How to Design the Wind Load Resistance of UHPC Curtain Walls: Analysis of Key Technologies and Engineering Applications

Scientific curing is the "guardian" of GRC board 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 design possibilities. However, many projects suffer problems such as cracking and reduced strength in GRC boards due to neglect of later-stage curing. Qinglong Group, with 28 years of full-chain experience in UHPC/GRC/GRG/GRP, provides you today with a systematic analysis of the core requirements for GRC board water curing and scientific curing solutions, helping projects fulfill the quality commitment of "century-lasting buildings."

Frequency Standards for GRC Board Water Curing: Dual-Dimension Control by Environment and Stage

Water curing of GRC boards must be dynamically adjusted according to the construction stage and environmental conditions. During the initial setting stage (24-48 hours after casting), the surface should be kept moist—in hot summer weather, water once every 2 hours, while in winter the interval can be extended to once every 4 hours—to ensure steady growth of concrete strength. After entering the curing period, daily watering can be reduced to 2-3 times, but the surface must remain moist at all times to prevent shrinkage cracks caused by alternating wetting and drying. Notably, when ambient humidity falls below 60% or the temperature rises above 35°C, moisture retention must be reinforced with film covering or spray systems—a detail already verified in Qinglong's Nanning production base project with a capacity of 600,000 ㎡.

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 Application of Glass Fiber Reinforced Cement (GRC) in Buildings (JGJ/T423-2018) has become an industry benchmark. Step one, "initial setting moisture retention," uses specialized curing agents and geotextile covering to lock in the concrete's internal moisture; step two, "strength enhancement," achieves precise temperature and humidity control through an intelligent sprinkler system during the 7-day curing period; step three, "defect repair," treats fine cracks with epoxy resin injection; step four, "long-term monitoring," uses BIM technology to establish curing records and regularly document surface humidity and strength changes. After one landmark project applied this method, the 28-day compressive strength of its GRC boards rose to 45MPa, far exceeding the industry standard of 30MPa.

Common Curing Misconceptions: Avoid These "Hidden Killers"

Many projects show a tendency to "value construction over curing." Common misconceptions include: insufficient watering duration (less than 7 days), excessive water volume causing surface sanding, and interrupted curing leading to strength discontinuities. Qinglong's technical team found in overseas projects in Southeast Asia that under tropical high-temperature conditions, GRC boards are prone to carbonation if only natural curing is used, whereas a combined approach 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 upheld the mission of "creating aesthetically beautiful buildings," transforming 28 years of engineering experience into replicable curing solutions. Whether it is the cost control that real estate developers care about or the lasting decorative effect 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.