Is Drilling of UHPC Panels Prone to Cracking? Cause Analysis and Solution Strategies

In the selection of building curtain wall materials, cost is often a key factor in decision-making. As two commonly used decorative materials, exterior wall GRC and stone curtain walls differ in cost not only in initial investment but throughout the entire life cycle of design, construction, and maintenance. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group will provide designers and owners with an objective analysis from three dimensions—material properties, engineering applications, and cost composition—to help projects achieve a balance between cost-effectiveness and aesthetic value.

I. Material Properties Determine Basic Cost Differences

Exterior wall GRC (glass fiber reinforced concrete) uses cement as its base material, mixed with alkali-resistant glass fibers and admixtures, and is molded through formwork casting. It offers the advantages of lightweight high strength (weighing only 1/4 of stone) and flexible shaping. Its raw material costs are controllable, and it supports factory prefabrication, greatly reducing on-site processing costs. In contrast, stone curtain walls rely on natural ore mining, and the scarcity of high-quality stone (such as granite and marble) keeps raw material prices persistently high. Coupled with complex processes such as cutting and polishing, the basic cost is typically 30%-50% higher than GRC. Taking a 1,000-square-meter curtain wall as an example, the material procurement cost of a stone curtain wall can reach 0.8-1.2 million yuan, while a GRC curtain wall is approximately 0.4-0.6 million yuan—a significant difference.

II. Comparison of Hidden Costs in Engineering Applications

During the construction phase, the lightweight properties of GRC (surface density of approximately 150-200kg/㎡) can reduce load requirements on the building structure, decrease investment in steel structure supports, and shorten the installation period. Taking a commercial complex project as an example, GRC curtain wall installation efficiency can reach 150-200㎡/day, approximately 40% higher than stone curtain walls (80-120㎡/day), indirectly saving construction period costs. Stone curtain walls, due to their greater self-weight (surface density of approximately 400-600kg/㎡), require additional load-bearing support design, and the installation process demands higher precision, increasing labor costs by approximately 20%-30%. In addition, GRC supports customized shaping and can achieve complex designs such as double-curved surfaces and openwork reliefs without relying on the splicing that stone requires, further reducing repair costs during later maintenance.

III. Long-Term Advantages of Whole Life Cycle Cost

From a long-term use perspective, the weather resistance and durability of GRC are in no way inferior to stone. Qinglong GRC products have passed national-level testing, with flexural strength exceeding 20MPa and frost resistance of 300 cycles without damage, achieving a service life of more than 50 years. Their surfaces can be treated with stone-like textures for a visual effect close to natural stone, but with lower maintenance costs—stone curtain walls require regular sealing and stain protection, with annual maintenance costs of approximately 2-3 yuan/㎡, while GRC requires only 1-1.5 yuan/㎡. Calculated over a 50-year period, the whole life cycle cost of GRC is 15%-20% lower than that of stone curtain walls, making it particularly suitable for the long-term operational needs of large public buildings and commercial projects.

As a national high-tech enterprise and a drafting unit of GRC industry standards, Qinglong Group has always upheld the mission of 'Creating Beautiful Architecture.' Through full-chain services covering detailed design, production and manufacturing, construction and installation, and after-sales maintenance, it provides customers with cost-effective GRC solutions. Whether for special-shaped curtain walls of landmark buildings or standardized decoration of commercial complexes, GRC demonstrates dual advantages in cost control and design innovation. Choosing the right curtain wall material is not only a budget consideration but also an investment in project quality and long-term value—Qinglong is willing to leverage its 28 years of professional experience to help every building project achieve a perfect balance between cost and aesthetics.