Study of the structure of the contact zone in concretes with combined aggregates

Abstract

Study of the structure of the contact zone in concretes with combined aggregates

Egorochkina I.O., Serebryanaya I.A., Shlyakhova E.A., Matrosov A.A., Pronina K.A., Kuzina A.N.

Incoming article date: 22.05.2019

The results of the investigation of the structure of the concrete, modified by the additive expanding, on the combined aggregate, which is a natural crushed stone mixed with crushed concrete, are presented. The study of the properties and regularities of the formation of the concrete structure is simultaneously a method of controlling their production. Regularities and reasons for the change (decrease) in the quality indices of concretes with a combined aggregate are established. Investigation and normalization of the properties of concretes on combined aggregates will allow using them along with traditional structural concrete.

Keywords: recycling, combined filler, contact area, structure, defects, durability