Technology of production of polystyrene concrete using solar energy Lyazat Aruova, Nabi Dauzhanov, Zhumabeke Ospanova, Shamshygaim Toleubayeva and Aizhan Utkelbaeva MATEC Web Conf., 251 (2018) 01003 Published online: 14 December 2018 DOI: 10.1051/matecconf/201825101003