Physical and Mechanical Properties of Lime Coatings with the Additive of Polysaccharides

Penza State University of Architecture and Construction, 440028 Penza, st. Gherman Titov, Russia

^* Corresponding author: loganin@mail.ru

Abstract

Information is provided on the use of synthetic polysaccharides in lime coatings intended for the restoration of historical buildings and finishing of newly constructed objects. It has been shown that lime compositions with the addition of polysaccharides are characterized by higher cohesive strength due to the high content of calcite and the formation of inter- and intracrystalline organic macromolecules. It has been established that the introduction of the Atren Cem LV additive contributes to a sharp increase in plastic strength compared to the control composition by 1.5 times at the time of mixing and by 2.6 times after 8 hours of hardening. The introduction of Sunbo PC 1021 plasticizer into the lime mixture helps reduce plastic strength. However, after 7 hours from the moment of mixing, an increase in plastic strength is observed, outstripping the increase in plastic strength of the control composition.