Alma-Ata today is a dynamically developing city of Kazakhstan. Being the cultural, business and financial center of the region, it is called the "Southern Capital". Almost simultaneously with the birth of the millionth inhabitant of Alma-Ata, conversations began about the need to lay a subway in the city. The construction of the metro began in 1988, but its opening was postponed many times, until, finally, on December 1, 2011, the first stage of the Almaty metro, consisting of seven stations, accepted the first passengers.
In connection with the rapid development of the megalopolis, which has been observed in recent years, the load on the transport network has increased significantly. Last year alone, the Almaty metro transported 6.5 million people. Therefore, the construction of the second stage of the "underground" has become a very urgent issue for the townspeople. The first stations of the second launch site "Sairan" - "Moscow" will be able to receive passengers already at the beginning of 2015. They will connect the sleeping areas to the city center. In the future, the "subway" will be expanded and directed to the north-west of the megalopolis, which will allow Almaty residents to quickly and easily cross the entire city.
It is noteworthy that the name of the new station "Moscow" was not accidental. In 2011, the Embassy of the Republic of Kazakhstan and the Moscow government agreed to exchange the names of the stations under construction. Therefore, the Moscow station will appear in Alma-Ata, and the Alma-Atinskaya station in the Russian capital.
At the moment, the station "Moscow" is preparing to meet the first passengers. Architectural and finishing work is underway here, and communications are being laid in the tunnels at the same time. However, the metro builders were able to reach the finish line after the completion of the thermal and waterproofing device. The high requirements for reliability, fire safety and durability imposed on waterproofing and heat-insulating materials of such a technically complex object as a metro station are embodied in the products and complex solution TN-FUNDAMENT Barrier with a protective membrane PLANTER Standard, waterproofing membrane LOGICROOF T-SL 2, 0 mm and thermal insulation made of extruded polystyrene TECHNONICOL CARBON PROF manufactured by TechnoNICOL. The total volume of deliveries amounted to 25,000 m2.
When developing ready-made solutions for hydro and thermal insulation, TechnoNICOL specialists are guided by three main principles: compatibility of components, durability of the structure and an affordable price. This explains the high qualities of the TN-FOUNDATION Barrier system. It prevents the negative impact of wet soil on the foundation structure and protects its exploited space from moisture and negative temperatures. A layer of insulation based on XPS TECHNONICOL CARBON PROF provides high strength, reliability, durability and efficiency of the system. This is due to the energy-saving properties of thermal insulation, as well as the high compressive strength of the material. The reliability of the system also lies in the strength and tightness of the welded seams, the quality of which can be accurately checked by instruments. For this, the LOGICROOF T-SL membrane is used with a signal layer for fast fault detection. A feature of this complex solution is that it is not burdened with additional equipment, as well as ease of installation.
During the construction of the Moscow station, a two-layer unreinforced polymer membrane LOGICROOF T-SL was used as a waterproofing material in the TN-FOUNDATION Barrier system. This is a premium-class product, which is produced at the first full-cycle plant in Russia using advanced extrusion technology, which makes it possible to obtain high-quality material without internal defects. In the TN-FOUNDATION Barrier system, the membrane is mechanically fixed to the walls and freely laid along the concrete preparation horizontally in one layer. The canvases are fastened by overlapping welding with automatic specialized equipment with the formation of a double seam and a central air channel (test channel), which allows you to control the tightness of the seam. The process itself is absolutely fireproof, since it does not require the use of open fire.
The issue of membrane thickness deserves special attention. Under the influence of climatic and many other factors, the membrane inevitably becomes thinner and more vulnerable. The average decrease in membrane thickness is about 0.15 mm over 10 years, which means that an increase in the thickness of the coating by only 0.3 mm (from the standard 1.2 mm) can increase its service life by as much as 20 years. Needless to say, how important the durability of the material is when it comes to building a metro station.
Extruded polystyrene foam TECHNONICOL CARBON PROF is used as a heat-insulating layer in the system, which has a minimum thermal conductivity, practically zero water absorption coefficient. The material does not shrink over time, is chemically resistant and does not rot. The high strength of the material ensures the reliability and durability of the entire building structure.