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Relationship of Air Voids, Lift Thickness, and Permeability in Hot-Mix Asphalt Pavements (2004)

Chapter: Chapter 2 - Objective

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Suggested Citation:"Chapter 2 - Objective." National Academies of Sciences, Engineering, and Medicine. 2004. Relationship of Air Voids, Lift Thickness, and Permeability in Hot-Mix Asphalt Pavements. Washington, DC: The National Academies Press. doi: 10.17226/13777.
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Below is the uncorrected machine-read text of this chapter, intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text of each book. Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages.

The objectives of NCHRP 9-27 were to (1) determine the minimum t/NMAS needed for desirable impermeable pave- ment density levels to be achievable, (2) evaluate the per- 2 meability characteristics of compacted samples at different thicknesses, and (3) evaluate factors affecting the relationship among in-place air voids, permeability, and lift thickness. CHAPTER 2 OBJECTIVE

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TRB’s National Cooperative Highway Research Program (NCHRP) Report 531: Relationship of Air Voids, Lift Thickness, and Permeability in Hot-Mix Asphalt Pavements provides guidance for hot-mix asphalt pavement construction designed to achieve satisfactory levels of in-place air voids and permeability. This guidance was developed from the findings of a research project that examined the relationship of air voids content to permeability and hot-mix asphalt lift thickness. The full finding of the research were published as NCHRP Web Document 68.

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