GLOBAL AND DOMESTIC EXPERIENCE OF AERATED CONCRETE PRODUCTION AND THE POSSIBILITY OF USING LOCAL MATERIALS

Abstract

The relevance of the selected research topic is due to the fact that today aerated concrete is one of the most demanded building materials worldwide. Currently, the total output of aerated concrete and products from it exceeds 100 million cubic meters per year. In addition, aerated concrete has a low, compared to other concretes, production cost, especially products produced on the basis of ash and slag waste, and this makes the material even more popular for developers. All of the above shows the importance of studying the issues of technology of aerated concrete production on the basis of ash and slag wastes and the study of initial properties of raw materials for aerated concrete. The aim of the study is to investigate the possibility of using ash and slag waste and local natural resources for the production of aerated concrete, based on world and domestic experience. The basic requirements to raw materials for aerated concrete are given. On the basis of the conducted scientific and practical researches the possibilities of production of cellular aerated concrete with the use of local sand and ash and slag wastes of Ust-Kamenogorsk Thermal Power Plant are revealed. These raw materials meet all the requirements for materials according to GOST 25485-2019 "Cellular concretes. General technical conditions". The results of research allowed to recommend ash and slag as a silica material for the production of aerated concrete.