Titlebook: RILEM Recommendations for the Prevention of Damage by Alkali-Aggregate Reactions in New Concrete Str; State-of-the-Art Rep Philip J. Nixon,

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,RILEM Recommended Test Method: AAR-5—Detection of Potential Alkali-Reactivity—Rapid Preliminary ScrThe accelerated mortar-bar test (AAR-2) has been widely and successfully used as a screening test to identify aggregates that are potentially alkali-reactive. However there are some aggregates that, though alkali-reactive according to both field experience and concrete prism test results, do not show as such in the mortar-bar test.

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,RILEM Recommended Specification: AAR-7.2—International Specification to Minimise Damage from AlkaliCarbonate rocks containing finely divided inclusions of silica. These may be termed siliceous limestones and can be very reactive towards alkalis. Because of the finely disseminated nature of the silica it can be difficult to detect by conventional optical petrography.

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rstanding of chemical reactions. The results of electron density analysis are used in a variety of applied fields, such as pharmaceutical drug discovery and biotechnology. If the functional form of a molecular electron density is known, then various molecular properties affecting reactivity can be determined 978-1-4020-0413-1978-0-306-46943-5