Modified gas gypsum for thermal and sound insulation in engineering structures

Saint-Petersburg State University of Architecture and Civil Engineering, 190005 Saint Petersburg, Russia

^* Corresponding author: mokrova2017@yandex.ru

Abstract

The relevance of gypsum materials in the context of "Eco-construction" is beyond doubt, since gypsum is exactly the building material that fully meets the requirements of ecology and environ-mental protection. Improving the efficiency of gypsum building materials by creating new modi-fied materials with improved technical and operational characteristics currently remains an im-portant and urgent task. In conditions of energy and resource saving due to the lack of the need to build new production lines and sections, this problem was solved by creating modified gypsum materials with improved functional performance properties through the use of modern highly effective modifying micro- and nano-additives. The paper discusses the effect of nanocellulose and styrene latex microadditives on the morphology and properties of gas gypsum – compressive and flexural strength, and sound absorption coefficients. We used a standard gypsum binder of the Peshelan gypsum plant grade G-6. Crystalline citric acid was used as a gas - forming agent. An aqueous emulsion butadiene-styrene latex and an aqueous suspension of nanocellulose were used as strengthening and modifying structuring microadditives.