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

Quoc Tri Phung, Lander Frederickx, Thi Nhan Nguyen, Suresh Seetharam, Eric Laloy, Jens Verbeeck, Dylan Gybels, Thomas Huys, Carlot Valgaeren

Research outputpeer-review

27 Downloads (Pure)

Abstract

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.
Original languageEnglish
Title of host publicationProceedings of PREDIS May Workshop 2021
Subtitle of host publicationDate 30.9.2021 version Final
EditorsMaria Oksa, Erika Holt
PublisherEC - European Commission
Pages1-9
Number of pages9
StatePublished - 30 Sep 2021
Event2021 - PREDIS workshop - Online
Duration: 4 May 20216 May 2021

Workshop

Workshop2021 - PREDIS workshop
Period2021-05-042021-05-06

Cite this