Hartmut, GydeGydeHartmutSchmidt-Döhl, FrankFrankSchmidt-Döhl2024-11-182024-11-182024-05RILEM Bookseries 49: 275-282https://hdl.handle.net/11420/51943The alkali-silica reaction (ASR) still causes considerable damage to concrete structures and furthermore the most beneficial method to avoid ASR is to test the aggregate for reactivity. There are internationally different but similar test methods for a reliable assessment of the damage potential of an aggregate, but these methods require specially manufactured specimens and test durations up to several months. Furthermore, a method for the short-term characterization of the aggregate is still missing. Therefore, the Institute of Materials, Physics and Chemistry of Buildings at Hamburg University of Technology (TUHH) is working on the development of a new fast test method. The idea of this new test method is an accelerated dissolution experiment. However, in this approach the time dependent change of chemical parameters due to the dissolution process in hot basic solution with an excess of alkalis is used to estimate the reactivity. The pH, the electrical conductivity, and the redox potential are recorded as a function of time. The assumption is that the different alkali reactivity of the aggregates is significantly reflected in the chemical parameters, which should make a categorization regarding the alkali reactivity possible.enASRASR testing methoddissolution experimentselectrical conductivityreaction kineticsTechnology::690: Building, ConstructionConference Paper10.1007/978-3-031-59419-9_32Conference Paper