSM) was used to investigate proportioning RAP concrete mixtures to achieve desired performance criteria. Based on the results of the RSM investigation, two concrete mixtures were selected for further evaluation: a high RAP mix with fine and coarse aggregate replacement rates of 50 and 100 percent respectively, and a "high" strength mix with one half of the RAP used in the high RAP mix. Both mixes met MDT concrete pavement specifications for slump (1.5 inches), air content (6 percent), and 28-day compressive and tensile strengths (3,000 psi and 500 psi, respectively). These two concrete mixtures were subjected to a suite of mechanical and durability tests to evaluate their potential use in Montana roadways. Mechanical properties tested were compressive and tensile strength, elastic modulus, shrinkage, and creep. Durability tests included alkali-silica reactivity, absorption, abrasion, chloride permeability, freeze-thaw resistance, and scaling. Overall, both mixes performed adequately in these mechanical and durability tests, although it is important to note that the inclusion of RAP had an obvious negative impact on nearly every property tested relative to those of control mixes made with 100 percent conventional aggregates.
Download or read book Soundness Tests of Concrete Aggregates written by Waterways Experiment Station (U.S.) and published by . This book was released on 1958 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
