Evaluating the Effectiveness of Pavement Smoothness Specifications
Author: Khaled Ksaibati
Publisher:
Published: 1995
Total Pages: 278
ISBN-13:
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Author: Khaled Ksaibati
Publisher:
Published: 1995
Total Pages: 278
ISBN-13:
DOWNLOAD EBOOKAuthor: Shahriar Al Mahmood
Publisher:
Published: 2000
Total Pages: 228
ISBN-13:
DOWNLOAD EBOOKAuthor: Khaled Ksaibati
Publisher:
Published: 2002
Total Pages: 119
ISBN-13:
DOWNLOAD EBOOKAuthor: James H. Woodstrom
Publisher: Transportation Research Board
Published: 1990
Total Pages: 44
ISBN-13: 9780309049153
DOWNLOAD EBOOKThis synthesis will be of interest to construction engineers, pavement designers, contractors, and others interested in construction of new highway pavements with smooth surfaces. Information is provided on the various devices and specifications that are being used to obtain smooth pavements. The public rates a pavement primarily on its smooth-riding characteristics and highway agencies recognize that constructing smooth pavements results in fewer problems later and lower annual maintenance costs. This report of the Transportation Research Board describes the devices and specifications highway agencies use to ensure that newly constructed pavements will provide a smooth ride.
Author: G. Elkins
Publisher:
Published: 1990
Total Pages: 13
ISBN-13:
DOWNLOAD EBOOKThe quality of smoothness of a newly constructed or overlaid pavement dictates the beginning of pavement management. Adequate acceptance testing procedures and specifications for pavement smoothness have not been available for flexible pavements. Smoothness specifications based on a 10-ft (3.05 m) straightedge has a number of limitations and is difficult to interpret and administer. This paper describes the results of a comprehensive study of several different roughness measuring devices undertaken to select a suitable device in order to develop and implement improved specifications for pavement smoothness. The candidate devices included the 690D Profilometer, Model 8300 Roughness Surveyor, Maysmeter, California Profilograph, and Rainhart Profilograph.
Author: Estomih M. Kombe
Publisher:
Published: 1993
Total Pages: 62
ISBN-13:
DOWNLOAD EBOOKAuthor: Bouzid Choubane
Publisher: ASTM International
Published: 2007
Total Pages: 89
ISBN-13: 0803155212
DOWNLOAD EBOOK"This new ASTM publication presents the latest information on the practical and developmental aspects of pavement surface evaluation procedures and technologies, including their reliability and relevancy. Seven peer-reviewed papers cover: * Pavement surface characteristics measurement procedures and equipment * Approaches to enhance the reliability and accuracy of pavement surface evaluation systems * Approaches to harmonization between different measurement devices for specific pavement surface condition indicators * Assessment of current pavement condition indicators and their relevancy level for use in asset management * Assessment of factors influencing the interaction of tire/pavement surface characteristics * Assessment of automated distress survey systems * Evaluation of new/promising technologies for pavement condition surveys."--Publisher's website.
Author:
Publisher:
Published: 1995
Total Pages: 94
ISBN-13:
DOWNLOAD EBOOKAuthor: William H. Parcells
Publisher:
Published: 2009
Total Pages: 44
ISBN-13:
DOWNLOAD EBOOKPavement smoothness is a major factor affecting the performance of the highway surface and the safety and satisfaction of the traveling public. Smooth pavement results in better gas mileage, less vehicle wear, and less driver stress and fatigue. Pavement smoothness is the single most important indicator of pavement condition as viewed by the traveling public. Many state highway agencies, including the Kansas Department of Transportation (KDOT), have adopted specifications that set forth a goal of minimal levels of roughness for newly built pavements. Some specifications also include significant incentive/disincentive provisions to encourage contractors to concentrate their efforts on building smooth pavements. This report highlights the development of the smoothness specification for Portland Cement Concrete Pavement (PCCP) beginning in 1985 and for Asphalt Concrete Pavement (ACP) beginning in 1990. The early specifications used the 0.2 inch Blanking Band while evaluating the traces generated using the manual California type profilograph. In 1986, incentive/disincentive clauses allowed bonus payment for PCCP constructed with less than 4 in/mile of surface roughness and penalty (reduced payment) for over 12 in/mile using the 0.2 inch Blanking Band. The implementation of the smoothness specification resulted in dramatic improvement in PCCP smoothness. In 1990 the stage was set for change. The initial projects requiring the use of the profilograph with the 0.2 inch Blanking Band to measure smoothness of ACP provided a high percentage (64%) of bonus level sections thus indicating the need for a modification to the existing specification. Similarly, the PCCP projects built in 1990 also had a high percentage (63%) of bonus level sections while using the 0.2 inch Blanking Band. However, there was one PCCP reconstruction project that had achieved about 47% bonus sections but produced a high frequency vibration in the vehicle when driving at normal speed. A review of the original profilograph traces revealed a short length sine wave roughness that was slightly less than 0.2 inches in amplitude and thus was almost completely covered by the 0.2 inch Blanking Band.
Author: M. Stroup Gardiner
Publisher:
Published: 2003
Total Pages: 24
ISBN-13:
DOWNLOAD EBOOKIn 1989 the Alabama Department of Transportation (ALDOT) added a policy to their smoothness specification that enables payments made to paving contractors to be based on the level of smoothness. The contractor can receive a 5% bonus for above average or a 5% penalty for below average smoothness readings. The measurement of smoothness has been based on the manual extraction of data from profilograph traces based on a 0.2 blanking band and resolution of 0.05. ALDOT has determined that more than three-quarters of all the 0.1 mile segments tested since the implementation of the specification have fallen in the 5% bonus range without an improvement in pavement ride quality. This observation resulted in the decision to conduct a study to determine; 1) if the ProScanTM hardware and software could be used to provide a reliable method of reducing profilograph traces, and 2) to investigate the feasibility and consequences of different smoothness pay factors. The results of the study support the ProScanTM system as a quick, accurate, and replicable method of reducing the profilographs. In addition, it was concluded that ALDOT should change the blanking band to a width of 0.0 and should adopt a combined step and continuous function method of determining incentive pay factors. With these pay factors in place ALDOT would have paid only 96.8% of the bid price for paving projects that brought 102% pay under the old step-wise function.