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Project Outline
The project starts from the No. 308 national highway in the east, stretches over
Construction began in December 2006 and is scheduled for completion in three years. Using state-of-the-art technologies and materials, it is designed for a century of use, even in harsh conditions. The concrete decks and piers are fully exposed in marine environmental, conventional concrete protection materials cannot meet the needs of durability of concrete, aromatic and aliphatic polyurea is the best choice to prevent damage and improve the durability to the bay ecology and water quality.
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Project Outline
? Total Investment: RMB 9 Billion
? The Main Line：
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? Height: Upon Water
? Width:
? Designed For: Both Directions 6 Lanes
? Design Speed：
? Polyurea Application: Piers and Railing
? Total Construction Period: 3.5 Years
Point of Interest:
?Primers, sealants, putty, Aliphatic spray polyurea coatings
Application
Based on the requirements specified by Shandong Hi-Speed Group. Ltd, the project incorporated several other coatings. “One of our priorities was to have all of our products performed excellent compatibility and supplied from our institution, so that we didn’t’t have a problem trying to afraid match the harsh environment and all of other different coatings. Qtech serials products have met all of their needs.
According to the experience of being engaged in R&D on polyurea for decades of years, our engineer chose Qtech-112 surface preparation system and Qtech-411 Spray Pure Polyurea Ultra-Weather Resistant Material finally.
? Use grinding machine to profile concrete surface
? Remove all curing compounds, laitance and dusts
? Repair all defects, pinholes, bug holes and expose voids by Qtech-112
? Qtech-411 Aliphatic Polyurea Spray
Surface preparations began with a thorough washing of chloride to remove salts from sea water and marine atmosphere. Once cleaned, areas of damaged or missing concrete were identified, evaluated and repaired by Qtech-112. Once the surface was properly prepared, a 40-millimeter layer of Qtech primer was applied. After the primer was setting, a secondary layer was sprayed by
As the jobsite was accessible but tricky – front access was possible only with pickup trucks. All equipment had to be assembled in a spray rig with GUSMER H-20/35 Pro, GX-7-400 Gun, Air Dryer, Air Compressor etc。
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