Thin Asphalt Concrete Overlays (2014) / Chapter Skim
Currently Skimming:
Pages 10-15
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 10... ...
10 chapter three DESIGN AND CONSTRUCTION OF THIN OVERLAYS Materials, mix design requirements, and construction procedures may have a significant effect on the longevity of thin overlays. Agency specification requirements and construction practices provided through the questionnaire and survey responses were used to identify some of the practices considered to be most useful for successful construction of thin overlays.
|
From page 11... ...
11 In the past, some agencies have been reluctant to use RAP, particularly in surface mixes. However, the economic advantages for doing so are clear.
|
From page 12... ...
12 150,000 tons of asphalt mix per year, a contractor could save approximately $75,000 annually if sheltered stockpiles reduced moisture content just 1% (Frank 2013)
|
From page 13... ...
13 CONSTRUCTION Surface Preparation For long-term service life with thin overlays, it is essential to resurface a candidate project that has a stable foundation with high severity distresses. Any areas of poor drainage need to be addressed before applying the overlay.
|
From page 14... ...
14 agencies have some requirement in their specifications to address this issue, and many agencies even require a materials transfer vehicle (MTV) to be used for this specific purpose.
|
From page 15... ...
15 Because smoothness is an acceptance parameter for many responding agencies, milling, leveling, or both may be needed to help meet the requirements when thin overlays are specified. As a general rule, only 40% to 60% improvement in ride quality can be expected with a single layer of asphalt mix (Newcomb 2009)
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.