Development of Profile-based Smoothness Specification for Asphalt Concrete Overlays PDF Download
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Author: E. G. Fernando
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 142
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Book Description
Author: E. G. Fernando
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 142
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Book Description
Author: Marshall R. Thompson
Publisher:
ISBN:
Category : Asphalt concrete
Languages : en
Pages : 64
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Book Description
Author: Mary Stroup-Gardiner
Publisher: ASTM International
ISBN: 0803134606
Category : Pavements, Asphalt
Languages : en
Pages : 156
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Book Description
This publication contains papers presented at a December 2001 symposium, focusing on hot mix asphalt (HMA) smoothness measurements, specifications, and equipment. Five papers provide insight into the development and implementation of roughness specifications for pavements, and two papers offer natio
Author: Ronald L. Baus
Publisher:
ISBN:
Category : Pavements, Asphalt
Languages : en
Pages : 85
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Book Description
Author: Jeffrey S. Russell
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 140
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Book Description
Author: Dimitrios G. Goulias
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 98
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Book Description
This report focuses on the development of a methodology for determining an end-result smoothness specification for use on newly constructed flexible and rigid pavements. Details of the experimental study and data analysis undertaken to define acceptance levels using several criteria are presented, along with necessary guide-lines that can be used for the training of personnel involved in the implementation of the smoothness specifications. Finally, the report correlates profile index with other roughness indices.
Author: Kelly L. Smith
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 112
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Book Description
Nearly all State highway agencies use smoothness specifications to ensure that hot-mix asphalt (HMA) and portland cement concrete (PCC) pavements are built to high levels of smoothness. About half of all current State smoothness specifications for HMA and more then three-fourths of all current PCC smoothness specifications are centered around the Profile Index (PI), as often measured using a profilograph. The vast majority of these specifications utilize a 5-mm (0.2-in.) blanking band in computing PI (i.e., PI5-mm). Assistance in selecting appropriate IRI and PI0.0 specification limits is needed to provide a basis for modifying current specifications to these more reproducible and portable smoothness indices. This research effort has developed a series of relationships between IRI and PI that can assist States in transitioning to IRI or PI0.0 smoothness specification for HMA and PCC pavements.
Author: Chul Suh
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 126
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Book Description
Author: Marshall R. Thompson
Publisher:
ISBN:
Category : Nondestructive testing
Languages : en
Pages : 14
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Book Description
Author: E. G. Fernando
Publisher:
ISBN:
Category : Pavements
Languages : en
Pages : 194
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Book Description
The Texas Department of Transportation (TxDOT) is implementing smoothness specifications based on profilograph testing as part of its construction quality control/quality assurance (QC/QA) program. Most tests are presently conducted using automated, California-type profilographs in which the equipment is pushed over a prescribed wheelpath. It appears that smoothness specifications will continue to be based on the profilograph, at least for the short term. However, in view of advances in profiling technology, it becomes prudent to investigate other methods of measuring surface profile and develop smoothness specifications based on profilers that offer greater accuracy and higher production rates. Already, a number of districts have expressed concerns about the sensitivity of the profilograph to short wavelengths or high frequency ripples. This observation demonstrates the need for more accurate measurements of surface profile for the purpose of building pavements that offer excellent ride quality, lower road user costs, and longer service lives. In pursuit of its goal of providing smooth pavements, TxDOT initiated a research project with the Texas Transportation Institute (TTI) to develop a smoothness specification for asphalt concrete overlays based on the new generation of pavement profilers that offer greater accuracy in profile measurement relative to the profilographs presently used in construction projects. Among other things, this research project evaluated a number of profile measuring devices to establish the availability of equipment for implementing a new profile-based smoothness specification in Texas. This report presents the findings of the profile equipment evaluation.
