標準號：ASTM D2940-1998
中文標準名稱：公路或機場底層或次底層用分級集料材料
英文標準名稱：Standard Specification for Graded Aggregate Material For Bases or Subbases for Highways or Airports
標準類型：Q20
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：Q20
國際標準分類號：93.080.10 (Road construction); 93.120 (Constructio
適用范圍： Note 1-The engineer is cautioned to provide appropriate construction specifications to ensure compaction to an extent that further densification from traffic loadings on the completed pavement will be insignificant. The method suggested is to require compaction on a firm foundation of a short control strip of the material at a suitable moisture content, by means of vibratory or other proven effective rollers or tampers, until no further increase in density results. Compaction requirements should ensure that an average density of certain appropriate percentages of the control strip maximum density be achieved on the balance of the job; for base courses, 98% is suggested as the minimum average requirement.