This article examines the impact of nanotechnology on the development of flame retardant materials in the field of construction. The general provisions of nanotechnology and nanocomposites, their characteristics and classification are described. Examples of the use of nanotechnology to create fire-resistant materials and their direct application in construction are presented. The main problems of nanocomposites are presented, the solution of which will allow to bring passive fire protection of buildings and structures to a new level.

Keywords: fire protection, fire-resistant material, nanotechnology, nanocomposite, composite material, composite, polymer, material

The article presents the results of experimental studies. The optimal time of dispersion of the mixing water together with the nano-additive has been determined. The results of experiments to determine the effect of carbon nanotubes and plasticizer on fine-grained concrete are also presented. Strength characteristics were determined for the studied compositions. Based on the data obtained, the effect of the dispersion time was determined, as well as the effect of the combined use of the SikaVC 5-500 plasticizer and carbon nanotubes "Taunit-M".

Keywords: fine-grained concrete, carbon nanotubes, ultrasonic dispersion, plasticizer

The problems of modern methods of building construction, namely the obsolescence of construction technologies and the production control system at most facilities under construction do not provide the required level of quality. Due to low-quality materials, formwork, reinforcement, laying and ramming, defects and deviations from the most important requirements for the finished product appear and resource costs increase significantly. Therefore, in order to develop and introduce effective measures to improve the existing methods of building construction, this paper lists the main disadvantages of the technologies used. The practice of applied innovative technologies that can increase the quality and speed of the structures being built is given. The technologies of erecting buildings using various fixed formwork designs are considered.

Keywords: sound insulation, shock noise, residential buildings, noise insulation, air noise, monolithic house, comfortable environment, noise, construction, materials

The problems of modern monolithic construction, namely errors in the installation of sound insulation in monolithic construction, require special attention, since the increased level of noise and vibrations during the operation of premises affects the psychophysical state of a person. Modern enclosing structures are often used in standard solutions without the necessary additional sound insulation. Therefore, in order to develop and introduce effective measures to prevent existing defects in the premises, this paper lists the main factors affecting the high level of permissible noise in the premises. The practice of applied methods and solutions used to improve the sound insulation of individual structures is given. The technology of performing works on the device of sound and noise insulation in residential premises, with an indication of the maximum permissible noise level, is considered.

Keywords: sound insulation, shock noise, residential buildings, noise insulation, air noise, monolithic house, comfortable environment, noise, construction, materials

The actual problem of modern construction is considered - the expansion of resource-saving technologies. The use of dispersed reinforcement of cellular concrete allows to improve its strength characteristics, reduce the consumption of cement, one of the most expensive components of the concrete mix. When reinforcing cellular concrete with synthetic fibers, it is possible to obtain products with a lower density without reducing the strength characteristics.

Keywords: resource-saving technologies, aerated concrete, monolithic construction, dispersed reinforcement, fiberglass, thermal resistance, external walling

Currently, materials made of cellular concrete are increasingly used in construction. The strength of the cellular blocks depend on their densities. According to the test results, the dependence of the strength of aerated concrete samples on their density was obtained. However, if we reinforce the aerated concrete blocks with fiber, we will get very different values. When reinforcing cellular concrete with fibrillated fiber, the dependence of strength on density varies – the strength of the samples increases 1.8 – 2.4 times, compared with the strength of non-reinforced samples at a constant density. This means that when fiber is included in cellular concrete, blocks of such low grades as D300 - D400 can be used for the construction of load-bearing walls in low-rise construction

Keywords: cellular concrete, aerated concrete, density, strength, reinforcement, fiber, thermal insulation, bearing wall, enclosing structure