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WORKABILITY OF MASONRY MORTAR MIXTURES MODIFIED WITH NANOCELLULOSE

DRY MIXTURES

UDC 666.971.4 : 666.972.16

[:ru]Пухаренко Ю. В.[:en]Pukharenko, Yu.[:] [:ru]д. т. н., проф., Санкт-Петербургский государственный архитектурно-строительный университет, Санкт-Петербург, Россия[:en]Dr. Eng. Sc., prof., Saint Petersburg State University of Architecture and Civil Engineering, Saint Petersburg[:]

[:en]Khrenov G.M.[:ru]Хренов Г. М.[:] [:en]Candidate of Enginuring Sciences, associate professor, St. Petersburg State University of Architecture and Civil Engineering, department Technologies of building materials and metrology, St. Petersburg, Russian Federation[:ru]канд. техн. наук, доцент, Санкт-Петербургский гос. архитектурно-строительный ун-т, Санкт-Петербург, Российская Федерация[:]

[:en]Roerich A. V.[:ru]Рерих А. В.[:] [:en]master student, St. Petersburg State University of Architecture and Civil Engineering, department Technologies of building materials and metrology, St. Petersburg, Russian Federation[:ru]магистрант, Санкт-Петербургский гос. архитектурно-строительный ун-т, Санкт-Петербург, Российская Федерация[:]

Alitinform №3 (68) 2022 г. 62-68 p.

Abstract

The article is devoted to the modification of masonry mortar mixtures with nanocellulose in order to improve their processibility by reducing delamination. On the basis of experimental data, the effect of nanocellulose on water demand, density, stratification of the masonry mortar mixture, density, strength and rate of curing of the mortar is established. The optimal dosage of nanocellulose (0.4–0.5 % of dry matter by weight of cement) is determined, at which the greatest workability is achieved due to the least delamination, and the loss of strength characteristics remains acceptable.

Key words:

mortar, mortar mixture, workability, stratification, nanocellulose

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