GB/T 45778-2025 specifies the test method for the chemical shrinkage of cement paste. This method measures the macroscopic volume shrinkage resulting from the reduction in absolute volume during the hardening reaction of cement with water under conditions free from external restraint. It provides critical data for studying the cement hydration process and evaluating the crack resistance of materials.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active | ||
|---|---|---|---|
| CCS | Q11 | ICS | 91.100.10 |
| Release Date | 2025-06-30 00:00:00 | Implementation Date | 2026-01-01 00:00:00 |