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Control of compaction of cohesionless granular soils is frequently confounded by the lack of adequate test methods. These materials do not compact satisfactorily in the standard moisture-density test, ASTM Method D 698. Thus, methods of soil-compaction control based upon the standard density test, which are appropriate for cohesive-type soils, have been found to be unworkable with many cohesionless soils.
It is the assignment of Section D of Subcommittee R-3 of ASTM Committee D-18 to establish tentative ASTM methods for determining the maximum and minimum densities of granular materials. These methods will provide a means for controlling compaction of granular materials based upon either “per cent-compaction” or “relative-density” specifications.
This report presents maximum and minimum density data obtained for six granular materials by eight cooperating committee members, each using test methods of his own choice. The committee expects to select two or three methods for further check testing and ultimately to propose methods for publication as tentative ASTM standards.
ManagerChairman of Section D, Portland Cement Assn., Chicago, Ill.