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Crack sealants are often utilized as a preservation tool in asphalt pavements. When a hot mix asphalt overlay is placed on top a pavement containing crack sealants, a bump and additional transverse cracks sometimes occur in the new asphalt overlay. These bumps and sometimes, transverse cracks are initiated during breakdown rolling and become progressively more severe upon further compaction. This paper presents results of a five-year study designed...
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For almost a century, W. A. Bentley caught and photographed thousands of snowflakes in his workshop at Jericho, Vermont, and made available to scientists and art instructors samples of his remarkable work. His painstakingly prepared images were remarkable revelations of nature's diversity in uniformity: no two snowflakes are exactly alike, but all are based on a common hexagon. In 1931, the American Meteorological Society gathered the best of Bentley's...
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Budding costume designer Lola lives an extraordinary life in San Francisco with her two dads and beloved dog, dating a punk rocker, but when the Bell twins return to the house next door Lola, recalls both the friendship-ending fight with Calliope, a figure skater, and the childhood crush she had on Cricket.
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Creating a Web Site is the kids' guide to learning basic website design! From planning to perfecting, this book walks you through the entire process of building your own website, with easy-to-read instructions and plenty of pictures every step of the way. Good planning saves you a ton of work, so you'll begin by getting your ideas out of your head and onto paper. Next, you'll find a template that already has the basic features you want, so you can...
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Corrosion resistant alloys and non-metallic coating have been tested by exposure to Glenwood Springs geothermal water in a test loop constructed for the purpose adjacent to the Glenwood Springs geothermal well. Several alloys were tested. None of the materials showed any measurable degradation during the test. However, it is recommended that the results be applied with caution; several factors suggest that the data from these tests might be overly...
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In recent years, prestressed concrete bridges have dominated the bridge type selection processes in Colorado. This can be attributed to a lack of steel mills combined with a strong presence of precast fabricators in the region. In addition, a lack of readily available economical and innovative procedures to design and construct steel bridges has hindered the industry in certain areas such as Colorado. During this research it was identified that designing...
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This study applies contract bid tabulations and element-level condition records to develop element-level actions, costs for actions, transition probabilities for models of deterioration of bridge elements, and transition probabilities for improvements to elements due to actions. The study uses transition probabilities for element deterioration to compute the number of years to possible loss of safety in bridges, and to compute the number of years...
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Description
The objective of this study is to determine if the development of a standardized subset of bridge plans s feasible and cost effective. The past 30 years of successful Colorado Department of Transportation bridge design can be used as a starting point to create a standardized subset of bridge plans.