CONTEST

[:ru]Володин В. М.[:en]Volodin V. M.[:] [:ru]аспирант, победитель 1-го Международного семинара-конкурса молодых ученых и аспирантов, работающих в области вяжущих веществ, бетонов и сухих смесей в номинации «За лучшую научно-исследовательскую работу в области вяжущих веществ, бетонов и сухих смесей», Пензенский государственный университет архитектуры и строительства, Пенза, Россия[:en]Postgraduate student, the winner of the first International seminar-contest for young scientists and postgraduate students specializing in binding agents, concrete and dry mixtures in nomination “For the best scientific and research article in a field of binding agents, concrete and dry mixtures”, Penza State University of Architecture and Construction, Penza, The Russian Federation[:]

[:ru]Валиев Д. М.[:en]Valiev D. M.[:] [:ru]аспирант, Пензенский государственный университет архитектуры и строительства, Пенза, Россия[:en]Postgraduate student, Penza State University of Architecture and Construction, Penza, The Russian Federation[:]

[:ru]Гуляева Е. В.[:en]Gulayeva E. V.[:] [:ru]аспирант, Пензенский государственный университет архитектуры и строительства, Пенза, Россия[:en]Postgraduate student, Penza State University of Architecture and Construction, Penza, The Russian Federation[:]

[:ru]Калашников В. И.[:en]Kalashnikov, V. I.[:] [:ru]докт. техн. наук, профессор, Пензенский государственный университет архитектуры и строительства, Пенза, Россия[:en]Doct. Eng. Sc., Professor, Penza State University of Architecture and Construction, Penza, The Russian Federation[:]

Alitinform №6 (17) 2010 г. 88-92 p.

Abstract

The problem of building construction using ultra high-strength concretes of new generation based upon composite binders instead of pure cement is considered. The goals of the research were to develop formulas for dry concrete mixes with optimal balance of cement, ground sand, microsilica, hyper–plasticizer; to define density of dry mixtures; to prepare reactive–powder concretes. The research results prove the possibility of obtaining efficient high–strength reactive–powder concretes, reactive–powder–sand concretes and reactive–powder crushed stone concretes with the specific cement consumption of 4,1–5,8 kg per each 1 MPa of its strength by using finely–grained and powdered concrete mixes.

Key words:

high–strength concrete; ultra high-strength concrete; dry mixtures; rheology; super– and hyper–plasticizers; microsilica; pozzolanic additives; aggregation stable systems; maximally concentrated dispersed systems