STRUCTURAL CHARACTERISTICS AND PERFORMANCE OF CONCRETE WITH A COMPOSITE MODIFYING ADDITIVE

Introduction: The paper addresses the effect of a composite modifying mineral additive based on waste — tailings from Balkhash Mining and Processing Plant microsilica structural characteristics performance heavy concrete. Purpose study: We aimed to select optimal B25 B35 concrete mixes MV-D20 modified binder with in its composition evaluate Methods: In course study, standard methods were used design test Proportioning was performed accordance State Standard GOST 27006-86 “Concretes. Rules for Mix Proportioning”. physical mechanical properties determined 10180-2012 Methods Strength Determination Using Reference Specimens”. strength assessed 18105-2018 Control Assessment Strength”. Results: It established that terms rate gain, designed are fast-curing. initial curing period 7 days, concretes gain 90.1 85.4% required strength, respectively. average values water absorption 4.20 3.46%, tightness, have W10 W12 grades. application consisting instead sulfate-resistant Portland cement will reduce relative deformation an aggressive environment by 12%.