Hubei Traffic Investment Qitai Highway Surface Project
Project Background
The Qitai Highway project, developed by Hubei Traffic Investment Group, is a key regional transportation infrastructure connecting central Hubei Province. The project required high-quality surface materials for the highway pavement structure, demanding asphalt emulsions and modifiers that could withstand heavy traffic loads, temperature variations, and long-term durability requirements.
Project Details
| Parameter | Detail |
| Client | Hubei Traffic Investment Group |
| Project | Qitai Highway Surface Project |
| Location | Qitai, Hubei Province, China |
| Application | Highway pavement surface layer |
| Products Supplied | Medium-crack asphalt emulsifier, SBR latex (40%), anti-stripping agent |
| Project Scale | Multi-kilometer pavement section |
Challenges
01 Heavy traffic load
the highway corridor experiences high truck volumes, requiring pavement materials with superior rutting resistance and fatigue life
02 Temperature variation
Hubei's climate subjects pavement to significant thermal cycling, requiring emulsions that maintain adhesion across freeze-thaw cycles
03 Quality compliance
project specifications required full material testing documentation and third-party verification for government approval
04 Supply schedule
surface construction required coordinated material delivery aligned with the project paving schedule
Solution
HDC's technical team conducted a thorough review of the project specifications and local climate conditions, then recommended a custom asphalt emulsion system:
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01
Medium-crack asphalt emulsifier
provides stable emulsification and rapid setting time suitable for Hubei's climate conditions
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02
SBR Latex (40% concentration)
added to the emulsion to improve pavement flexibility, cracking resistance, and moisture damage resistance
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03
Anti-stripping agent
incorporated to ensure strong adhesion between asphalt binder and aggregate in the presence of moisture
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04
On-site technical support
HDC engineers coordinated with the paving crew to optimize spray rates and mixing procedures
Results
· Pavement surface completed to project quality specifications and accepted by the client without rework
· Improved crack resistance observed in early service — attributed to SBR latex modification
· Moisture damage resistance verified through laboratory testing of core samples
· Smooth delivery schedule maintained — no material shortages or quality delays during the paving season
· Positive client feedback — Hubei Traffic Investment Group recognized HDC's technical responsiveness and product consistency
