Study of the influence of the hardening temperature on the change of strength during compression of modified expanded clay lightweight concretes
Journal Title: Вісник Одеської державної академії будівництва та архітектури - Year 2018, Vol 1, Issue 71
Abstract
The article presents the results of the study of the effect of hardening temperature on the change of strength during compression of modified lightweight concretes. The analysis of the results shows that concretes based on Portland cement, modified with a complex organo-silica additive, are characterized by more intense increase of strength when increasing and lowering the hardening temperature compared to the control composition of concrete. When the samples are kept under the heat treatment mode 3+3+3 hours at a temperature (t = 30±2 °С) for expanded clay lightweight concrete, modified with a complex organo-silica additive, the compressive strength is 82% of the strength of the control composition of expanded clay lightweight concrete after hardening for 28 days . Using a complex additive allows to abandon the high-temperature modes of heat treatment, replacing them with low-temperature technologies for accelerating the hardening of concrete. Also, a complex organo-silica additive can be characterized as promising for use not only in monolithic construction, but also for the manufacture of prefabricated constructions and structures.
Authors and Affiliations
K. K. Pushkarova, K. A. , Kaveryn
Keywords
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