TRB Pubsindex
Text Size:
x

« Prev Next »

Return to Results | New Search

Bookmark and Share

Title:

Investigation into Effectiveness of Selected Supplementary Cementing Materials for Mitigating Alkali-Silica Reaction in Presence of Potassium Acetate Deicer

Accession Number:

01024658

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

Recent studies on the effect of certain alkali-acetate and alkali-formate based airfield deicers on durability of concrete have strongly suggested that these deicers are capable of triggering deleterious levels of expansion due to Alkali-Silica Reaction (ASR) in concretes containing marginal aggregates. Based on these findings, an investigation into the effectiveness of supplementary cementing materials (SCMs) and lithium compounds in mitigating the ASR induced by the deicers was initiated. This paper presents the results and analysis from a research study conducted to evaluate the effectiveness of selected mitigation measures (fly ash and slag) for reducing the potential of alkali-silica reactivity in presence of potassium acetate based deicer. Three different fly ashes with substantially different lime contents – low-lime fly ash (Class F), intermediate-lime fly ash (Class F), and high-lime fly ash (Class C), and a Grade 120 slag were evaluated. Results from these studies indicate that the lime content of the fly ash plays an important role in the observed mitigation. In general, low-lime and intermediate-lime fly ashes at 25% replacement of cement appear to provide adequate mitigation with three out of the four aggregates evaluated. However, high-lime fly ash at a 25% cement replacement level, and slag at a 40% cement replacement level, did not provide any significant mitigation with any of the aggregates evaluated.

Monograph Accession #:

01020180

Report/Paper Numbers:

06-3010

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Rangaraju, Prasada Rao
Desai, Jigar

Pagination:

20p

Publication Date:

2006

Conference:

Transportation Research Board 85th Annual Meeting

Location: Washington DC, United States
Date: 2006-1-22 to 2006-1-26
Sponsors: Transportation Research Board

Media Type:

CD-ROM

Features:

Figures (9) ; References (22) ; Tables (1)

Subject Areas:

Aviation; Design; Geotechnology; Highways; Maintenance and Preservation; Pavements; Terminals and Facilities; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I62: Winter Maintenance

Source Data:

Transportation Research Board Annual Meeting 2006 Paper #06-3010

Files:

TRIS, TRB

Created Date:

Mar 3 2006 11:11AM