TY - CHAP A1 - Scholz, Yvonne A1 - Hübert, Cornelia A1 - Hünger, Klaus-Jürgen T1 - The influence of supplementary cementing materials on the dissolution of aggregates in alkaline solutions T2 - ICAAR, 15th International Conference on Alkali Aggregate Reaction, July 03-07, 2016, Sao Paulo, Brazil, abstracts N2 - Starting from expansion measurements on concrete prisms, produced with two different alkali reactive aggregates, the influence of two aluminium containing SCMs on the expansion of concrete prisms and on the solubility of the aggregates in an alkaline solution were investigated. The solubility of aggregates in an alkaline solution reflects the alkali reactivity of the corresponding aggregate. Initially, the solubility experiments with the aggregates and SCMs were made separately and then in mixtures of each aggregate and SCM. In a further step, the SCMs were stored in KOH solutions containing Ca(OH)2. The concentrations of SiO2 and Al2O3 were determined to investigate the effect of calcium on the solving processes of SCMs. The combination of concrete expansion test and dissolution experiments of two alkali reactive aggregates and two aluminium containing SCMs allows first conclusions about the influence of such SCMs on the reactivity of aggregates. KW - alkali silica reaction KW - supplementary cementing materials (SCM) KW - solubility of aggregate KW - solubility of SCM Y1 - 2016 SP - S. 43 PB - ICAAR ER -