The employees of the company, that leads the construction of the highway “Tavrida”, have presented at the multimedia exhibition “Russia looking into the future” the advanced technologies for the construction of the Crimean road. According to experts, the latest technology is used as for the manufacture of the coverage of the road as for the equipment of the road’s technics.
The site, visited by the correspondent, is situated in Belogorskiy district, and it is a part of the so-called third phase of the “Tavrida” (from the village of Lgovskoe to Belogorsk). The total length of the stage is 37 km. New four-lane highway will partially be adjacent to the existing road by a new route.
There have been already actively launched the excavations on the site. They are complicated by the rocky soil which the builders constructing the road are to contend with. The workers refused to blasting operations and are breaking through the rock with hammers. The rock has one another feature – it dissolves under the influence of moisture, so the road builders pay special attention to waterproofing of the subgrade.
“In order to protect the roadbed and the slopes from the water, what we have to do here is a kind of “layer cake”. The ground is to be laid on the rocky soil, then special bentonite mats, which are then again covered with soil. This is done in order to exclude the ingress of water into the subgrade to do not make it become dissolved and did not give a draught,” explained the head of the third and fourth stages of the construction of the “Tavrida” Igor ZHADANOVSKY.
The so-called road clothing – cushion between the ground cloth and the layers of asphalt is created on the “Tavrida” in several layers. It consists of two layers of gravel with a total thickness of 60 cm, which is placed on the special geotextile fiber.
In the formation of the subgrade and pavement it is used such technology, that may be called cosmic. The graders are equipped with a special 3D hardware on which it is inserted the electronic map of the constructing site. The grader’s equipment receives the required parameters of the slopes of the slopes of the highway and elevations via satellite and actually works in automatic mode.
“The human factor is virtually eliminated. The bulldozer driver just steers, and the equipment of the grader is regulated itself by the program. On the site we have two such graders,” – said ZHADANOVSKY.
Asphalt of “Tavrida”
The laying of has started in mid-October, in the third stage of the “Tavrida”. The asphalt-concrete pavement of “Tavrida” will consist of three layers: the first two – the base, the third one the finishing stone mastic layer with thickness of 5 cm. The rollers for the asphalt are packed with sensors that allow to monitor the temperature of the mixture and the parameters of its seal. For laying the asphalt it is also used a unique technique for Crimea, in particular, a so-called reloader.
“The reloader is necessary in order to make the mixture more homogeneous, as there still comes some of the bundle during the way. The hopper of the reloader is loaded the asphalt. There it is mixed and is supplied with a constant temperature in the asphalt,” – said ZHADANOVSKY.
The roaders from St. Petersburg make the asphalt on their own mobile factories, which already work in Crimea. According to the chief technologist Dmitry PAKHARENKO, the asphalt for “Tavrida” is made with the most modern technology. “To minimize the wear of the road pavement, as there is applied a specially prepared gravel, various polymer additives, that provide resistance of the coating to the road in the summer, and resistance to cracking in winter in part of the today’s asphalt,” PAKHARENKO said.
A shortened New year
In two-lane variant builders have to hand over the part of the route by the end of next year. Now the speed of work is very encouraging – there will not be delays in construction periods. In the third stage it has been already laid half of all the required subgrade – 1.5 million cubic meters of the pavement – approximately 20%. The upper layers of the asphalt in two lanes are laid on for 3.5 km. The builders work tirelessly and sacrifice their holidays.
“Work is being done almost around 24 hours a day, seven days a week. We are going to rest for only three days this New year holidays,” – said ZHADANOVSKY.
The construction of the four-lane highway “Tavrida” in Crimea has began in 2017. The work is deployed in all six areas of construction in the Republic of Crimea. There have been already paved the first 18 km of the route from Kerch to Belogorsk. The length of the highway on the territory of the Republic of Crimea will be 237,5 km, to Sevastopol – 15.8 km. The cost of the republican site of the road is 154 billion rubles, and of that of Sevastopol – 14.5 billion rubles. The construction of the two-lane road from Kerch to Simferopol is planned to complete by December 2018. All four lanes of the new highway “Tavrida” will be launched into exploitation in 2020.