Wood as a building material has ancient roots and a long history of use. With the development of technology and the desire to live in better environmental conditions, interest in using wood to construct multi-story buildings is growing. This article is devoted to the prospects for the development of wooden multi-story buildings in Russia, in particular with the use of CLT panels, the popularity of which is growing all over the world. Comparative, statistical and logical analyzes were used as research methods. The article discusses modern methods and technologies for the construction of multi-story wooden buildings, including their advantages in terms of ecology, energy efficiency and design, conducts a comparative analysis of buildings made of reinforced concrete and CLT panels, and proposes a technological scheme for the reconstruction of buildings using CLT panels, including adding additional floors. Challenges and prospects for further development of this technology are highlighted, strategic solutions are proposed to reduce the cost of CLT panels

Keywords: clt-panels, wood construction, wooden structures, reconstruction, renovation, high-rise wooden construction

Technology of jet-grouting is a method of strengthening weak or heavily watered soils by pumping high-pressure cement slurry into the well to break the structure of the soil and simultaneously stirring its particles with cement slurry. The result is a ground-cement mass which has predefined improved strength and deformation characteristics. Technology of jet-grouting has a great potential for development and application in various construction industries, such as buildings, roads, bridges and other structures under various geological conditions. The development of jet-grouting technology won't only expand its application, but can improve competitiveness in the construction services market.

Keywords: recycling, reinforced concrete, secondary crushed stone, construction waste, crushing equipment.

Concrete and reinforced concrete recycling is a system of mechanical processing of waste concrete and reinforced concrete with the aim of obtaining raw materials for secondary use, i.e. resource renewal and returning construction waste to the economic cycle. In order to reduce costs for new construction, preserve natural resources, and land areas that could be used for new landfills, it is necessary to use recycled concrete and reinforced concrete as secondary crushed stone and sand-gravel mixture. At present, the economic necessity has arisen for the development of modern domestic equipment for processing concrete waste. Foreign manufacturers of crushing equipment from unfriendly countries are leaving Russia, which gives an impetus to the active development of this industry in our country, as well as to the emergence of new relationships with companies from countries that previously did not have access to our market.

Keywords: Keywords: recycling, reinforced concrete, secondary crushed stone, construction waste, crushing equipment.

In this article is considered progressive technology for producing heat-insulating materials by the method of self-compacting masses. Implementation of this method will allow obtain a significant economic effect in comparison with traditional technologies. Due to the use of the effect of obtaining excess pressure in a closed perforated form from an increase in volume during heating of pre-expanded polystyrene granules, it became possible to remove excess moisture, reduce the time of the technological process, and reduce energy consumption. This method allows to combine several processes in one operation: compaction of the mixture, heat treatment, removal of excess moisture. As a result of theoretical and laboratory research and experimental-production approbation, the possibility of implementing of heat-insulating materials of a wide range of applications with improved operational properties into mass production has been obtained. Perlite concrete is one of the effective heat-insulating material, the production of which is possible using the method of self-compacting masses. An assessment of the qualitative efficiency of perlite concrete was carried out: the thermal conductivity coefficient is within the limits required for effective heat-insulating materials. It was concluded that the use of perlite concrete in construction is promising: it is possible to reduce the drying time in 10-12 times, eliminate drying shrinkage, eliminate mechanical processing of products after heat treatment, obtain products of various configurations and volumes, with an improvement in strength characteristics at a minimum density. In this article is considered progressive technology for producing heat-insulating materials by the method of self-compacting masses. Implementation of this method will allow obtain a significant economic effect in comparison with traditional technologies. Due to the use of the effect of obtaining excess pressure in a closed perforated form from an increase in volume during heating of pre-expanded polystyrene granules, it became possible to remove excess moisture, reduce the time of the technological process, and reduce energy consumption. This method allows to combine several processes in one operation: compaction of the mixture, heat treatment, removal of excess moisture. As a result of theoretical and laboratory research and experimental-production approbation, the possibility of implementing of heat-insulating materials of a wide range of applications with improved operational properties into mass production has been obtained. Perlite concrete is one of the effective heat-insulating material, the production of which is possible using the method of self-compacting masses. An assessment of the qualitative efficiency of perlite concrete was carried out: the thermal conductivity coefficient is within the limits required for effective heat-insulating materials. It was concluded that the use of perlite concrete in construction is promising: it is possible to reduce the drying time in 10-12 times, eliminate drying shrinkage, eliminate mechanical processing of products after heat treatment, obtain products of various configurations and volumes, with an improvement in strength characteristics at a minimum density.

Keywords: method of self-compacting masses, heat-insulating perlite concrete, electric heating, closed perforated volume, bead polystyrene, energy efficient material