A Discussion By The Rigid Pavement Laboratory On The Draft Of The Final Report On Concrete Pavement Investigation At Hamilton Field
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A Discussion By The Rigid Pavement Laboratory On The Draft Of The Final Report On Concrete Pavement Investigation At Hamilton Field
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Author : United States. Army. Corps of Engineers. Ohio River Division Laboratories
language : en
Publisher:
Release Date : 1947
A Discussion By The Rigid Pavement Laboratory On The Draft Of The Final Report On Concrete Pavement Investigation At Hamilton Field written by United States. Army. Corps of Engineers. Ohio River Division Laboratories and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1947 with Pavements, Concrete categories.
Laboratory Study Of High Performance Curing Compounds For Concrete Pavement
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Author : Ramsey Kropp
language : en
Publisher:
Release Date : 2012
Laboratory Study Of High Performance Curing Compounds For Concrete Pavement written by Ramsey Kropp and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with High strength concrete categories.
Portland Cement Pervious Concrete Pavement Field Performance Investigation On Parking Lot And Roadway Pavements
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Author :
language : en
Publisher:
Release Date : 2007
Portland Cement Pervious Concrete Pavement Field Performance Investigation On Parking Lot And Roadway Pavements written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Pavements, Concrete categories.
Portland Cement Pervious Concrete (PCPC) has an excellent performance history in the Southeastern U.S., but until recently has seen little use in environments with significant freeze-thaw cycles. Therefore, assessment of actual field performance is important. This project documents field observations, and nondestructive testing results of PCPC sites located in the states of Ohio, Kentucky, Indiana, Colorado, and Pennsylvania. PCPC is most often used as a pavement for parking lots. Field performance depends on the quality of the mixture as well as proper control of construction and curing. In addition to field observations and nondestructive testing, laboratory testing was performed on cores removed from some of the test sites. Generally, the PCPC installations evaluated have performed well in freeze-thaw environments, with little maintenance required. Construction, use, and maintenance information was obtained during the site visits. The field investigation plan encompassed a thorough visual inspection for signs of distress, two types of surface infiltration measurements, and ultrasonic pulse velocity (UPV) testing at the Ohio, Kentucky, and Indiana sites. At the Colorado and Pennsylvania sites, only one type of surface infiltration test was made. Visual inspection documented cracking and surface raveling, as well as areas that appeared to be clogged. One type of field infiltration test, developed during this research project, used the time to drain a 4 by 8 inch plastic cylinder through a 3/4 inch hole down into the pavement. The second test was used to identify whether pavements required maintenance. The UPV was used in indirect transmission mode, because only the surface of the pavement was accessible. At six of the sites, it was possible to extract cores for laboratory testing. The cores were brought back to the laboratory and tested for void ratio, hydraulic conductivity, and direct transmission UPV. Direct transmission is considered to be more reliable than indirect transmission for UPV. Once these tests were completed, some of the specimens were tested for compressive or splitting tensile strength. Some of the cores were cut into top and bottom specimens, to compare the properties through the pavement thickness. The data are recorded in tables and plots. Significant differences were observed between cores from pavements that used gravel and crushed limestone coarse aggregates. The use of gravel as a coarse aggregate may facilitate more effective and uniform compaction. The laboratory hydraulic conductivity results were plotted against the field drainage times, so that in the future the field test may be used to estimate PCPC infiltration capability. The installations have not shown any signs of freeze-thaw damage. Some pavements have had surface raveling, which generally stops after a few months of use. Saw cut joints had less raveling than tooled joints. A few have cracks, which may be attributed to overloading or long spaces between joints. Some of the pavements had very poor infiltration capability due to improper installation. Most of the installations are performing well, but it is also true that many in the area are relatively new. Therefore, they should be examined again in the future, probably at 5 and 10 years from the publication of this report. This report serves as a benchmark of the pavement condition observed at the time of this study.
Long Term Performance Of Accelerated Rigid Pavements Project Cxmp 13 0006 07
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Author : Ardani Ahmad
language : en
Publisher:
Release Date : 1996
Long Term Performance Of Accelerated Rigid Pavements Project Cxmp 13 0006 07 written by Ardani Ahmad and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Pavements categories.
