A sieve machine in a laboratory with several seven on top of each other.
The sieve curve of a building material (sand, granules, concrete mix) indicates the silk residue of the dry substance with several seven. In this way a classification can be made, such as fine sand vs. coarse sand.
The following seven are used in the Netherlands:
The percentage of material smaller than 63μm can only be determined by liquid separation techniques. These are the following groups
Based on the sieve curve, many different parameters can be determined, such as:
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