Do GRC Manufacturer Products Crack Easily? Crack-Resistance Technology and Qinglong Group's Durability Guarantee

Whether GRC products are prone to cracking depends on the comprehensive control of five major factors: "material mix ratio, production process, curing conditions, design detailing, and installation quality." High-quality GRC can effectively avoid cracking through low-shrinkage mix ratios, uniform fiber reinforcement, scientific curing, and sound structural design. Through 28 years of technical accumulation, Qinglong Group has developed an anti-cracking system: shrinkage-compensating technology (with expansion agents added) keeps the drying shrinkage rate at ≤0.08%; robotic spraying ensures three-dimensional random fiber distribution (fiber volume content of 3-5%); steam curing (80℃×12h) reduces early plastic cracks; the design avoids stress concentration, with buffer layers set at panel joints. In the roofing project of the Hainan International Convention and Exhibition Center, 120,000 square meters of GRC panels have withstood ten years of thermal expansion and contraction and typhoon exposure without a single structural crack. Cracking is not inevitable—it is controllable and preventable.

Material Optimization Is the Foundation of Crack Resistance

Low water-binder ratio (0.32-0.36) improves density; silica fume addition reduces porosity; fibers (alkali-resistant glass fibers) bridge micro-cracks. Through testing, Qinglong optimizes the mix ratio to give the material micro-expansion properties that compensate for shrinkage.

Process Control Is the Key Link

Thorough mixing prevents fiber clumping; uniform spraying avoids delamination; vacuum dewatering increases density. We use automated production lines with precise control of process parameters to eliminate human error.

Scientific Curing Prevents Early Defects

Prompt covering for moisture retention after final setting prevents water-loss drying shrinkage; steam curing promotes strength development and reduces thermal cracks. Qinglong has standard curing procedures, supervised and implemented by dedicated personnel.

Design and Installation Are the Later-Stage Guarantee

Reasonable joint spacing allows for thermal movement; flexible nodes are set at connection points; forceful pulling and prying are avoided during installation. We provide detailed design, optimized detailing, and construction guidance to prevent problems before they occur.

Therefore, by choosing a manufacturer with solid technical expertise, cracking can be avoided. With systematic anti-cracking solutions, Qinglong Group ensures its products stay as good as new over time.