Piezocone Penetration Testing Device

Song, Chung R.; Bekele, Binyam M; Sawyer, Brian; University of Nebraska--Lincoln. Dept. of Civil Engineering

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Piezocone Penetration Testing Device

2017-01-03
By Song, Chung R. ; Bekele, Binyam M ; Sawyer, Brian

[PDF-3.94 MB]

English

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Creators:

Song, Chung R. ; Bekele, Binyam M ; Sawyer, Brian

Song, Chung R. ; Bekele, Binyam M ; Sawyer, Brian Less -
Corporate Creators:

University of Nebraska--Lincoln. Dept. of Civil Engineering
Corporate Contributors:

Nebraska Transportation Center ; Mid-America Transportation Center ; United States. Federal Highway Administration ; Nebraska. Department of Transportation

Nebraska Transportation Center ; Mid-America Transportation Center ; United States. Federal Highway Administration ; Nebraska. Department of Transportation Less -
Subject/TRT Terms:

[+]

Engineering Geology Hydraulic Conductivity Overconsolidated Soil Overconsolidation PCPT Permeability Coefficient Piezocone Indices Piezometers Soils Testing Soil Tests Testing Equipment
Publication/ Report Number:

M063
Resource Type:

Tech Report
Geographical Coverage:

Canada ; United States ; South Korea

Canada ; United States ; South Korea Less -
Corporate Publisher:

Nebraska Transportation Center
NTL Classification:

NTL-HIGHWAY/ROAD TRANSPORTATION-Soils and Geology
Abstract:

Hydraulic characteristics of soils can be estimated from piezocone penetration test (called PCPT hereinafter) by performing dissipation test or on-the-fly using advanced analytical techniques. This research report presents a method for fast estimation of hydraulic conductivity of overconsolidated soils based on the piezocone penetration test. The method relies on an existing relationship developed for the determination of hydraulic conductivity of normally consolidated soils on-the-fly. The present research revises this relationship so that it can be applied for overconsolidated soils by incorporating a proper correction equation. The revised relationship provides a pore pressure representing the hydraulic conductivity of a hypothetical “equivalent normally consolidated soil”. The revised relationship was developed with piezocone indices (Qt, Fr, and Bq) based on well documented laboratory test and PCPT data. In this regard, PCPT data from Nebraska Department of Transportation (NDOT) was used as a primary data base to determine the correction equation. Then, the proposed revised relationship was verified for other sites in the USA, Canada, and South Korea. This study showed that the proposed method provides a reasonably good prediction of hydraulic conductivity of overconsolidated soils. In addition, the method also accurately predicted the hydraulic conductivity of normally consolidated soils.
Format:

PDF
Alternate URL:

https://dot.nebraska.gov/media/11234/m063-final-report.pdf
Collection(s):

University Transportation Centers US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:721cc33166e612b5ca26cbd995147ac9ae87f2832c8cb1b1748c1a6b77aca585
Download URL:

https://rosap.ntl.bts.gov/view/dot/35678/dot_35678_DS1.pdf
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Piezocone Penetration Testing Device

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