1 Correction to: Materials and Structures (2020) 53:44 https://doi.org/10.1617/s11527-020-01478-9

The article “The impact of calcite impurities in clays containing kaolinite on their reactivity in cement after calcination”, written by Franco Zunino, Emmanuelle Boehm-Courjault and Karen Scrivener, was originally published electronically on the publisher’s internet portal on 16 April 2020 without open access. The copyright of the article changed in February 2021 to © The Author(s) 2021 and the article is forthwith distributed under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/), which permits use, duplication, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.