Thirteen tanker trucks loaded with 700 tons of Liaohe Petrochemical Company's special asphalt were rushed to Inner Mongolia more than 1,000 kilometers away for the construction of the Hohhot Pumped Storage Power Station.
It is reported that the Hohhot Pumped Storage Power Station is located in the cold zone of China, with high latitude and poor climatic conditions. The temperature span in winter and summer reaches 115 degrees. Therefore, the used asphalt must have excellent high and low temperature performance, and the temperature in summer should reach 70 degrees Celsius. Above, the winter temperature should reach minus 45 degrees Celsius. In this extremely cold environment, using asphalt as a dam surface impervious material has no precedent in the world.
Liaohe Petrochemical Company is the largest high-quality road asphalt production base in China. The annual output of asphalt has reached 12% of the total bitumen output of the country. The performance indicators of the “Kunlun†asphalt produced rank among the top in more than 200 kinds of asphalt in the world and have won the national brand name. The title of the product is one of the three major products of CNPC. The asphalt market has expanded into the fields of airport, water conservancy, hydropower, and construction.
In order to complete the construction tasks under extremely harsh air temperature conditions, the company’s researchers and the technical staff of the China Institute of Water Resources and Hydropower Research have formed a joint research team. After more than a year of effort, they use the excellent high temperature performance of imported crude oil and the low Liaohe River. The excellent low-temperature performance of condensate crude oil has been repeatedly adjusted according to different proportions, and finally the special hydraulic asphalt that meets the cold regions has been developed. After more than six months of practice, this asphalt has fully withstood the test of extremely cold winters and hot summers. It has truly achieved zero-70 degrees Celsius non-flowing, minus 40 degrees Celsius is not cracked, fully meet the requirements of the project and will create The use of asphalt concrete dam surface seepage prevention in the international similar projects in high latitudes. On April 5th, the contractor of the Hohhot Pumped-storage Power Station and the Liaohe Petrochemical Company signed a supply contract of 9,000 tons.
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