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Title:

Evaluation of Use of Lithium Nitrate in Controlling Alkali-Silica Reactivity in Existing Concrete Pavement
Cover of Evaluation of Use of Lithium Nitrate in Controlling Alkali-Silica Reactivity in Existing Concrete Pavement

Accession Number:

01011205

Record Type:

Component

Availability:

Transportation Research Board Business Office

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Washington, DC 20001 United States
Order URL: http://www.trb.org/Main/Public/Blurbs/156719.aspx

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Order URL: http://worldcat.org/isbn/0309093872

Abstract:

The study presents the findings from a 2-year field trial in which lithium nitrate was applied at a rate of 0.006 gal/sq ft twice a year on an existing concrete pavement in Norfolk, Nebraska, in an attempt to arrest ongoing alkali-silica reaction (ASR) distress. Various destructive and nondestructive means were used to measure the effectiveness of the treatments. Concrete cylinders were cored for petrographic examination and split tension testing. Powder samples were taken to determine the lithium content. Nondestructive evaluations used crack mapping, a Schmidt hammer, a velocity meter, and an impact echo apparatus. The amount of lithium that penetrated into the pavement by gravity soaking has been limited. The results to date have not shown a definitive benefit of application of the lithium material in controlling or mitigating the ASR process; presumably, the pavement has not reached the state of deterioration optimal for lithium penetration. The feasibility and effectiveness of other application techniques on hardened concrete, such as electrolysis, surface pressurization, and vacuum impregnation, should be investigated for comparison with the feasibility and effectiveness of gravity soaking.

Monograph Title:

Concrete Materials 2005

Monograph Accession #:

01011203

Language:

English

Authors:

Tuan, Christopher Y
Kelly, Michael T
Sun, Haosu
Buss, Mark E

Pagination:

pp 34-44

Publication Date:

2005

Serial:

Transportation Research Record: Journal of the Transportation Research Board

Issue Number: 1914
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309093872

Media Type:

Print

Features:

Figures (10) ; References (11) ; Tables (3)

Uncontrolled Terms:

Lithium content; Lithium nitrate

Geographic Terms:

Norfolk (Nebraska)

Subject Areas:

Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I32: Concrete

Files:

TRIS, TRB, ATRI

Created Date:

Dec 16 2005 1:19PM

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