БЕТОН, НЕ ТРЕБУЮЩИЙ ВЫСОКОКАЧЕСТВЕННОГО СЫРЬЯ

Abstract

In this article it has been shown that for improving physical -mechanical characteristics of the fine - grained concrete it is more effectively to use modified organic - mineral composition which introduction into the concrete mixture ensures the desired strength rise at concrete compression at 36% , in addition the rate of strength accumulation is raised significantly already at an age of 7 days . Obtained data of the strength and service life coefficients allow to recommend the modified fine- grained concrete when building supporting structures of the quick -growing buildings and constructions . The advantage of the fine - grained concrete is it’s simplicity of production and technology of it’s usage when conducting concrete works , since the fine-grained concrete is easily transported by means of concrete pumps at the object building up , excepting negative human factor when conducting monolith concrete works - transporting and packing into the casing. At the same time it’s necessary to note that one of the faults of the fine-grained concrete is it’s raised porosity. It was determined that for improving physical -mechanical characteristics of the fine-grained concrete it is more effectively to use the modified organic - mineral composition ( MOMC). Introduction of MOMC into the concrete mixture ensures the desired strength rise at the concrete compression at 36 %, in addition the rate of the strength accumulation is raised significantly already at an age of 7 days , strength of the modified concrete is approaching or equal to the desired strength .Improvement of the concrete strength within the all analyzed period is specified on the one hand by decreasing B/Ц relations , from the other hand by increasing hydration activities of the solidified system and increased formation of complex hydrate compounds on the bases of calcium silicate, that is proved by the results of the physical -mechanical researches.