Effect of modifier mb10-50c on the physical and mechanical properties of high-strength fine-aggregate "powdery" concrete

Abstract

In this study we used concrete modifier MB10-50C, an admixture on an organic-mineral basis
contained of micro-silica, fly ash, hardening regulator, superplasticizer, to produce the
high-strength fine-aggregate "powdery" concrete (HSFPC). We produced samples of HSFPC
with dimensions of 100x100x100 mm and 100x100x400 mm. The physical and mechanical
characteristics of HSFPC, such as: compressive strength, tensile strength at bending, strength
at axial tension, cracking moment, HSFPC grade, and elastic modulus, at the curing periods of
7, 14, 28, 60 days, have been determined. The research results have been implemented in the
construction of high-rise buildings of the Moscow International Business Center "Moscow
City", and in reconstruction of the Engineering Faculty building of the RUDN University.

Keywords: compressive strength, tensile strength at bending, strength at axial tension,
cracking moment, elastic modulus.