Passive Acoustic Emission for Quantitative Evaluation of Freeze Thaw and Alkali Aggregate Reaction in Concretesby Michael A. Taylor, Univ of California, Davis, United States,
Abstract: Several experiments are reported in which the progression of freeze thaw (FT), alkali-aggregate reaction (AAR), and internal cracking caused by mechanical loading were monitored using the passive acoustic emission technique (PAET). The results show that the method can provide several advantages over other methods, including the capacity to produce quantitative evaluation of the progression of these actions (which are frequently invisible to the naked eye).
Subject Headings: Aggregates | Emissions | Concrete | Freeze and thaw | Acoustic techniques | Alkalinity | Cracking | Material tests
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