Experimental Definition of Speed of Initial Moisture Escape from Masonry Made of Autoclaved Aerated Concrete under Climatic Conditions of Kiev

Results of measurements of humidity of the masonry made of wall blocks of cellular concrete of autoclaved hardening of the average density D300, D400, D500, D600 of 300 mm thickness at the initial stage of operation under climatic conditions of the city of Kiev are presented. A full-scale study of the kinetics of moisture transfers in single-layer enclosing structures made of autoclaved cellular concrete has been conducted; terms of reducing the moisture content of wall from the initial until the equilibrium (operational) have been defined. In the course of the experiment the temperature and humidity of the inside air in the premises with experimental enclosing structures and factual values of monthly mean temperatures and humidity in Kiev from November 2011 until August 2013 were controlled. The conclusion about possibility to reduce the calculated moisture content of autoclaved cellular concrete in DBN «Heat protection of buildings» is made.

S.D. LAPOVSKAYA¹, Doctor of Sciences (Engineering)
O.V. SIROTIN², Engineer
G.I. GRINFELD³, Engineer (This email address is being protected from spambots. You need JavaScript enabled to view it.)

¹ Ukrainian Scientific and Research Institute of Building Materials and Products (68 Konstantinovskaya Street, Kiev, Ukraine)
² All-Ukrainian Association of Autoclaved Aerated Concrete Producers (7 Borisa Grinchenko Street, 010011, Kiev, Ukraine)
³ National Association of Autoclaved Aerated Concrete Producers (40 A Oktyabr’skaya Embankment, 193091, St. Petersburg, Russian Federation)

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