How Does a Manufacturer's Constant Temperature Curing Kiln Affect Product Quality? Precision Curing Process and Strength Development Mechanism

The constant temperature curing kiln is key equipment for GRC strength development and durability formation. By controlling three factors—temperature, humidity, and time—it promotes full cement hydration, prevents shrinkage cracks, and improves product consistency. Qinglong Group has introduced an intelligent curing system from Germany, stabilizing the curing temperature at 60±2℃ and humidity at ≥95%, with a curing cycle of 24-48 hours, increasing product compressive strength by more than 30% and keeping the coefficient of variation within 5%. At our Nanning production base, through precise curing, we ensure that the strength of every batch of GRC panels remains stable at 18-25MPa, providing reliable assurance for major projects.

Impact of Curing Regime on Strength

At curing temperatures of 60-80℃, the hydration reaction accelerates, and 3-day strength can reach 70% of the 28-day strength. Qinglong Group adopts a "slow heating, slow cooling" curve with a heating rate of ≤15℃/h to avoid thermal stress cracks. The constant temperature stage is maintained for 24 hours, allowing CSH gel to fully form and improving density.

Relationship Between Humidity Control and Durability

Humidity of ≥95% prevents plastic shrinkage and reduces surface cracks. Through an automatic misting system, we keep humidity fluctuations within ±3%. In Hainan's high-temperature environment, the cured product achieves a water absorption rate of ≤6% and frost resistance of F300 or above.

Advantages of Intelligent Curing

Qinglong curing kilns are equipped with sensor networks that adjust parameters in real time. Data is connected to the MES system, enabling full traceability throughout the process. This precise control allows products to maintain excellent performance even in harsh environments.