Self-compacting concrete modified with dispersion of carbon black

With the development of the concept of "sustainable development", considerable attention is being paid today to the problems of energy conservation, environmental protection and rational consumption of natural resources, in connection with which the development of new concrete formulations and concreting technologies is relevant. In particular, self-compacting concrete (SCC) is a promising material that allows optimizing the process of laying concrete, while reducing labor and energy costs. An important aspect in the implementation of the concept of "sustainable development" is the use of industrial waste as concrete modifiers. This study is devoted to the study of the effect of carbon black dispersion on the technological and physico-mechanical properties of the SCC. The carbon black content in the concrete mix varied from 0 to 0.5% by weight of cement. An increase in the additive content from 0 to 0.5% led to an increase in the spreading of the standard cone from 650 to 700-720 mm, while the time to reach the spreading diameter of 500 mm was 3-4 s. The density and compressive strength of SCC samples modified with the dispersion of carbon black, compared with the control sample, changed slightly with an increase in the additive content up to 0.25% by weight of cement.