An integrated approach to assess the alkali silica reaction of cemented wastes

This paper summarizes the overall strategy to assess the alkali silica reaction (ASR) in the context of cemented wastes. This encompasses deployment of laboratory ASR tests and industrial scale drum tests at both reference and accelerated conditions, both of which provide data for future deployment of multiphysics based model for ASR, supplemented by computationally efficient meta model. In particular, this paper discusses preliminary laboratory ASR tests that are conducted to examine the efficacy of various instruments such under penalizing conditions, for example, the performance of pH sensors, strain gauges, thermocouples, pressure transducers, etc. So far expansion test results have become available, which shows a relative expansion under accelerated conditions, which results in a slight decrease in compressive and flexural strength of samples using reactive aggregate. For the corresponding tests, piezo sensor results are currently being examined, which offers a glimpse of crack formation.