This research paper provides a method for calculating airborne sound insulation by encloses from volumetric-block buildings. The choice of the most suitable construction solution for the technical condition of objects at the design stage for building elements should primarily provide insulation from sound and a safe mode inside buildings, in which protection conditions in the combination of energy efficiency and stability should be taken into account, as well as competent decisions and its impact on the construction process buildings. Numerous scientific studies show the negative effect of sound on human health by the occurrence of various diseases such as cognitive impairment of the fetus in reproductive people, sleep disturbances, tinnitus, irritation, and dysfunction of some human organs. Therefore, sound exposure should be considered a source of inconvenience and a source of harm to human health. Sound waves collide with the surfaces of enclosing structures, causing them to vibrate and transmit the negative effects of the air around them in adjoining rooms, in which, from the point of view of regulatory requirements, in many cases, it does not meet the requirements, since comfort also depends on the design and sound insulation of the volumetric-block buildings. Many of these problems are easily solved at the design stage by choosing the right design solution and calculating the soundproofing qualities of the enclosing structures. In particular, one of the main tasks at the design stage is the development of structural solutions for internal enclosing structures that have a relatively small mass that allows reducing the load on the supporting structures of the building and plummets the material consumption of construction. At the same time, it is necessary to ensure compliance with the regulatory requirements for the isolation of airborne sound of enclosing structures.
This research paper provides detailed information about the most advanced innovative technologies used in the educational process of the world's leading higher educational institutions and methods for their effective use.
In the conditions of hot and dry climate, the concrete mixture quickly loses its mobility and workability. In this regard, it is necessary to plasticize it by introducing various surfactants; at the same time, the surfactant additive should not slow down the process of hydration and hardening. To ensure salt resistance, it is necessary to increase the density and strength of concrete. The proposed complex additive is obtained by joint grinding in a ball mill of soda sulfate melt and gossypol resin to a specific surface of 2800 cm2/g at the rate of 0.5-1.5% and 0.1-0.3% by weight of cement. From the obtained results, it can be seen that with an increase in the content of gossypol resin from 0.1 to 0.3%, the normal density decreases by 1.4-4 points, and the setting time due to the accelerating action of the soda sulfate melt is reduced at the beginning by 20-50 minutes and the end by 60 - 240 min. Reference cement for 28 days gained a strength of 56 MPa, with a complex additive of 60-68 MPa. The coefficient of salt resistance of the reference 0.55-0.65 and with a complex additive of 0.80-0.86 is observed due to the strength and density of the samples. Increasing the strength makes it possible to save 17-21% of cement.
This research paper expresses opinions on the further deepening of economic reforms and the rapid development of a network in the building materials industry, special attention is paid to the production of new modern building materials, structures and products, modern methods for improving the fire resistance of building materials. Limiting the use of combustible materials reduces the likelihood of fire safety impact on people; from the practice of numerous experiments, it is known that hardly combustible and even non-combustible materials decompose under fire conditions with the release of smoke and toxic products. As the fire intensifies, the combustion of these materials intensifies, the flame spreads over the surface and generates additional heat, that is, the material acquires the properties of "non-combustible" and "slow-burning", and the disadvantages of the traditional standardization system must be justified from an economic or technological point of view.
This research paper describes airborne soundproofing of multilayer light enclose structures at the stage of designing and reconstruction of residential buildings, with the help of which it is possible to obtain a sufficiently reliable calculation, representing the correct passage and radiation of the sound stream in these structures, taking into account the finiteness of the dimensions, fixing conditions, physical and mechanical characteristics of materials and the method of proper installation.
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