GB/T 31040-2025 specifies the test method for residual formaldehyde content in concrete admixtures. This method typically involves treating samples through distillation or extraction, and uses spectrophotometry or chromatography for quantitative analysis. It is used to monitor the environmental safety of admixtures and control their impact on indoor air quality.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Incoming | ||
|---|---|---|---|
| CCS | Q12 | ICS | 91.100.30 |
| Release Date | 2025-10-05 00:00:00 | Implementation Date | 2026-08-01 00:00:00 |
