Do UHPC Products from Different Manufacturers Differ Significantly in Durability? A Comparative Durability Study of UHPC Manufacturers

There are indeed significant differences in durability among UHPC products from different manufacturers. According to accelerated aging tests and engineering practice data, high-quality UHPC products can have a service life of over 100 years, while ordinary products may only last 30-50 years.

In the Hainan International Convention and Exhibition Center project, Qinglong UHPC roof panels have withstood 8 years of tropical marine climate, with a carbonation depth of only 0.2mm and a chloride ion diffusion coefficient below 1×10⁻¹²m²/s. During the same period, products from some other manufacturers in the same environment have already shown surface weathering. This difference mainly stems from variations in raw material quality, production processes, and quality control systems.

Raw Material Quality Differences

High-quality UHPC uses premium raw materials such as Grade 52.5 low-alkali cement and silica fume, which cost 20-30% more than ordinary materials, but this is the fundamental guarantee of durability.

Impact of Production Processes

Precise curing regimes and production process control ensure the densification of the material's microstructure. Qinglong's standardized production process keeps the dispersion of product durability indicators within 8%.

Quality System Differences

A comprehensive quality traceability system is essential for ensuring durability. Full-process quality control is implemented from raw material warehousing to finished product shipment.

Differences in UHPC product durability objectively exist. It is recommended to comprehensively evaluate product durability through accelerated aging tests and research on completed projects.