Assessing Chloride Ingress Through Construction Joints in UHPC Overlays [research note]

Saladi, Naveen; Helsel, Michelle; Haber, Zachary B.; Spragg, Robert P.

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Assessing Chloride Ingress Through Construction Joints in UHPC Overlays [research note]

2022-06-01
By Saladi, Naveen ; Helsel, Michelle ; Haber, Zachary B.

File Language:

English

Details

Creators:

Saladi, Naveen ; Helsel, Michelle ; Haber, Zachary B. ; Spragg, Robert P.
Corporate Creators:

United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure Research and Development
Contributors:

Graybeal, Benjamin A.
Corporate Contributors:

Turner-Fairbank Highway Research Center
Subject/TRT Terms:
Publication/ Report Number:

FHWA-HRT-22-078
Resource Type:

Brief
Geographical Coverage:

United States
Corporate Publisher:

United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure Research and Development
Abstract:

Ultra-high performance concrete (UHPC) overlays are beginning to be recognized as a viable solution for bridge deck preservation. To accommodate construction sequencing during installation, vertical cold joints between UHPC pours are often unavoidable. Furthermore, the formwork and detailing used at these cold-joint locations are not yet standardized. Ingress of water and chlorides through these cold joints can affect the durability of the overlay. This study aimed to assess chloride ingress through construction joints in UHPC overlays. Four different formwork details were investigated, replicating techniques that might be employed in the field. A sodium chloride (NaCl) solution was ponded over specimens for 1 year. Measured chloride profiles indicated that in all cases there was no detectable chloride penetration beyond a depth of 0.2 inches.
Format:

PDF
Funding:

DTFH6117D00017
Download URL:

https://rosap.ntl.bts.gov/view/dot/62623/dot_62623_DS1.pdf
File Type:

[PDF - 1.03 MB]
Collection(s):

Federal Highway Administration
Main Document Checksum:

urn:sha-512:7e9fc2d1444dff8c8d4f99affc1f11b98e026e5f252db3c631b08b0d1f3b72cc02546e9df30ee6270a715eb589d1decc40218ae85702ab4136b21c5834aab360

File Language:

English

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