Relation of expansion due to alkali silica reaction to the degree of reaction measured by SEM image analysis

Scanning Electron Microscopy Image Analysis (SEM-IA) was used to quantify the degree of alkali silica reaction in affected microbars, mortar and concrete prisms. It was found that the degree of reaction gave a unique correlation with the macroscopic expansion for three different aggregates, stored at three temperatures and with two levels of alkali. The relationships found for the concretes and the mortars overlap when normalised by the aggregate content. This relationship seems to be linear up to a critical reaction degree which coincides with crack initiation within the reactive aggregates. © 2007 Elsevier Ltd. All rights reserved.


Published in:
Cement and Concrete Research, 37, 8, 1206-1214
Year:
2007
ISSN:
00088846
Note:
Cited By (since 1996): 17
Export Date: 1 June 2011
Source: Scopus
Other identifiers:
Scopus: 2-s2.0-34547644310
Laboratories:




 Record created 2011-06-06, last modified 2018-03-17


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