Structure Optimization of Ultra-Light Cement Mortar with Due Regard for Geometrical and Physical and Mechanical Characteristics of Components

Results of the development of lightweight and ultra-light slurries having a low density with sufficient strength due to optimizing their structure with due regard for the geometric and physical-mechanical characteristics of components are presented. As a filler in these mortars, it is proposed to use hollow glass microspheres and as a binder – ultrafine cement. Because the hollow glass microspheres are more than 10 times lighter than cement, the increase in their share in the volume solution will reduce its average density. At that, it is necessary that the microspheres are characterized by maximally dense packing and are surrounded by a dense matrix, that is, their volume fraction in the bulk solution would be maximal. It is expected to achieve this fact by reducing the thickness of layers of the cement matrix, which is achieved by more fine dispersing the cement particles, or replacing the Portland cement by a new high efficient mineral binder – «Mikrodur». As a result of optimization of the structure with due regard for the geometric and physical-mechanical characteristics of components and their energy states, lightweight and ultra-light cement mortars with high construction and technical properties have been be obtained.

Yu.V. ISAEVA, Engineer (This email address is being protected from spambots. You need JavaScript enabled to view it.)
E.G. VELICHKO, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
A.Sh. KASUMOV, Engineer

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

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