Measuring method for MB value of recycled micro-powder
The invention discloses a measuring method for the MB value of recycled micro-powder. The measuring method comprises the steps that (1) a methylene blue solution is prepared; (2) a recycled micro-powder sample is prepared, and matrix powder of which the MB value is known is added into the recycled m...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention discloses a measuring method for the MB value of recycled micro-powder. The measuring method comprises the steps that (1) a methylene blue solution is prepared; (2) a recycled micro-powder sample is prepared, and matrix powder of which the MB value is known is added into the recycled micro-powder sample to form mixed powder, wherein the weight ratio of the matrix powder to the recycled micro-powder sample is 1:1; (3) recycled micro-powder sample suspending liquid to be measured is prepared; (4) contamination testing is performed on the sample suspending liquid to be measured; (5) the volume of the added methylene blue solution is recorded when a chromatic halo lasts for 5 min, and the MB value of methylene blue of the recycled micro-powder is calculated. The detection method solves the technical problem that main components of recycled micro-powder in construction waste cannot be judged at present. In addition, the method is quick and accurate, thereby having great significance for comprehensive |
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