The service life of highways in Kazakhstan will increase several times due to the new construction technology and using geotextiles. The material is used as the lowest layer in the construction of transport routes. As stated by scientists at the Kazakhstan Road Research Institute, it prevents groundwater accumulation and soil erosion. It bears noting that geotextile does not rot and is resistant to chemicals. Its properties do not deteriorate at high and low temperatures. And most importantly, the material prevents rutting, which means that pavement on the highways will not deteriorate. The new construction technology requires a small amount of rubble and sand, which allows to significantly reduce the cost of highway construction. Now the new method with the use of geotextile is applied for pavement laying on the test section of the Konayev-Kurty highway. It should be noted that the new method, like the previous ones, first of all, requires strict observance of the entire process, according to experts.
“The asphalt pavement may not follow some technologies, such as laying temperature, construction load, and the number of rollers and passes. So, a technical supervision company must carefully monitor all this. Owner’s inspectors have to be present on the road all the time and check for all indicators, from the production of mixtures to its delivery. That’s when we will have good roads. Even if we use good material, which shows great results, but the laying technology fails, the asphalt will no longer be suitable,” said Galiya Assanova, spokesperson for the Kazakhstan Road Research Institute.
This is not the only research by Kazakh scientists. Now the Kazakhstan Road Research Institute specialists are studying the possibilities of using sulfur in road construction. According to them, this chemical element will allow to solve, for example, the construction problems of highways in the western regions of the country. Scientists have developed sulfur rubble which is more durable and stronger than conventional materials due to the interaction of sea shell rock and sulfur. The new material will slow down the destruction of highways. Another development of domestic experts is a nano additive to bitumen. Carbon powder strengthens the binding ability of the material and improves its quality. The institute experts note that these products will be particularly useful in the country’s sharply continental climate.
Source : SilkWay