Ningrum, D., Soehardjono, A., Suseno, H. and Wibowo, A. (2023) “Analysis of the effect of using Covid-19 medical mask waste with polypropylene on the compressive strength and split tensile strength of high-performance concrete”, Eastern-European Journal of Enterprise Technologies, 1(6 (121), pp. 40–46. doi: 10.15587/1729-4061.2023.272529.