Practices for Unbound Aggregate Pavement Layers

National Academies of Sciences, Engineering, and Medicine

doi:10.17226/22469

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Practices for Unbound Aggregate Pavement Layers

(2013)

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TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 445: Practices for Unbound Aggregate Pavement Layers consolidates information on the state-of-the-art and state-of-the-practice of designing and constructing unbound aggregate pavement layers. The report summarizes effective practices related to material selection, design, and construction of unbound aggregate layers to potentially improve pavement performance and longevity.

Contributor(s): National Academies of Sciences, Engineering, and Medicine; Transportation Research Board; National Cooperative Highway Research Program; Erol Tutumluer

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Suggested Citation

National Academies of Sciences, Engineering, and Medicine. 2013. Practices for Unbound Aggregate Pavement Layers. Washington, DC: The National Academies Press. https://doi.org/10.17226/22469.

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Publication Info

180 pages | 8.5 x 11 | DOI: https://doi.org/10.17226/22469

Chapters		skim
Front Matter	i-ix
Summary	1-2
Chapter One - Introduction	3-8
Chapter Two - Aggregate Types and Material Selection	9-39
Chapter Three - Granular Base and Subbase Construction Practices	40-54
Chapter Four - Unbound Aggregate Base Characterization for Design	55-100
Chapter Five - Compaction, Quality Control, and Field Performance	101-118
Chapter Six - Summary of Current Practice and Effective Practices	119-124
Acronyms	125-126
Appendix A - Questionnaire	127-141
Appendix B - Respondent Information	142-143
Appendix C - Survey Responses	144-171
Appendix D - Review of Current Resilient Modulus Models	172-175
Appendix E - Review of Current Permanent Deformation Models	176-178
Appendix F - Follow-up Survey on Resilient Modulus Testing	179-181

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