In the Pavlodar and Turkestan regions, heaving of concrete sections of roads has been recorded. On social media, this caused a wave of criticism, but at the company «KazAvtoZhol» they explained that the cause is the heat, not poor-quality construction. This was reported by Kursiv.media, citing the company's press service.
The company explained: at temperatures above +35°C, concrete expands, and if the expansion joints between the slabs are insufficient, a sharp rise of one of them can occur — the so-called «blow-up». This is a natural reaction of the material to overheating, especially if asphalt, which conducts heat, has been laid on top of the concrete.
«We respond quickly to such cases, and measures are taken to eliminate and prevent them. Instead of criticism, understanding is needed: concrete roads, although durable, require a special approach in conditions of sharp temperature fluctuations», the press service reported.
It is reported that to eliminate the defects, specialists are widening the joints, restoring the surface and applying new technologies: expansion joints and heat-resistant concrete mixes. Such cases are typical for countries with a continental climate and are considered an inherent operational risk.