TY JOUR TI INVESTIGATION OF STRENGTH GAIN OF HEAVY CONCRETE IN AN AGGRESSIVE ENVIRONMENT. USING SULPHATE-RESISTANT CEMENT KW polycarboxylate KW sulfate-resistant cement KW aggregates KW concrete KW strength KW additives KW composition JO Construction and industrial safety AU Svisch, I.S. PY 2024 IS 0 PB V.I. Vernadsky Crimean Federal University