<p><p><strong>References:</strong></p><p><strong>Method Summary</strong></p><p>Standard density testing using a nuclear density gauge, sand cone, balloon density gauge, or other method should be used to verify compaction of lightweight fill materials that are composed of granular particles and have lower void ratios, such as fly ash and slag aggregate. Field density should be compared with laboratory proctor tests to determine relative compaction of fill material. During density testing, moisture content should also be evaluated and compared with required values.</p><p><strong> </strong><strong>Accuracy and Precision</strong></p><p>This method is accurate and precise when used on appropriate lightweight fill materials.</p><p><strong>Adequacy of Coverage</strong></p><p>Density testing is relatively quick and inexpensive so many tests can be conducted during construction. However, only a very small percentage of the total volume of compacted material is actually tested.</p><p><strong> </strong><strong>Implementation Requirements </strong></p><p>Density testing is common in geotechnical applications and uses readily available equipment.</p><p><strong> </strong><strong>General Comments</strong></p><p>When applicable to the lightweight fill material, verification of moisture and density is important to ensure projects are properly constructed and will perform as expected.</p></p>