**5. Conclusions**

The results of the performed research allowed the formulation of the following conclusions:


**Author Contributions:** W.K. planned and organized the experimental study, made the selection of materials and the mix design, wrote part of the article text. R.J. conducted an analysis of the results using the EIPI method, wrote part of the article text, edited the text. D.G. performed tests of natural radioactivity and developed the results of the tests. I.W. co-edited the text, participated in analysing the results and formulating conclusions. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research was supported by the City of Płock through the Mayor's Research Grants Programme "Collaboration with Universities", grant number [502250200003]. The APC was funded by the City of Płock through the Mayor's Research Grants Programme "Collaboration with Universities", grant number [502250200003].

**Acknowledgments:** The work has been supported by the City of Płock through the Mayor's Research Grants Programme "Collaboration with Universities".

**Conflicts of Interest:** The authors declare no conflict of interest.
