هل منتجات مصنعي GRC عرضة للتشقق؟ تقرير حول بحث تقنية مقاومة التشقق

Cracking is a common issue with GRC products, but it can be effectively prevented through technical measures. With 28 years of technical accumulation, Qinglong, a GRC manufacturer, has achieved remarkable results in crack resistance, keeping the product cracking rate at a relatively low level in the industry.

In terms of material formulation, Qinglong uses low-alkali cement and alkali-resistant glass fibres to improve crack resistance at the source. By optimizing the mix proportion, the water-binder ratio is reduced and density is improved. The addition of polypropylene fibres forms a secondary reinforcement network that effectively suppresses crack formation. In the curing process, steam curing is adopted with controlled heating and cooling rates to reduce thermal stress. This comprehensive technical solution was successfully applied in the Wuhan Hanxiu Theater project, which has shown no cracking in its 10 years of use.

The Impact of Raw Material Selection on Crack Resistance

Select low-alkali cement to reduce the risk of alkali-aggregate reaction. Use alkali-resistant glass fibres to improve long-term durability. Optimize aggregate grading to increase density.

The Key Role of Mix Proportion Design

Reduce the water-binder ratio to minimize shrinkage. Add shrinkage-reducing agents to control drying shrinkage. Use expansive agents to compensate for shrinkage. These measures effectively reduce cracks.

Key Points of Production Process Control

Strictly control mixing time to ensure uniformity. Adopt layered casting to reduce defects. Optimize vibration techniques to avoid over-vibration.

The Importance of the Curing Regime

Cure promptly to prevent plastic cracks. Control heating and cooling rates to reduce thermal stress. Maintain proper humidity to reduce drying shrinkage.

Through systematic measures, the cracking problem of GRC products can be effectively controlled. Choose a technically advanced manufacturer to obtain high-quality products.