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American Association of State and Highway Transportation Officials, 2010
Publisher: AASHTO
File Format: PDF
$34.00$68.00
Pages:13
File Size:1 file , 1.8 MB
Note:This product is unavailable in Ukraine, Russia, Belarus
This method of test is intended for determining the relationship between the moisture content and density of soils when compacted in a given mold of a given size with a 4.54-kg (10-lb) rammer dropped from a height of 457 mm (18 in.). Four alternate procedures are provided as follows:
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 (0.75-in.) sieve, when Method C or D is used. The material retained on these sieves shall be defined as oversize particles (coarse particles).
If the test specimen contains oversize particles and the test specimen is to be used for field density compaction control, corrections must be made according to AASHTO T 224 to compare the total field density with the compacted specimen. The person or agency specifying this method shall specify a minimum percentage of oversize particles below which correction for oversize particles need not be applied. If no minimum percentage is specified, correction shall be applied to samples with more than 5 percent by mass of oversize particles.
If the specified oversized maximum tolerances are exceeded, other methods of compaction control must be used.
Note—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.
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