Journal of the Society of Materials Science, Japan
Online ISSN : 1880-7488
Print ISSN : 0514-5163
ISSN-L : 0514-5163
Original Papers
Expansion Behavior of Prestressed Concrete Beam Deteriorated by Alkali-Silica Reaction under Long Term Exposure Test
Kazunori SASAKIShigeru MATSUMOTOYoshio HISARIKazuhiro KUZUMESyo KANAUMIToyoaki MIYAGAWA
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2008 Volume 57 Issue 10 Pages 973-980

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Abstract
This research showed the expansion behavior of prestressed concrete beam deteriorated by alkali-silica reaction under long term exposure test by the follow-up survey over about four years. The main results are as follows. Expansion of the cracks became remarkable at the time of the high temperature of summer, and it was almost changeless in winter. Compared with the strain of concrete surface of upper edge of axial direction, strain of vertical direction and upper edge of right-angle direction was large. The strain of the stirrups exceeded a yield strain greatly. The compressive strength of the test piece of concrete deteriorated to about 80% of the maximum, and the elastic modulus deteriorated to about 30% of the maximum.
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© 2008 by The Society of Materials Science, Japan
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