Water Curing Frequency Requirements for GRC Panels and Scientific Curing Methods Explained

Scientific curing is the "guardian" of GRC panel lifespan. With 28 years of industry experience, we can tell you: the correct watering frequency and curing methods can extend the lifespan of GRC components by more than 30%.

In high-end projects such as grand theaters, commercial complexes, and landmark buildings, GRC (Glass Fiber Reinforced Concrete) has become the preferred material for exterior wall decoration thanks to its advantages of light weight, high strength, and rich styling possibilities. However, many projects have suffered problems such as GRC panel cracking and strength loss due to neglect of later-stage curing. As Qinglong Group, with 28 years of full-chain experience in UHPC/GRC/GRG/GRP, today we systematically explain the core requirements and scientific curing solutions for GRC panel watering maintenance, helping projects fulfill the quality promise of "century-lasting buildings".

Watering Frequency Standards for GRC Panels: Dual-Dimension Control by Environment and Stage

Watering curing of GRC panels must be dynamically adjusted according to construction stages and environmental conditions. During the initial setting stage (24-48 hours after pouring), the surface should be kept moist: in hot summers, water once every 2 hours; in winter, this can be extended to once every 4 hours, ensuring steady growth of concrete strength. After entering the curing period, the number of daily waterings can be reduced to 2-3 times, but the surface must remain moist at all times to avoid shrinkage cracks caused by alternating wet and dry conditions. Notably, when ambient humidity falls below 60% or temperature exceeds 35℃, moisture retention should be enhanced by covering with films or using misting systems—a detail already verified in the 600,000 ㎡ capacity project at Qinglong's Nanning production base.

The Four-Step Scientific Curing Method: A Curing System from Basic to Advanced

The "Four-Step Curing Method" developed by Qinglong Group in accordance with the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018) has become an industry benchmark. Step one, "initial setting moisture retention": use special curing agents and geotextile covering to lock in the internal moisture of the concrete; Step two, "strength enhancement": achieve precise temperature control and moisture retention through intelligent sprinkler systems during the 7-day curing period; Step three, "defect repair": treat fine cracks with epoxy resin injection; Step four, "long-term monitoring": use BIM technology to establish curing records, regularly documenting surface humidity and strength changes. After a landmark project applied this method, the 28-day compressive strength of GRC panels increased to 45MPa, far exceeding the industry standard of 30MPa.

Analysis of Common Curing Mistakes: Avoid These "Hidden Killers"

Many projects exhibit the phenomenon of "emphasizing construction while neglecting curing". Common mistakes include: insufficient watering duration (less than 7 days), excessive water volume causing surface sanding, and curing interruptions resulting in strength discontinuities. Qinglong's technical team found in overseas projects in Southeast Asia that under tropical high-temperature conditions, relying solely on natural curing makes GRC panels prone to carbonation, whereas a combined solution of "daytime shading + nighttime watering" can improve component durability by 40%. In addition, using neutral water with a pH value above 7 for watering can effectively prevent corrosion of metal embedded parts—a detail Qinglong emphasized when participating in drafting the General Technical Conditions for Ultra-High Performance Concrete (UHPC) Non-Load-Bearing Components.

As a national high-tech enterprise and a drafting unit of GRC industry standards, Qinglong Group has always taken "creating beautiful architecture" as its mission, transforming 28 years of engineering experience into replicable curing solutions. Whether it is the cost control that real estate developers care about, or the durability of decorative effects that designers value, scientific GRC curing is the key to maximizing project value. Only by choosing a manufacturer with full-chain capabilities in detailed design, production and manufacturing, construction and installation, and after-sales maintenance can GRC materials truly become a perfect combination of architectural aesthetics and structural safety.