Resumen de Nuevo método para la determinación de los productos de la reacción Alcali-Sílice en hormigones

I. Fontao Orosa, Nicanor Prendes Rubiera, Ángel Leiro, B. Mateo

• This technique to identify Alcali-Silica Reaction (ASR) products in concrete is based on the identification od ASR product by staining them with uranyl ions, wich have a characteristic fluorescence under short-wave ultraviolet light. The AAR products are presents as silica gel with adsorted sodium ions. The uranyl ions can replace, by ionic exchange, the sodium ions on silica gel, and under-ultraviolet light by fluorescence of uranyl ions identify the aeras where silica gel is present.