Evaluation of laboratory test methods for assessing the alkali-reactivity potential of aggregates by field site tests

Field site tests were carried out to assess the reliability of developed by RILEM and some regional evaluate alkali-reactivity potential aggregates (eight included). One hundred concrete cubes made with 13 different European aggregate combinations stored on eight field sites compare their expansions laboratory test results. All highly reactive caused significant expansion within first six years all from Norway Spain. These non-reactive correctly identified tests. Concrete moderately expanded very slowly mainly in outdoor exposure warm climate conditions. The method AAR-4.1 (60°C accelerated prism test) Norwegian at 38°C seem be best suited identity reactivity combinations.