This report describes the post-construction evaluation of the fast track pavement in Sterling, Colorado. The field evaluation consisted of visual inspection, fault measurement, profile measurement and distress survey. A set of falling weight deflectometer (FWD) measurements was also acquired to assess the structural responses and to evaluate load transfer efficiency between the slabs. The results of this study demonstrated that fast track concrete can be as durable as the conventional concrete pavement. After seven years of being in service the pavement has shown no sign of fatigue, only some minor distresses unrelated to fast track techniques.
Material And Construction Optimization For Prevention Of Premature Pavement Distress In Pcc Pavements
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Author :
language : en
Publisher:
Release Date : 2008
Material And Construction Optimization For Prevention Of Premature Pavement Distress In Pcc Pavements written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Pavements, Concrete categories.
In Phase I, the research team contacted each of 16 participating states to gather information about concrete and concrete material tests. A preliminary suite of tests to ensure long-term pavement performance was developed. The tests were selected to provide useful and easy-to-interpret results that can be performed reasonably and routinely in terms of time, expertise, training, and cost. The tests examine concrete pavement properties in five focal areas critical to the long life and durability of concrete pavements: (1) workability, (2) strength development, (3) air system, (4) permeability, and (5) shrinkage. The tests were relevant at three stages in the concrete paving process: mix design, preconstruction verification, and construction quality control. In Phase II, the research team conducted field testing in each participating state to evaluate the preliminary suite of tests and demonstrate the testing technologies and procedures using local materials.
Analysis Design And Construction Of Transverse Joint Load Transfer Systems For Rigid Pavements
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Author : Raymond K. Moore
language : en
Publisher:
Release Date : 1994
Analysis Design And Construction Of Transverse Joint Load Transfer Systems For Rigid Pavements written by Raymond K. Moore and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Dowels categories.
The report discusses the evolutionary developments in mechanistic dowel behaviour theory proposed by Bradbury, Grinter, Friberg, Lessels, Timoshenko, and Westergaard. New findings relating to dowel bar behaviour obtained from finite-element modelling are discussed. A sampling of pavement performance model which use empirical or empirical-mechanistic statistical regressions to estimate load transfer performance (expressed as transverse joint faulting) in terms of material, environmental and traffic variables not considered by theoretical analysis is presented. The findings from a limited number of field performance and laboratory studies are summarised.
Continuously Reinforced Concrete Pavements
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Author : J. M. Gregory
language : en
Publisher:
Release Date : 1974
Continuously Reinforced Concrete Pavements written by J. M. Gregory and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with Pavements categories.
Preliminary Report To U S Engineer Office San Francisco California On Concrete Pavement Investigations At Hamilton Field
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Author :
language : en
Publisher:
Release Date : 1944
Preliminary Report To U S Engineer Office San Francisco California On Concrete Pavement Investigations At Hamilton Field written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1944 with Pavements, Concrete categories.
Prestressed Concrete Pavements
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Author : National Research Council (U.S.). Highway Research Board. Committee on Rigid Pavement Design
language : en
Publisher:
Release Date : 1963
Prestressed Concrete Pavements written by National Research Council (U.S.). Highway Research Board. Committee on Rigid Pavement Design and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with Technology & Engineering categories.
Design investigations and limited testing of model and prototype slabs indicate that prestressed pavements permit a more efficient use of construction materials in terms of required pavement thickness. Prestressed pavements can be designed with fewer joints and with less probability of cracking than conventional rigid pavements, thereby promising extended pavement life and reduced maintenance requirements. Information relative to the design and construction of prestressed concrete pavements is presented. Recommendations are developed on planning, design, and areas of engineering investigation and research. Minimum tests are recommended for experimental highway pavements. Design variables are discussed with factors affecting design.
Overlay Design And Reflection Cracking Analysis For Rigid Pavements
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Author :
language : en
Publisher:
Release Date : 1977
Overlay Design And Reflection Cracking Analysis For Rigid Pavements written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Pavements categories.
Fatigue cracking and reflection cracking criteria were developed and incorporated into a design procedure for flexible and rigid overlays of rigid pavements. Linear elastic layered theory is the basic model used to compute stresses and strains in the pavement system, which are then input to the fatigue and reflection cracking models. The fatigue criteria developments resulted from analyses of the performance of rigid pavements at the AASHO Road Test.