Soil Air Voids Method for Compaction Control : Project Summary Report 2005
Soil Air Voids Method for Compaction Control : Project Summary Report 2005
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projects, particularly if the inspector is not highly trained and experienced.
Based on the large amount of data reviewed in this study, it was determinea that the line connecting optimum compaction values falls approximately midway between the zero air voids ^ line and the 10% air voids c line, for most materials. q However, there are ^ exceptions. For example, Q the line of optimums for some materials (A-7 soils in particular) may fall to the left of the 10% air voids line. This indicates tha...t some A-7 materials may not be compatible with the air voids method because of the weak correlation between densities achieved using the Proctor impact compaction test and the corresponding air voids content. In addition, some materials may pass the air voids test but fail the conventional Proctor criteria. The area identified as the problematic region in Figure 2 is an example of this condition.
Using test results from 20 highway construction projects, it was aetermined that over 50% of the soils tested in these projects would have a density less than 95% of the standard Proctor maximum dry density if they had been compacted to an air voids content of 1 0%.
What to read after Soil Air Voids Method for Compaction Control : Project Summary Report 2005?
You can find similar books in the "Read Also" column, or choose other free books by Montana.Dept. of Transportation.Research Programs to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
projects, particularly if the inspector is not highly trained and experienced.
Based on the large amount of data reviewed in this study, it was determinea that the line connecting optimum compaction values falls approximately midway between the zero air voids ^ line and the 10% air voids c line, for most materials. q However, there are ^ exceptions. For example, Q the line of optimums for some materials (A-7 soils in particular) may fall to the left of the 10% air voids line. This indicates tha...t some A-7 materials may not be compatible with the air voids method because of the weak correlation between densities achieved using the Proctor impact compaction test and the corresponding air voids content. In addition, some materials may pass the air voids test but fail the conventional Proctor criteria. The area identified as the problematic region in Figure 2 is an example of this condition.
Using test results from 20 highway construction projects, it was aetermined that over 50% of the soils tested in these projects would have a density less than 95% of the standard Proctor maximum dry density if they had been compacted to an air voids content of 1 0%.
What to read after Soil Air Voids Method for Compaction Control : Project Summary Report 2005?
You can find similar books in the "Read Also" column, or choose other free books by Montana.Dept. of Transportation.Research Programs to read onlineMoreLess
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