Precision Estimates of AASHTO T 180: Moisture-Density Relations of Soils Using a 4.54-kg (10-lb) Rammer and a 457-mm (18-in.) Drop

National Academies of Sciences, Engineering, and Medicine

doi:10.17226/22906

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Precision Estimates of AASHTO T 180: Moisture-Density Relations of Soils Using a 4.54-kg (10-lb) Rammer and a 457-mm (18-in.) Drop

(2010)

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TRB’s National Cooperative Highway Research Program (NCHRP) Web-Only Document 168: Precision Estimates of AASHTO T 180: Moisture-Density Relations of Soils Using a 4.54-kg (10-lb) Rammer and a 457-mm (18-in.) Drop explores an interlaboratory study and data mining of the proficiency sample program to prepare precision estimates for American Association of State Highway and Transportation Officials (AASHTO) T180 test method used for determining the relationship between the moisture content and density of soil materials.

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

Topics

Transportation and Infrastructure — Geotechnology

Suggested Citation

National Academies of Sciences, Engineering, and Medicine. 2010. Precision Estimates of AASHTO T 180: Moisture-Density Relations of Soils Using a 4.54-kg (10-lb) Rammer and a 457-mm (18-in.) Drop. Washington, DC: The National Academies Press. https://doi.org/10.17226/22906.

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Publication Info

8.5 x 11 | DOI: https://doi.org/10.17226/22906

Chapters		skim
Front Matter	i-vii
Acknowledgments	1-1
Abstract	2-2
Chapter 1 - Introduction and Research Approach	3-4
Chapter 2 - Design and Conduct of the ILS	5-9
Chapter 3 - Interlaboratory Test Results and Analysis	10-17
Chapter 4 - Analysis of Proficiency Sample Results	18-21
Chapter 5 - Precision Statement for AASHTO T 180	22-23
Chapter 6 - Conclusions and Recommendations	24-25
References	26-26
Appendix A - Instructions and Data Sheet for Interlaboratory Study	27-30
Appendix B - Maximum Density and Optimum Moisture Content of ILS Samples and Computed ASTM E691 Statistics	31-35
Appendix C - Instructions for Testing Soil Classification and Compaction of Proficiency Samples	36-38
Appendix D - Maximum Density and Moisture Content of Proficiency Samples	39-45
Appendix E - Precision Statement for AASHTO T 180	46-47

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