Do UHPC Manufacturers Have Many Cooperation Cases on Bridge Projects? Infrastructure Engineering Practice with Qinglong Group

In the field of bridge engineering, UHPC applications are advancing from "pioneering trials" toward "large-scale adoption." With its ultra-high strength, high durability, and outstanding toughness, UHPC is particularly suitable for scenarios such as bridge deck pavements, wet joints, main girder components, and bridge strengthening. As one of the earliest manufacturers in China to apply UHPC in bridge engineering, Qinglong Group has successfully participated in multiple key projects, including sea-crossing bridges, municipal viaducts, and old bridge repairs. For example, in the bridge deck pavement project of a sea-crossing bridge in Guangdong, the UHPC materials we supplied significantly improved the deck's crack resistance, impermeability, and wear resistance; in the strengthening of old girders on a busy expressway in East China, section enlargement using Qinglong UHPC enabled rapid construction and greatly extended the bridge's service life. These cases demonstrate that Qinglong Group not only possesses extensive experience in the building sector, but has also accumulated solid engineering data and successful practices in the technically demanding infrastructure field.

Bridge Deck Pavement and Structural Repair

When used in bridge deck pavement layers, UHPC can substantially reduce thickness and dead weight while solving the pain points of traditional pavements—easy cracking and short service life. To this end, Qinglong Group has developed a dedicated castable UHPC formulation featuring self-leveling, no vibration required, and high early strength, allowing traffic to reopen quickly and greatly minimizing disruption to existing traffic—an advantage of immense value in urban bridge maintenance.

Precast Components and Wet Joints

In prefabricated bridges, UHPC is used to produce thin-wall, long-span precast bridge deck panels, or for the wet joint connections of precast segmental girders. Its ultra-high bond strength and micro-expansion properties ensure joint quality, making the entire bridge seamlessly integrated. Qinglong Group has established strategic partnerships with a number of large road and bridge construction enterprises, providing customized precast component solutions.

Bridge Strengthening and Seismic Enhancement

For old bridges with insufficient load-bearing capacity or damage, jacketing with UHPC is one of the most effective strengthening techniques. Qinglong UHPC bonds strongly with existing concrete, significantly improving member stiffness as well as flexural and shear capacity. The multiple dilapidated old bridge renovation projects we have participated in have all achieved the goals of "construction without traffic interruption" and "service life extended by more than 30 years."

Bridge engineering bears on public safety and places extremely high demands on the performance stability and long-term reliability of materials. Every bridge case undertaken by Qinglong Group has undergone rigorous calculation, strict testing, and the test of time, earning us the long-term trust of clients in the infrastructure sector.