161 pages - Publisher: ASTM; (June 2003)
Language: English - ISBN-10: 0803134606 - ISBN-13: 978-0803134607
Maximize the Quality and Longevity of any Highway Work: Ten
peer-reviewed papers give you a timely look at HMA smoothness
measurements, specifications, and equipment. Evidence shows that
pavements constructed with low roughness measurements perform longer
with fewer needed maintenance activities than pavements with a higher
level of initial roughness. This collection of papers, written by
industry experts, provides and overview of the current approaches to
constructing smooth HMA pavements.
Three sections cover: State Agency Perspectives
- provides insight into both the history of the development and the
implementation of ride quality specifications for new hot mix asphalt
pavements in Alabama, Arizona, New Jersey, Virginia, and Tennessee.
These papers highlight the wide range of differences in equipment and
approaches used to quantify HMA smoothness by state agencies across the
country. This information will provide the readers with insight into
complexities associated with developing and implementing ride quality
specifications. National and International Perspectives -
uses analysis of the Long Term Pavement Performance (LTPP) national
pavement database to determine the effect of various construction
alternatives on the smoothness of the final HMA surface. It also
presents correlation equations that relate the traditional, but slow,
method of measuring roughness with a hand-operated profilograph to that
measured with the state-of-the-art vehicle-mounted. A second paper
compares the use of six devices for measuring roughness on recently
constructed Taiwan highways. This information will prove especially
useful for agencies faced with assessing ride quality in confined urban
areas. Equipment Comparisons, Materials Considerations, and Analyses
- focuses on how various HMA mixtures, friction courses, and
construction practices influence smoothness measurements and pavement
quality; and compares the results obtained from an inclinometer profiler
and a vehicle mounted profiler when used to test a wide range of HMA
mixtures. Correlations between construction practices and their
influence on roughness are also presented. It also discusses a new
method for analyzing the raw profile obtained by a wide range of
profilers. This analysis method can be used to improve data processing
for any equipment that collects the raw profile.