Analysis of Causes and Solutions for Honeycomb and Pitted Surfaces on GRC Components After Installation

Details Determine Quality, Professionalism Builds Reputation — A Full-Chain Solution to the Honeycomb and Pitted Surface Problem of GRC Components

In the field of architectural decoration, GRC (glass fiber reinforced concrete) is widely used in high-end projects such as grand theaters, commercial complexes, and landmark buildings, thanks to its light weight, high strength, and flexible shaping. However, honeycomb and pitted surfaces appearing after installation not only affect aesthetics but may also create structural risks. As an industry-leading enterprise with 28 years of experience in deepened design and construction of UHPC/GRC/GRG/GRP materials, Qinglong Group draws on more than a thousand completed projects to provide an in-depth analysis of the causes of this industry pain point and systematic solutions, covering material properties, production processes, and construction management.

Analysis of the Four Core Causes of Honeycomb and Pitted Surfaces in GRC Components

The formation of honeycomb and pitted surfaces is often the concentrated result of problems at multiple stages. At the material level, an unbalanced GRC slurry mix ratio and insufficient integration between glass fibers and the cement matrix make air bubbles difficult to expel. During production, improper mold surface treatment or deviations in vibration parameters lead to uneven surface compactness of components. Installation accuracy deviations during construction and inadequate later-stage curing further aggravate the appearance of such defects. Through tracking and analyzing more than 300 typical cases, Qinglong's technical team found that 70% of honeycomb and pitted surface problems stem from gaps in the transition between production and construction.

Building a Prevention System Across Material and Process Dimensions

As a national high-tech enterprise, Qinglong Group has established a quality control system at the source. In material formulation, it adopts a self-developed composite process of low-alkali cement and alkali-resistant glass fiber, ensuring slurry fluidity reaches the golden standard of 260mm±5mm; in production, BIM parametric design and automated vibration equipment keep component forming errors within ±2mm. For components with complex shapes, innovative vacuum degassing technology raises the bubble elimination rate to over 98%, fundamentally reducing the risk of honeycomb and pitted surfaces.

Key Control Points at the Construction and Installation Stage

On-site construction is the last mile of quality delivery. Relying on its Grade II professional contracting qualification for building curtain wall engineering, Qinglong has formulated a standardized installation process: 3D laser scanning positioning technology achieves component installation accuracy of ≤1mm; the innovatively developed "dry hanging + grouting" composite anchoring system, combined with dedicated anti-crack mortar, ensures a firm bond with the substrate. Customized curing plans are provided for different climate conditions — an intelligent fog curing system in high-temperature seasons and insulated curing sheds in low-temperature environments — raising the component strength compliance rate to 99.6%.

Qinglong's Full Life-Cycle Service Solution

From deepened design to after-sales maintenance, Qinglong has built a full-chain service system. In the design phase, Rhino+Grasshopper parametric modeling optimizes node construction; RFID chips embedded during production enable quality traceability; the after-sales team provides 24-hour response "diagnosis-repair-reinforcement" services. Taking the Nanjing East Road Century Plaza renovation project as an example, this system successfully resolved the surface defects of extra-large curved GRC components, earning the Silver Award of the AALBORG WHITE Cup UHPC Construction Engineering Innovation Award.

Preventing honeycomb and pitted surfaces tests an enterprise's systematic control over material properties, production processes, and project management. As a contributing editor of the Technical Standard for Architectural Application of Glass Fiber Reinforced Cement (GRC), Qinglong Group has always upheld the philosophy of "meticulousness and the constant pursuit of excellence," providing designers and owners with full-process technical support from concept to realization. Choosing a GRC manufacturer with full-chain service capabilities is key to ensuring project quality — this is not only a responsibility to architectural aesthetics but also a long-term commitment to structural safety.