AASHTO - American Association of State Highway and Transportation Officials
Latest
T 99-2017
Scope
These methods of test are intended for determining the relation between the moisture content and density of soils compacted in a mold of a given size with a 2.5-kg (5.5-lb) rammer dropped from a height of 305 mm (12 in.). Four alternate procedures are provided as follows: Method A??A 101.60-mm (4-in.) mold: Soil material passing a 4.75-mm (No. 4) sieve (see Sections 4 and 5); Method B??A 152.40-mm (6-in.) mold: Soil material passing a 4.75-mm (No. 4) sieve (see Sections 6 and 7); Method C??A 101.60-mm (4-in.) mold: Soil material passing a 19.0-mm (3/4-in.) sieve (see Sections 8 and 9); or Method D??A 152.40-mm (6-in.) mold: Soil material passing a 19.0-mm (3/4-in.) sieve (see Sections 10 and 11). The method to be used should be indicated in the specifications for the material being tested. If no method is specified@ the provisions of Method A shall govern. This test method applies to soil mixtures that have 40 percent or less retained on the 4.75 mm- (No. 4) sieve@ when Method A or B is used and 30 percent or less retained on the 19.0-mm (3/4-in.) sieve@ when Method C or D is used. Material retained on these sieves shall be defined as oversized particles (coarse particles). If the test specimen contains oversized particles@ dry density and moisture corrections must be made in accordance with Annex A1. The person or agency specifying this method may specify a minimum percentage of oversized particles above which a correction must be applied. If no minimum percentage is specified@ correction for the oversized particles shall be applied to material containing more than 5 percent by weight of oversized particles. If the specified oversized particle maximum percentage is exceeded@ other methods of compaction control must be used. Note 1??One method for the design and control of the compaction of such soils is to use a test fill to determine the required degree of compaction and a method to obtain that compaction. Then use a method specification to control the compaction by specifying the type and size of compaction equipment@ the lift thickness@ and the number of passes. The following applies to all specified limits in this standard: For the purposes of determining conformance with these specifications@ an observed value or a calculated value shall be rounded off ??to the nearest unit?? in the last right-hand place of figures used in expressing the limiting value@ in accordance with ASTM E29. The values stated in SI units are to be regarded as the standard.
T 99-2017 history
2017T 99-2017 Standard Method of Test for Moisture–Density Relations of Soils Using a 2.5-kg (5.5-lb) Rammer and a 305-mm (12-in.) Drop
2015T 99-2015 Standard Method of Test for Moisture-Density Relations of Soils Using a 2.5-kg (5.5-lb) Rammer and a 305-mm (12-in.) Drop
2010T 99-2010 Standard Method of Test for Moisture-Density Relations of Soils Using a 2.5-kg (5.5-lb) Rammer and a 305-mm (12-in.) Drop
2001T 99-2001 Standard Method of Test for Moisture-Density Relations of Soils Using a 2.5-kg (5.5-lb) Rammer and a 305-mm (12-in.) Drop