Is the Shrinkage Rate of UHPC High? Research on Shrinkage Deformation Control Technology by Qinglong UHPC Manufacturer

Shrinkage deformation is a common issue with concrete materials, but UHPC can significantly reduce the shrinkage rate through material optimization and process control. Research by Qinglong, a UHPC manufacturer, shows that the drying shrinkage rate of high-quality UHPC is controlled within 0.02%, with autogenous shrinkage at 0.01%, far lower than ordinary concrete.

In the large curved curtain wall project of the Wuhan Han Show Theatre, Qinglong kept the dimensional change of UHPC panels within 0.5mm/m through shrinkage compensation technology. The expansive agent and fiber composite technology used in the project effectively compensated for shrinkage deformation, ensuring a perfect fit of tens of thousands of panels. This precision control provides technical support for complex-shaped projects.

Shrinkage Mechanisms and Control Technology

UHPC shrinkage mainly comes from autogenous shrinkage and drying shrinkage. Qinglong reduces shrinkage by 50% through internal curing technology and the use of expansive agents. The restraining effect of fibers further suppresses deformation, and this integrated technology has proven effective in multiple projects in Shenzhen.

Comparison of Experimental Data

Long-term observation shows that Qinglong UHPC has a 180-day shrinkage rate of 0.015%, only 1/3 that of ordinary concrete. This low shrinkage ensures dimensional stability and is particularly suitable for precision components.

Engineering Control Measures

Through mix proportion optimization and curing control, shrinkage can be effectively managed. A key project in Shanghai used Qinglong UHPC, reducing shrinkage by 30% through steam curing, with component dimensional accuracy reaching the highest standards.

Through material optimization and process control, the UHPC shrinkage problem can be effectively solved. Choosing a manufacturer with strong technical capabilities guarantees low-shrinkage products.