<p><p><strong>Reference(s):</strong></p><p><em>Crockford et al. (1993)<br>Grogan (1994)</em></p><p><strong>Method Summary</strong></p><p>Proper compaction is an important part of fiber-reinforced soils. The optimum moisture content and the maximum dry density of the mix are determined using the standard or modified Proctor tests. The moisture content and the density during the construction are monitored. Sand cone test or nuclear gage measurement are employed to verify the moisture content and the dry density. Roller compaction is continued until the desired density is achieved (Crockford et al. 1993). Field density tests include Sand Cone Test (ASTM D1556) and Nuclear Density Gauge Test.</p><p><strong> </strong><strong>Accuracy and Precision</strong></p><p>Field density tests are accurate and precise procedures.</p><p><strong> </strong><strong>Adequacy of Coverage</strong></p><p>Frequency of testing should be related to the uniformity of ground conditions and the desired level of confidence.</p><p><strong> </strong><strong>Implementation Requirements </strong></p><p>Simple sand cone equipment may be used. Experience and special equipment is necessary for nuclear gage measurements.</p></p>