Snow thawing agent

Abstract

The snow thawing agent for road and bridge includes calcium chloride 50-95.5 wt%, urea 2-47.5 wt% and triple superphosphate 1.5-5 wt%; and to the components may be added sulfocarbamide 0.5-2 wt% and sodium gluconate 0.5-2 wt%. The snow thawing agent has the advantages of fast snow thawing speed, wide use temperature range of minus 5 deg.c to minus 40 deg.c, less corrosion of road and bridge, lesstoxicity to plant and low cost.

Description

Technical field [0001] The invention relates to a snow melting agent. More specifically, the present invention relates to a snow melting agent containing calcium chloride. Background technique [0002] At present, most of domestic and foreign countries still use industrial sodium salt for snow melting. The harm caused by sodium salt to pavement, bridges and plants after snow melting has been paid more and more attention. For example: Tianjin overpass, beam head and cap beam concrete have been built only 10 years ago Cracks and peeling occurred, the steel bars were exposed and corroded, and the bridge piers were seriously damaged. The main culprit was sodium salt from melting snow in winter. Therefore, some highways were closed due to snow. With the development of the national economy, my country’s highway construction has developed rapidly, and the total distance of highways has ranked third in the world. Research on environmentally friendly snowmelting...

AI Technical Summary

Problems solved by technology

At present, the research on environment-friendly deicing agents for highways at home and abroad is very extensive, involving a lot of raw materials, such as papermaking waste liquid, organic products, etc., but the industrialization has not been formed because of insufficient supply of raw materials or high cost; For road surface damage, calcium chloride is also added to the application of anti-rust agents. The corrosion inhibition rate of these products on carbon steel is still low, the highest is only more than 60%, and they are highly toxic to plants.

Images