Silane Chemical Protection of Bridge Decks

Smith, Mitchell D.

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Silane Chemical Protection of Bridge Decks

1986-12-01
By Smith, Mitchell D.

File Language:

English

Details

Creators:

Smith, Mitchell D.
Corporate Creators:

Oklahoma. Department of Transportation. Research & Development Division
Corporate Contributors:

United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:

Bridge Decks Corrosion Protection Field Tests Moisture Barriers Performance Reinforcing Steel Silane
Publication/ Report Number:

FHWA/OK 86(4)
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report, 1976 to 1986
Corporate Publisher:

Oklahoma. Department of Transportation
Abstract:

This report describes the performance of alkyltrialkoxysilane chemical products and their ability to protect bridge structures from moisture, chloride ingression, and corrosion of reinforcing steel. As a result of the evaluation, the following recommendations are made: (1) The application of silane should be used to protect bridge structures from moisture and chloride ingression, and corrosion of reinforcing steel. (2) The silane treatment should be used on both new and existing bridge structures in which the chloride content at the rebar depth has not exceeded 2.5 lb/cu yd, or the corrosion potentials over the bridge deck area numerically do not exceed -350 millivolts. (3) A dry concrete surface is essential for successful application. An application rate of 125 sq ft/gal for horizontal surfaces and 175 sq ft/gal for vertical surfaces is recommended. After application, and the silane has penetrated, water should be applied to assure sufficient moisture for chemical reaction between the silane and concrete. (4) The Oklahoma Department of Transportation field testing of the bridge decks selected for the silane performance evaluation should be continued through 1996 to determine the long term performance.
Format:

PDF
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:9163f6cebe7e728ecdf233a65f11141aa3c4322813160dde9973ddefdafe586f5d7b706c1d852f8e25e2f3729e49d482d94a14a7cba50ee64b4dbde01f1680f8
Download URL:

https://rosap.ntl.bts.gov/view/dot/89351/dot_89351_DS1.pdf
File Type:

[PDF - 6.82 MB ]

File Language:

English

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