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Outcomes of the RILEM round robin on degree of reaction of slag and fly ash in blended cements

(2017) MATERIALS AND STRUCTURES. 50(2). p.1-15
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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%.
Keywords
C-S-H, PORTLAND-CEMENT, SEM-EDS, QUANTIFICATION, HYDRATION, PASTES, PHASE, Supplementary cementitious materials, Degree of reaction, Selective, dissolution, Thermogravimetry, X-ray powder diffraction with Rietveld, refinement, Electron microscopy image analysis

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Chicago
Durdzinski, Pawel T., Mohsen Ben Haha, Susan A. Bernal, Nele De Belie, Elke Gruyaert, Barbara Lothenbach, Esperanza Menendez Mendez, et al. 2017. “Outcomes of the RILEM Round Robin on Degree of Reaction of Slag and Fly Ash in Blended Cements.” Materials and Structures 50 (2): 1–15.
APA
Durdzinski, P. T., Ben Haha, M., Bernal, S. A., De Belie, N., Gruyaert, E., Lothenbach, B., Menendez Mendez, E., et al. (2017). Outcomes of the RILEM round robin on degree of reaction of slag and fly ash in blended cements. MATERIALS AND STRUCTURES, 50(2), 1–15.
Vancouver
1.
Durdzinski PT, Ben Haha M, Bernal SA, De Belie N, Gruyaert E, Lothenbach B, et al. Outcomes of the RILEM round robin on degree of reaction of slag and fly ash in blended cements. MATERIALS AND STRUCTURES. Dordrecht: Springer; 2017;50(2):1–15.
MLA
Durdzinski, Pawel T., Mohsen Ben Haha, Susan A. Bernal, et al. “Outcomes of the RILEM Round Robin on Degree of Reaction of Slag and Fly Ash in Blended Cements.” MATERIALS AND STRUCTURES 50.2 (2017): 1–15. Print.
@article{8557511,
  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\%.},
  articleno    = {135},
  author       = {Durdzinski, Pawel T. and Ben Haha, Mohsen and Bernal, Susan A. and De Belie, Nele and Gruyaert, Elke and Lothenbach, Barbara and Menendez Mendez, Esperanza and Provis, John L. and Scholer, Axel and Stabler, Christopher and Tan, Zhijun and Villagran Zaccardi, Yury and Vollpracht, Anya and Winnefeld, Frank and Zajac, Maciej and Scrivener, Karen L.},
  issn         = {1359-5997},
  journal      = {MATERIALS AND STRUCTURES},
  keyword      = {C-S-H,PORTLAND-CEMENT,SEM-EDS,QUANTIFICATION,HYDRATION,PASTES,PHASE,Supplementary cementitious materials,Degree of reaction,Selective,dissolution,Thermogravimetry,X-ray powder diffraction with Rietveld,refinement,Electron microscopy image analysis},
  language     = {eng},
  number       = {2},
  pages        = {135:1--135:15},
  publisher    = {Springer},
  title        = {Outcomes of the RILEM round robin on degree of reaction of slag and fly ash in blended cements},
  url          = {http://dx.doi.org/10.1617/s11527-017-1002-1},
  volume       = {50},
  year         = {2017},
}

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