Details:
-
Creators:
-
Corporate Creators:
-
Corporate Contributors:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Corporate Publisher:
-
Abstract:The Washington State Department of Transportation (WSDOT) has a long history of designing, constructing,
and maintaining chip seal or bituminous surface treatment pavements. However, to date WSDOT has not
developed pavement performance indicators or models to predict chip seal service life, but rather assumes an
average life of 6 to 8 years. Due to funding constraints and good pavement management practices, WSDOT
has increased the number of pavement segments that are candidates for receiving chip seal applications. In
order to improve predictions of chip seal performance and improve their demonstrated cost effectiveness,
chip seal performance indicators are needed.
The objectives of this research project are to evaluate different performance indicators for chip seal
treatments and to develop trigger values for these indicators that will indicate the end of service life and the
appropriate index values for resurfacing. Under Phase I of this study, a formal literature review and detailed
survey of transportation agency practices were conducted to identify which pavement distress or combination
of distresses best characterize the optimal timing for chip seal application. This report summarizes the
findings of the literature review, agency survey, WSDOT pavement management and performance modeling
practices, and a recommendation of potential performance models for further evaluation as additional data
become available.
-
Format:
-
Funding:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type: