In Situ Determination of Density Profiles in Complex Strata Using the Nuclear Density Cone Penetrometer
Joint Authors
Zhou, Haizuo
Lei, Huayang
Jia, Rui
Zhang, Wenjun
Source
Mathematical Problems in Engineering
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-06-18
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
The nuclear density cone penetrometer (ND-CP) is an in situ testing device that can provide continuous data on soil density, but it measures the composite density (ρc) of the soil within a spheroid centered at the midpoint between the gamma ray source and the detector.
A theoretical model for predicting ρc of the ND-CP is proposed, and equations for calculating ρc are derived when the ND-CP penetrates into strata with different functions of density distributions.
The calculated ρc profiles provide a good fit to the laboratory-measured ρc profiles by the ND-CP, indicating that the proposed theoretical model can be used to calculate the ρc within the spheroid.
The comparisons of the density (ρ) and ρc values show that the ρc profiles are considerably different from the actual ρ profiles at the boundaries of each stratum where density changes suddenly.
Therefore, a method for deducing the actual ρ profiles from the measured ρc profiles in complex strata is proposed, and this method is used to determine the actual ρ profiles from the ND-CP measured ρc profiles in the field.
The research results would be beneficial for the in situ determination of the density profile in complex strata using the ND-CP.
American Psychological Association (APA)
Jia, Rui& Lei, Huayang& Zhang, Wenjun& Zhou, Haizuo. 2019. In Situ Determination of Density Profiles in Complex Strata Using the Nuclear Density Cone Penetrometer. Mathematical Problems in Engineering،Vol. 2019, no. 2019, pp.1-14.
https://search.emarefa.net/detail/BIM-1196219
Modern Language Association (MLA)
Jia, Rui…[et al.]. In Situ Determination of Density Profiles in Complex Strata Using the Nuclear Density Cone Penetrometer. Mathematical Problems in Engineering No. 2019 (2019), pp.1-14.
https://search.emarefa.net/detail/BIM-1196219
American Medical Association (AMA)
Jia, Rui& Lei, Huayang& Zhang, Wenjun& Zhou, Haizuo. In Situ Determination of Density Profiles in Complex Strata Using the Nuclear Density Cone Penetrometer. Mathematical Problems in Engineering. 2019. Vol. 2019, no. 2019, pp.1-14.
https://search.emarefa.net/detail/BIM-1196219
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1196219