Analysis of Key Risks and Response Strategies in Mass UHPC Construction

The refined presentation of architectural decoration depends on the perfect combination of materials and craftsmanship. As an important element in modern architecture that combines aesthetics with functionality, the installation quality of GRC components directly affects the overall building quality. However, honeycombing and pitted surfaces, a common surface defect after GRC component installation, not only affect the visual effect but may also conceal structural hazards. As an industry leader with 28 years of deep expertise in the UHPC/GRC/GRG/GRP materials field, Qinglong Group draws on its full-chain technical experience—from material properties and production processes to construction management—to thoroughly analyze the causes of honeycombing and pitted surfaces in GRC components and provide systematic solutions, offering professional technical reference for designers, owners, and contractors.

Analysis of the Core Causes of Honeycombing and Pitted Surfaces in GRC Components

The formation of honeycombing and pitted surfaces results from the interplay of material properties and construction techniques, and must be traced back to the source. At the material preparation stage, an imbalanced cement-to-glass-fiber ratio or unreasonable sand gradation can easily lead to insufficient concrete flowability, making it difficult for air bubbles to escape during vibration. During production, insufficient mold surface smoothness or uneven application of release agent causes the component surface to adhere to the mold, forming pitted surfaces. During installation, inadequate base preparation, incomplete grouting, or insufficient vibration force can trigger honeycomb-like voids. When participating in drafting the Technical Standard for Building Applications of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018), Qinglong Group found that more than 60% of surface defects stem from neglecting material properties during construction, especially in the installation of irregularly shaped components, where traditional manual vibration tends to leave blind spots.

Full-Chain Solutions: Quality Control from Production to Installation

In response to these causes, Qinglong Group has built a trinity solution of 'material optimization - precision production control - standardized construction.' On the material side, the company adopts its independently developed composite formula of low-alkali cement and alkali-resistant glass fiber; by adjusting the water-cement ratio and admixture proportions, concrete flowability is raised to above 250mm, ensuring slurry filling performance. In production, BIM technology is introduced for precision mold design, combined with an automated vibration platform (frequency 50-60Hz) and a vacuum degassing process, raising the bubble removal rate to 98%. This technology was successfully applied in the Nanjing Road Century Plaza renovation project, achieving zero honeycomb defects in light-transmitting concrete components. At the installation stage, the company implements the '3D base scanning - modular hoisting - pressure grouting' process, using laser positioning to ensure component fitting accuracy of ≤2mm, together with Qinglong's patented non-shrink grouting material (compressive strength ≥60MPa) to eliminate voids.

Industry Experience Empowerment: Practical Validation of 28 Years of Technical Accumulation

As a national high-tech enterprise and a participant in setting GRC industry standards, Qinglong Group has transformed 28 years of engineering experience into standardized solutions. In the Dongguan Women and Children's Activity Center project, measures such as dynamic monitoring of ready-mixed concrete slump (controlled at 180±20mm) and mold temperature gradient management (temperature difference ≤5℃) achieved a 100% first-time acceptance rate for GRC decorative lines. In overseas projects, such as a landmark building in Malaysia, the company innovatively adopted the 'layered vibration + infrared drying' process to cope with high-temperature, high-humidity environments, effectively resolving surface defect problems in hot and humid climates. These cases confirm the critical role of full-chain control in improving GRC component quality and demonstrate Qinglong's technical strength as a UHPC/GRC/GRG/GRP custom manufacturer.

Preventing and controlling honeycombing and pitted surfaces is essentially a dual test of materials science and engineering management. Guided by its mission of 'creating beautiful architecture,' Qinglong Group transforms technical advantages into project value through material innovation, process upgrades, and standardized construction. In the future, with the implementation of new standards such as the General Technical Conditions for Non-Load-Bearing Components of Ultra-High Performance Concrete (UHPC), quality control of GRC components will move toward higher precision, and Qinglong will continue to provide more reliable material solutions for the architectural decoration industry under the philosophy of 'meticulous attention to detail and the constant pursuit of excellence.'