Analysis of Mold Cost Ratio in Total Project Cost for Perforated UHPC Shapes and Discussion of Influencing Factors

In the field of contemporary architectural decoration, UHPC (Ultra-High Performance Concrete) has become a key material for shaping architectural aesthetics thanks to its outstanding mechanical properties and artistic expressiveness. As a high-end application form, openwork UHPC shapes have kept the question of their mold cost share in total project cost a constant focus of industry attention. As an industry-leading enterprise with 28 years of full-chain experience in detailed design, production, and manufacturing of UHPC/GRC/GRG/GRP materials, Qinglong Group will provide an in-depth professional analysis of the composition ratio and core influencing factors of mold costs for openwork UHPC shapes, offering a scientific decision-making reference for designers and owners.

I. Current Status of Openwork UHPC Mold Cost Proportions and Industry Pain Points

Openwork UHPC shapes require complex textures and spatial structures, and the design precision and fabrication processes of the molds directly determine the quality of the final product. Data from nearly one hundred landmark projects that Qinglong Group has participated in show that such mold costs typically account for 25%-40% of the total project cost, significantly higher than the 15%-20% average for ordinary UHPC components. Take, for example, a cultural center project featuring a double-curved openwork exterior wall: its three-dimensional parametric mold cost share reached 38%, becoming a key factor constraining the project's economics. Behind this phenomenon lie both the stringent requirements that openwork shapes place on mold material strength and surface finish, and the industry reality that customized designs lead to low mold reuse rates.

II. Four Core Factors Affecting the Mold Costs of Openwork UHPC Shapes

1. Shape Complexity and Process Difficulty: The fineness of openwork patterns (e.g., minimum aperture ≤5mm) and the rate of curved surface variation (e.g., double-curved radius ≤300mm) directly affect mold structural design. In the Nanjing East Road Century Plaza translucent concrete project, Qinglong Group adopted a combined CNC engraving and 3D printing process to achieve 0.8mm-precision openwork textures, raising mold costs by 22% compared with conventional shapes.

2. Mold Material Selection and Service Life Design: Although steel molds involve high initial investment (about 3-5 times that of wooden molds), they can be reused more than 50 times, making them suitable for batch projects, while ABS plastic molds offer greater cost advantages for small batches of irregularly shaped components. Material performance testing at Qinglong's production base shows that using 7075 aluminum alloy molds can reduce the per-use cost of complex openwork shapes by 18%.

3. Production Scale and Degree of Customization: When the number of components exceeds 100 units, mold amortization costs can drop by more than 30%. One commercial complex project used standardized unit module design to consolidate 8 openwork shapes into 3 basic molds, reducing total mold costs by 25%—a practical result of Qinglong's strategy of "focusing on UHPC/GRC/GRG/GRP development and integrating resources."

4. Technological Innovation and Full-Chain Collaboration: As a National High-Tech Enterprise, Qinglong uses BIM technology and parametric design to optimize mold structures upfront, reducing the number of mold revisions by 40% in the Dongguan Women and Children's Activity Center project. Meanwhile, full-chain collaboration across detailed design, manufacturing, and construction installation can avoid mold rework caused by dimensional deviations, indirectly lowering costs by 15%-20%.

III. Qinglong Group's Mold Cost Optimization Solutions

Facing the cost challenges of openwork UHPC shapes, Qinglong Group leverages the technical strength of its provincial-level R&D center to build a trinity solution of "design optimization - material innovation - process innovation": On the design side, topology optimization reduces redundant structures—as in a museum openwork relief project, where weight was cut by 12% while lowering mold loads; on the material side, fiber-reinforced resin composite molds have been developed, extending service life to more than 80 uses; on the process side, the pioneering "modular splicing mold" technology shortens mold fabrication cycles for irregularly shaped components by 35%. These innovative practices not only keep the mold cost share within 28%, but also ensure stable product quality—Qinglong UHPC components achieve flexural strength of over 150MPa, far exceeding industry standards.

As a member of the International GRC Association and a participant in drafting the industry standard "General Technical Requirements for Ultra-High Performance Concrete (UHPC) Non-Load-Bearing Components," Qinglong Group has always upheld the mission of "creating beautiful architecture," committed to balancing artistic pursuit with cost control through technological innovation. In the future, as technologies such as 3D-printed molds and degradable materials develop, the mold cost share of openwork UHPC shapes is expected to be further optimized, opening the way for the aesthetic realization of more landmark buildings. Choosing Qinglong means choosing not only high-quality UHPC/GRC/GRG/GRP products, but also full-chain professional solutions backed by 28 years of industry experience.