ASTM D2940-1998 公路或机场底层或次底层用分级集料材料

标准号：ASTM D2940-1998
中文标准名称：公路或机场底层或次底层用分级集料材料
英文标准名称：Standard Specification for Graded Aggregate Material For Bases or Subbases for Highways or Airports
标准类型：Q20
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：Q20
国际标准分类号：93.080.10 (Road construction); 93.120 (Constructio
适用范围： 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.