AUTHOR=Qin Jiankun , Pang Xueyu , Li Hailong , Zhang Zhen TITLE=Corrigendum: Mechanism of long-term strength retrogression of silica-enriched Portland cement assessed by quantitative X-ray diffraction analysis JOURNAL=Frontiers in Materials VOLUME=9 YEAR=2022 URL=https://www.frontiersin.org/journals/materials/articles/10.3389/fmats.2022.1101881 DOI=10.3389/fmats.2022.1101881 ISSN=2296-8016