Cracking the Extreme Cold Access Challenge! Cold-Resistant & Pressure-Resistant Paving Mats – No Brittleness at -70℃,
In extremely low-temperature environments below -40 ℃, traditional paving materials seem to have lost their "sinews and bones", not only experiencing a sharp decline in performance but also becoming an "invisible hidden danger" threatening construction safety. A wind power project in Inner Mongolia once experienced cracking of steel plate welds due to low temperatures, causing three engineering vehicles fully loaded with equipment to overturn during transportation, resulting in direct economic losses exceeding 500,000 yuan. During the construction of the Siberian gas pipeline, the wooden pads expanded due to water absorption and freezing, causing their load-bearing capacity to drop sharply by 60%. On average, a batch needed to be replaced every three days, and the replacement cost accounted for 30% of the total project investment. Even high-strength concrete will experience surface peeling and internal structure disintegration under the action of freeze-thaw cycles. The curing period has been extended from 2 days at normal temperature to over 7 days, seriously delaying the progress of the project.
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