Technological features of application of plaster solutions with ground quicklime

Abstract

Abstract Lime plaster is widely used in new construction, repair and restoration works. The most common are plaster mortars based on killed lime. However, mortars based on ground unkilled lime might be preferable in some cases. They are characterized by fast setting and strength development; intensive heat emission during unkilled lime hydration makes it possible to carry out work at low temperatures. The paper discusses properties of compound plaster mortars based on ground unkilled lime. The dynamics of temperature and fluidity depending on time have been analyzed for different compositions, as well as mortar compression strength dependence on hold duration before usage for work, and time curves of mortar strength depending on the water to lime relation. To clarify requirements to the physical properties of mortars for mechanical applications, mortar fluidity and temperature were measured during mortar transportation in a mortar pump.