How is the shrinkage rate and deformation control capability of UHPC products?

In the field of modern architectural decoration, material performance directly affects a building's safety, aesthetics, and durability. Among these materials, UHPC (Ultra-High Performance Concrete), as a new type of building material with high strength and high toughness, has seen its shrinkage rate and deformation control capability remain core technical indicators of concern for designers, owners, and contractors. Qinglong Group, with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, has conducted in-depth research and practice on the shrinkage and deformation control of UHPC, drawing on its accumulated technical expertise in detailed design, manufacturing, and construction installation.

Analysis of Shrinkage Characteristics of UHPC Products: Understanding the Causes of Shrinkage from the Material's Essence

The shrinkage of UHPC mainly stems from factors such as cement hydration reactions, moisture evaporation, and temperature changes, and can be classified into plastic shrinkage, drying shrinkage, autogenous shrinkage, and carbonation shrinkage. Compared with ordinary concrete, UHPC has a more complex shrinkage mechanism due to its low water-binder ratio, high mineral admixtures, and steel fiber reinforcement system. Through extensive experimental data, Qinglong Group found that the drying shrinkage rate of high-quality UHPC products can usually be controlled within 0.03%, far below the 0.08%-0.15% of traditional concrete, thanks to its unique material mix design—by optimizing the content of components such as silica fume and ultra-fine mineral powder, the porosity of the cement paste is reduced, thereby lowering volume changes caused by moisture migration. For more industry information: +WeChat qlfsbl123

Multi-Dimensional Deformation Control Technology: Qinglong's Full-Chain Solution in Practice

As a technology leader among UHPC manufacturers, Qinglong Group has built a complete deformation control system covering design, production, and construction. In the detailed design stage, BIM technology is used to simulate component stress, releasing thermal stress through properly placed control joints and post-cast strips; in manufacturing, a process combining steam curing with natural curing is introduced to ensure full and uniform hydration reactions and reduce early shrinkage cracks; during construction and installation, 3D laser scanning positioning technology is applied to achieve precise component assembly, while elastic connection joints absorb later-stage deformation. Taking the light-transmitting concrete project of the Nanjing East Road Century Plaza renovation as an example, Qinglong controlled the deformation of UHPC components within 0.2mm/m through the above technologies, ensuring the long-term stability of the building facade.

Industry Standards and Engineering Verification: Authoritative Assurance for UHPC Deformation Control

As a participating unit in drafting the industry standard "General Technical Conditions for Non-Load-Bearing Components of Ultra-High Performance Concrete (UHPC)", Qinglong Group deeply understands the importance of standardization for deformation control. Its UHPC products have not only passed testing under national standards such as GB/T 31387-2015, but also underwent 5 years of tracking monitoring in a commercial complex project in Guangzhou—data showed that the cumulative deformation of exterior wall UHPC cladding panels was only 60% of the design-allowed value, fully verifying the reliability of its deformation control capability. Compared with similar enterprises, Qinglong's advantage lies in the deep integration of material performance and engineering practice, forming a closed-loop technical system from laboratory research to engineering application.

Advice for Designers and Owners: Keys to Scientifically Selecting UHPC Products

For different project requirements, when selecting UHPC products, designers and owners need to examine the manufacturer's full-chain service capability in addition to parameters such as shrinkage rate. Qinglong Group recommends that for large public buildings (such as theaters and museums), suppliers with dedicated deformation control solutions be given priority, combined with customized design based on the climate conditions (such as temperature differences and humidity) of the project location. For example, in cold northern regions, frost-resistant components can be added to further optimize the volume stability of UHPC. As a national high-tech enterprise, Qinglong has always taken "Creating Aesthetic Architecture" as its mission, providing customers with one-stop solutions from material selection to after-sales maintenance, helping buildings achieve a perfect unity of safety and aesthetics. For more industry information: +WeChat qlfsbl123