Durdziński, PT, Ben Haha, M, Bernal, SA et al. (13 more authors) (2017) Outcomes of the RILEM round robin on degree of reaction of slag and fly ash in blended cements. Materials and Structures, 50 (2). 135. ISSN 1359-5997
Abstract
Working group 2 of the RILEM TC 238-SCM undertook a comparison of laboratories and techniques for the quantification of the degree of reaction of supplementary cementitious materials in blended cements. A common set of binary pastes of Portland cement with two slags, a calcareous and a siliceous fly ash was tested in seven laboratories. The results obtained by selective dissolution produced were quite scattered and seemed to underestimated the degree of reaction. The analysis of portlandite consumption was found to significantly underestimate the reaction unless additional data from XRD and electron microscopy was gathered to complete the corrections. Despite limited access to electron microscope among the participants and thus only a small data set being collected, this technique appeared as one of the most consistent. XRD-PONKCS gave considerable scatter, due mainly to a lack of a strict protocol and excessive overlap of slag and C–S–H signals. Overall, the study indicated that the precision of determination of the degree of reaction of SCMs in cement pastes is rather low and at best ±5%.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2017, RILEM. This is a post-peer-review, pre-copyedit version of an article published in Materials and Structures. The final authenticated version is available online at: https://doi.org/10.1617/s11527-017-1002-1. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Supplementary cementitious materials; Degree of reaction; Selective dissolution; Thermogravimetry; X-ray powder diffraction with Rietveld refinement; Electron microscopy image analysis |
Dates: |
|
Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 12 Sep 2018 13:24 |
Last Modified: | 25 Jun 2023 21:30 |
Status: | Published |
Publisher: | Springer Verlag |
Identification Number: | 10.1617/s11527-017-1002-1 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:135530 |