Machine learning approaches for estimation of compressive strength of concrete Marijana Hadzima-Nyarko, Emmanuel Karlo Nyarko, Hongfang Lu and Senlin Zhu Eur. Phys. J. Plus, 135 8 (2020) 682 Published online: 29 August 2020 DOI: 10.1140/epjp/s13360-020-00703-2