Retraction Note: Performance of sustainable self-compacting fiber reinforced concrete with substitution of marble waste (MW) and coconut fibers (CFs) (Scientific Reports, (2021), 11, 1, (23184), 10.1038/s41598-021-01931-x)

Retraction of: Scientific Reports, published online 30 November 2021 The Editors have retracted this article. After publication concerns were raised that the XRD spectra in Fig. 8 are identical. The authors are unable to provide the original data for examination. In addition, an investigation by the Editors has shown inappropriate changes in authorship during the review process. The Editors no longer have confidence in the results and conclusions presented. Jawad Ahmad disagrees with this retraction. Fahid Aslam and Mohamed Hechmi El Ouni did not respond to correspondence from the Editors about this retraction. The Editors were not able to obtain current email addresses for Rebeca Martinez-Garcia and Khalid Mohamed Khedher.