Hollow Bar Soil Nails: Review of Corrosion Factors and Mitigation Practice

Samtani, Naresh C.; Nowatzki, Edward A.; United States. Federal Highway Administration. Central Federal Lands Highway Division

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Hollow Bar Soil Nails: Review of Corrosion Factors and Mitigation Practice

2010-08-01
By Samtani, Naresh C. ; Nowatzki, Edward A.

[PDF-4.49 MB]

English

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Details:

Creators:

Samtani, Naresh C. ; Nowatzki, Edward A.

Samtani, Naresh C. ; Nowatzki, Edward A. Less -
Corporate Creators:

United States. Federal Highway Administration. Central Federal Lands Highway Division
Contributors:

Henwood, Justin ; Siel , Barry ; DeMarco, Matthew ; Surdahl, R. ; Anderson, Scott A. ; ... More +

Henwood, Justin ; Siel , Barry ; DeMarco, Matthew ; Surdahl, R. ; Anderson, Scott A. ; Andrew, Richard Less -
Corporate Contributors:

Yeh and Associates ; NCS Consultants, LLC

Yeh and Associates ; NCS Consultants, LLC Less -
Subject/TRT Terms:

[+]

Corrosion Corrosion Protection Hollow Bar Soil Nails Mitigation Soil Nailing Soil Stabilization Testing
Publication/ Report Number:

FHWA-CFL/TD-10-002
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report
Contracting Officer:

Henwood, Justin
Corporate Publisher:

United States. Federal Highway Administration. Central Federal Lands Highway Division
Abstract:

Hollow bar soil nails (HBSNs) have been used in the United States in earth retention systems for over 10 years. HBSNs are commonly used in place of solid bar soil nails (SBSNs) when the solid bar installation would require temporary casing of the hole. A state-of-the-practice document was prepared by FHWA in 2006 to identify (a) the various peculiarities of HBSNs in comparison with conventional SBSNs, and (b) areas of further research, evaluation and testing that would help agency personnel and design professionals understand the potential of HBSNs as a mainstream technology for permanent soil nail applications. This report concentrates on one of the specific areas of study identified in the 2006 report as related to development of corrosion mitigation guidance. This report presents the results of an industry-wide survey including agencies, designers, consultants, manufacturers and contractors related to installation of HBSNs and practices with respect to corrosion aspects. Based on the responses it was found that a lack of guidance on corrosion protection is limiting the use of HBSNs for permanent applications in corrosive environments. There are numerous contributing factors that may lead to corrosion of HBSNs. These factors are identified in this report along with a review of the current corrosion mitigation guidance. Parameters to be evaluated in formal corrosion studies are outlined. Finally, recommendations for interim corrosion mitigation guidance and further studies are provided.
Content Notes:

COTR: Justin Henwood, FHWA-CFLHD. Advisory Panel: Barry Siel, FHWA-RC; Matthew DeMarco and Roger Surdahl, FHWA-CFLHD; Scott A. Anderson, FHWA; and Richard Andrew, Yeh and Associates. This project was funded under the FHWA Federal Lands Highway Coordinated Technology Implementation Program (CTIP), and the FHWA Resource Center Geotechnical Program.
Format:

PDF
Funding:

DTFH68-07-D-00001
Collection(s):

Federal Highway Administration
Main Document Checksum:

[+]

urn:sha256:70988dcd84bed43da71c453bd71fceb7d556a7257d299ea670d2d564d3744f76
Download URL:

https://rosap.ntl.bts.gov/view/dot/42935/dot_42935_DS1.pdf
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Hollow Bar Soil Nails: Review of Corrosion Factors and Mitigation Practice

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