Evaluating the efficiency of the fluidity retention of ready-mix concrete during the transportation of it to the construction siteOleksii Kabus, Larisa Butska, Olga Makarenko, Lidiya Pershina and Andriy TymoshchenkoMATEC Web Conf., 230 (2018) 03005DOI: https://doi.org/10.1051/matecconf/201823003005