Watering Maintenance Frequency Requirements and Key Points of Scientific Curing for GRC Panels

Scientific curing of GRC panels is a dual guarantee of architectural aesthetics and structural safety. With 28 years of industry experience, we can tell you: the correct watering frequency and curing techniques can extend the service life of GRC components by more than 30%.

As an industry leader with 28 years of deep expertise in UHPC/GRC/GRG/GRP materials, Qinglong Group fully understands the decisive impact that curing—from production through post-installation—has on the final quality of GRC panels (glass fiber reinforced concrete). Whether it is the irregular curtain walls of grand theaters, the exterior wall cladding panels of commercial complexes, or the artistic components of landscape gardens, scientific watering maintenance is the key to ensuring GRC materials deliver their advantages of lightweight high strength and durability. Drawing on Qinglong's full-chain service experience, this article details the core requirements of GRC panel watering maintenance and the key points of scientific curing, providing professional guidance for designers, owners, and contractors.

Watering Maintenance Frequency Standards for GRC Panels: Refined Management from Initial Setting to Final Forming

Watering maintenance of GRC panels must follow the principle of "staged, differentiated" management, dynamically adjusted according to the component's environment and curing stage. During the production stage, freshly cast GRC components should enter the curing chamber immediately after demolding, maintaining a relative humidity of ≥90%, with watering 3-4 times daily for the first 7 days to ensure complete cement hydration. For GRC cladding panels installed outdoors, watering is required twice daily for the first two weeks (9 a.m. and 5 p.m.), then 1-2 times per week for one month. Especially in high-temperature, dry, or windy environments, moisture-retention film should be used to reduce water evaporation and prevent surface cracking. The curing workshop at Qinglong's Nanning production base adopts an intelligent sprinkler system that automatically adjusts watering frequency via temperature and humidity sensors, ensuring a component strength compliance rate exceeding 99%.

Four Core Points of Scientific Curing: From Material Properties to Environmental Adaptation

1. Water Quality and Temperature Control: Watering must use clean, impurity-free tap water or soft water, with the temperature difference between the water and the GRC panel surface not exceeding 10°C to avoid internal stress concentration caused by thermal shock. When undertaking projects such as the Dongguan Women and Children's Activity Center, Qinglong strictly enforces water quality testing, ensuring the curing water has a pH value between 6 and 8 and preventing salt and alkali substances from corroding the glass fibers.

2. Balancing Curing Coverage and Ventilation: After watering, component surfaces must be covered with breathable moisture-retention fabric to keep them moist while avoiding water pooling. For large GRC curtain wall panels, Qinglong innovatively employs a combined "spraying + covering" technique; in the Nanjing Road Century Plaza renovation project, drone inspections ensured that every area of the curved components met curing standards.

3. Environmental Adaptation Adjustments: In cold northern regions, antifreeze measures must be taken in winter; when temperatures fall below 5°C, watering should stop and thermal insulation curing should be used instead. In the rainy season in southern regions, ventilation must be strengthened to prevent mold growth. For its overseas project in Saudi Arabia, Qinglong developed a curing solution combining watering during cooler nighttime hours with reflective film covering, effectively solving the problem of rapid water loss in high temperatures.

4. Strength Monitoring During the Curing Period: The surface hardness of GRC panels should be tested regularly with a rebound hammer to ensure the 7-day strength reaches over 70% of the design value and the 28-day strength meets the standard. Qinglong's laboratory is equipped with fully automatic compression testing machines that track strength changes in real time during the curing process, providing projects with data-driven curing reports.

Full Lifecycle Curing: Qinglong's "30% Production, 70% Curing" Philosophy

As a national high-tech enterprise and a participating developer of the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC), Qinglong has always emphasized that curing is the "last mile" of GRC panel quality control. From presetting curing plans at the detailed design stage to regular maintenance after construction and installation (such as checking sealant aging and repairing minor cracks before each rainy season), Qinglong has established a curing service system covering the entire product lifecycle. For example, in cooperation with real estate groups such as Poly and Vanke, Qinglong provides not only GRC components but also full-chain solutions including curing guidance, problem diagnosis, and emergency response—a vivid practice of its mission to "create beautiful architecture."

Scientific watering maintenance and curing techniques are the prerequisite for GRC materials to achieve their advantages of "lightweight high strength, design freedom, and durable safety." Choosing a GRC manufacturer with full-chain service capabilities, such as Qinglong Group with 28 years of experience, not only delivers high-quality customized products but also professional curing technical support, making every GRC panel a perfect combination of architectural aesthetics and structural safety.