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https://hdl.handle.net/1822/81935
Título: | Report of RILEM TC 281-CCC: outcomes of a round robin on the resistance to accelerated carbonation of Portland, Portland-fly ash and blast-furnace blended cements |
Autor(es): | Vanoutrive, Hanne Van den Heede, Philip Alderete, Natalia Andrade, Carmen Bansal, Tushar Camões, Aires Cizer, Özlem De Belie, Nele Ducman, Vilma Etxeberria, Miren Frederickx, Lander Grengg, Cyrill Ignjatovic, Ivan Ling, Tung-Chai Liu, Zhiyuan Garcia-Lodeiro, Inés Lothenbach, Barbara Martinez, César Medina Sanchez-Montero, Javier Olonade, Kolawole Palomo, Angel Phung, Quoc Tri Rebolledo, Nuria Sakoparnig, Marlene Sideris, Kosmas Thiel, Charlotte Wu, Bei Zajac, Maciej Zhao, Zengfeng Gruyaert, Elke |
Editor(es): | Visalakshi, Talakokula Vollpracht, Anya von Greve-Dierfeld, Stefanie Wei, Jinxin |
Palavras-chave: | Carbonation Ground granulated blast-furnace slag Fly ash CO2 concentration Curing Cement CO concentration 2 |
Data: | 2022 |
Editora: | Springer |
Revista: | Materials and Structures |
Citação: | Vanoutrive, H., Van den Heede, P., Alderete, N. et al. Report of RILEM TC 281-CCC: outcomes of a round robin on the resistance to accelerated carbonation of Portland, Portland-fly ash and blast-furnace blended cements. Mater Struct 55, 99 (2022). https://doi.org/10.1617/s11527-022-01927-7 |
Resumo(s): | Many (inter)national standards exist to evaluate the resistance of mortar and concrete to carbonation. When a carbonation coefficient is used for performance comparison of mixtures or service life prediction, the applied boundary conditions during curing, preconditioning and carbonation play a crucial role, specifically when using latent hydraulic or pozzolanic supplementary cementitious materials (SCMs). An extensive interlaboratory test (ILT) with twenty two participating laboratories was set up in the framework of RILEM TC 281-CCC 'Carbonation of Concrete with SCMs'. The carbonation depths and coefficients determined by following several (inter)national standards for three cement types (CEM I, CEM II/B-V, CEM III/B) both on mortar and concrete scale were statistically compared. The outcomes of this study showed that the carbonation rate based on the carbonation depths after 91 days exposure, compared to 56 days or less exposure duration, best approximates the slope of the linear regression and those 91 days carbonation depths can therefore be considered as a good estimate of the potential resistance to carbonation. All standards evaluated in this study ranked the three cement types in the same order of carbonation resistance. Unfortunately, large variations within and between laboratories complicate to draw clear conclusions regarding the effect of sample pre-conditioning and carbonation exposure conditions on the carbonation performance of the specimens tested. Nevertheless, it was identified that fresh and hardened state properties alone cannot be used to infer carbonation resistance of the mortars or concretes tested. It was also found that sealed curing results in larger carbonation depths compared to water curing. However, when water curing was reduced from 28 to 3 or 7 days, higher carbonation depths compared to sealed curing were observed. This increase is more pronounced for CEM I compared to CEM III mixes. The variation between laboratories is larger than the potential effect of raising the CO2 concentration from 1 to 4%. Finally, concrete, for which the aggregate-to-cement factor was increased by 1.79 in comparison with mortar, had a carbonation coefficient 1.18 times the one of mortar. |
Tipo: | Artigo |
Descrição: | This report has been prepared by members of the working groups 1 and 2 within a framework of RILEM TC 281-CCC “Carbonation of concrete with supplementary cementitious materials” and further reviewed and approved by all members of the RILEM TC 281-CCC. |
URI: | https://hdl.handle.net/1822/81935 |
DOI: | 10.1617/s11527-022-01927-7 |
ISSN: | 1359-5997 |
e-ISSN: | 1871-6873 |
Versão da editora: | https://rdcu.be/c3hOY |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | C-TAC - Artigos em Revistas Internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Vanoutrive2022_Article_ReportOfRILEMTC281-CCCOutcomes.pdf Acesso restrito! | 1,41 MB | Adobe PDF | Ver/Abrir |