Can UHPC Shapes Achieve Gradient Color Effects? Techniques and Durability Assurance

The color of UHPC shapes can fully achieve gradient effects. Through three core processes—"integral coloring, surface coating, and mold zone coloring"—monochromatic gradients, multicolor gradients, and texture gradients can all be realized. Projects such as Qinglong's Nanning Fengjingwan and Sanya Festival Plaza feature natural gradient effects, with a fading rate of ≤5% over 10 years.

I. Core Processes for Achieving Gradient Effects

Different processes suit different gradient requirements. Integral coloring: inorganic mineral pigments are added by zone in design-specified proportions during production, and slurry mixing achieves natural gradients; Qinglong's pigment dosage is 3%-8%, with natural and seamless gradient transitions. Surface coating: after UHPC forming, different colored coatings are sprayed in layers with a spray gun, and gradients are achieved by controlling spray thickness; Qinglong uses fluorocarbon gradient paint with a coating thickness of 50-80μm. Mold zone coloring: pigments are pre-applied in the mold according to gradient zones and bond with the UHPC after casting, suitable for dual texture+color gradients; Qinglong's mold zone coloring precision is ±5mm, with gradients and textures presented in sync. Digital printing: complex gradient patterns use digital printing technology with precision up to 150dpi; Qinglong's digital printing gradient reproduction rate is 98%, suitable for artistic shapes.

II. Durability Assurance Technologies for Gradient Effects

Technical measures ensure gradients do not fade or peel. Pigment selection: inorganic mineral pigments (iron oxides, titanium dioxide) are used, resistant to UV rays and acid/alkali; Qinglong's pigments have a weather resistance rating of ≥25 years with no fading risk. Coating protection: after surface coating, a fluorocarbon varnish is applied to enhance UV and anti-aging resistance; Qinglong's fluorocarbon varnish has a fluorine content of ≥25% with no cracking after 1000 hours of anti-aging testing. Material compatibility: compatibility testing of pigments/coatings with the UHPC substrate prevents blistering and peeling; Qinglong's compatibility test pass rate is 100%. Production process: high-pressure vibration ensures uniform pigment distribution; Qinglong's vibration pressure is ≥0.6MPa, with uniform gradient transitions and no color-difference spots.

III. Qinglong Project Practice and Technical Advantages

Project cases verify gradient effects and durability. Nanning Fengjingwan French Neoclassical UHPC moldings: integral coloring achieves a cream-white to light-yellow gradient, with a fading rate of only 3% after 10 years of use and the color still soft; Sanya Festival Plaza GRC European-style components (with matching UHPC gradient decorations): surface coating achieves a red-to-orange gradient, with no obvious fading after 8 years in a coastal high-UV environment; Shanghai Astronomy Museum public art sculpture: mold zone coloring achieves a blue-to-white gradient plus a starry-sky texture, with gradients and textures blending for a strong artistic feel. Technical advantages: any gradient effect can be customized, with 1:1 sample confirmation provided, and Qinglong's gradient reproduction rate is ≥95%. Quality commitment: gradient colors are warranted for 10-15 years, with free repair or replacement if the fading rate exceeds standards, ensuring long-term aesthetics.