What to Consider When Storing UHPC Components in Low-Temperature Environments? Freeze and Moisture Protection and Qinglong Group Storage Standards

Storing UHPC components in low-temperature environments requires focusing on three major risks: freeze-thaw damage, humidity changes, and deformation cracking. The storage temperature should be maintained between 5-35°C, with relative humidity ≤70%. In its projects in northern China, Qinglong Group has established a storage scheme of "elevated isolation + rain-proof covering + regular inspection". Components are stacked in no more than 6 layers, with the bottom timber supports at least 200mm above the ground, and covered with waterproof canvas to prevent ice formation and water absorption. In a winter construction project in Shenyang, by building an insulated shed (internal temperature ≥5°C), components were stored for 3 months without freeze damage, achieving 100% strength retention.

Freeze Protection Measures and Temperature Monitoring

When the ambient temperature is below 0°C, the moisture content of components must be ≤6% to prevent ice expansion damage. We use heat blowers to maintain the temperature inside the shed and record temperature and humidity every 4 hours. Components may only be stored outdoors after the curing period is complete.

Moisture Protection and Deformation Control

When humidity exceeds 80%, dehumidifier intervention is required. Components should be laid flat to avoid warping. Inspect regularly for cracks and address them promptly.

Storage Period and Turnover Management

The storage period should not exceed 6 months, following a first-in, first-out principle. Qinglong Group's standardized management ensures zero-damage delivery of components.