Journal Published Online: 01 June 2000
Volume 22, Issue 1

Influence of Silica Fume on the Stresses Generated by Alkali-Silica Reaction

CODEN: CCAGDP

Abstract

Present test methods for determining the suitability of a given combination of cement and aggregates with respect to the potential for alkali-silica reaction (ASR) are based on the measurement of the expansion of the concrete/mortar under prescribed conditions. The scope of this study was to determine the influence of the addition of silica fume as a cement replacement on the stresses generated by the specimen, a parameter that could be useful for the engineer. Cylindrical specimens were placed in a frame equipped with a load cell that fixed the axial strain at approximately zero and measured the axial stress generated over time. A replacement of cement by silica fume at a dosage of 15% by mass for two different w/c ratios led to a significant decrease of the measured stress. SEM observations helped to provide a tentative explanation for the stress and expansion reduction mechanisms with the addition of silica fume.

Author Information

Ferraris, C
National Institute of Standards and Technology, Gaithersburg, MD
Garboczi, E
National Institute of Standards and Technology, Gaithersburg, MD
Stutzman, P
National Institute of Standards and Technology, Gaithersburg, MD
Winpigler, J
National Institute of Standards and Technology, Gaithersburg, MD
Clifton, J
Pages: 6
Price: $25.00
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Stock #: CCA10466J
ISSN: 0149-6123
DOI: 10.1520/CCA10466J