Application of DCP to Evaluate Subgrade Compaction Quality

Ping Xu; Ying Chun Cai

doi:10.4028/www.scientific.net/KEM.474-476.2125

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 474-476Application of DCP to Evaluate Subgrade Compaction...

Application of DCP to Evaluate Subgrade Compaction Quality

Abstract:

Although DCP (Dynamic Cone Penetrometer) cannot directly reflect the subgrade compaction degree, experience shows that the smaller DCP penetration rate is and the better the compaction quality will be. Tai-Ao highway in China is selected as an engineering example, some relationship curves are obtained by in-situ tests, such as total hammering number of DCP and penetration depth, and penetration ratio and penetration depth, and these curves reveal that DCP can reflect the compaction quality in some degree. And then a lot of FWD and DCP are in-situ tested on the same points of filled and excavated subgrade, and the back-calculated CBR and FWD (1 ton, 3 ton and 5 ton) are analyzed and they have better correlation, and DCP is approved to be a better manner to test and evaluate the compaction quality of highway subgrade.

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Periodical:

Key Engineering Materials (Volumes 474-476)

Pages:

2125-2128

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.474-476.2125

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Online since:

April 2011

Authors:

Ping Xu, Ying Chun Cai

Keywords:

Bearing Capacity, CBR, Compaction Quality, FWD, Subgrade

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References

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