The PLOS One Editors issue this Expression of Concern because this article [1] was identified as one of a series of submissions for which we have concerns about the peer review process. Readers are advised to interpret the article [1] with caution.
Reference
Citation: The PLOS One Editors (2026) Expression of Concern: Evaluating the compressive strength of glass powder-based cement mortar subjected to the acidic environment using testing and modeling approaches. PLoS One 21(6): e0350699. https://doi.org/10.1371/journal.pone.0350699
Published: June 2, 2026
Copyright: © 2026 The PLOS One Editors. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.