TRB’s National Cooperative Highway Research Program (NCHRP) Web-Only Document 163: Precision Estimates of AASHTO T267: Determination of Organic Content in Soils by Loss on Ignition includes the results of an interlaboratory study to prepare precision estimates for the American Association of State Highway and Transportation Officials T267 test method used for the determination of organic content in soils by loss on ignition.
National Academies of Sciences, Engineering, and Medicine. 2010. Precision Estimates of AASHTO T267: Determination of Organic Content in Soils by Loss on Ignition. Washington, DC: The National Academies Press. https://doi.org/10.17226/22921.
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