Comparative Analysis of Influence of Nanomodification and Micro-Dispersed Reinforcement on the Process and Parameters of Destruction of High-Strength Lightweight Concrete

The paper presents a comparative analysis of the impact of nanomodification and microdispersed reinforcement technologies on the process and parameters of destruction of high- strength lightweight concretes with hollow microspheres. It has been established that the introduction of microfiber is the most justified in terms of indicators of physico-mechanical properties and parameters of acoustic emission. Introduction of polypropylene fiber reduces the defectiveness of the structure of the composite, changes the nature of destruction and leads to an increase of strength characteristics. The use of hollow microspheres with a nanoscale modifier grafted on the surface also contributes to a change in the nature of the frac- ture and increases the strength of high-strength lightweight concrete. The effectiveness of this method is determined by a smaller amount of modifier (0.01% by weight) compared to the amount of microfiber, but is limited by the specific strength of high-strength lightweight concrete to 40 MPa.

A.S. INOZEMTSEV, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
E.V. KOROLEV, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)

Moscow State University of Civil Engineering (26, Yaroslavskoe Highway, Moscow, 129337, Russian Federation)

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