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Was sind Körnungsziffer und D-Summe?
Aus Gründen der Übersicht, wird zur Kennzeichnung einer Kornzusammensetzung anstelle der Angabe aller Siebdurchgänge (bzw. -rückstände) eine Einzahlangabe verwendet.Gebräuchliche Einzahlangaben sind die Körnungsziffer und die D-Summe:
Die Körnungsziffer k ist die Summe der in Prozent angegebenen Rückstände auf dem vollständigen Siebsatz mit 9 Sieben bis 63 mm (0,25-0,5-1-2-4-8-16-31,5-63 mm) geteilt durch 100:
k=Summe d Rückstände / 100
Die D-Summe ist die Summe der Durchgänge durch die 9 Siebe:
D=Summe aller Durchgänge
(900-D)/100 = k
Die Körnungsziffer k ist die Summe der in Prozent angegebenen Rückstände auf dem vollständigen Siebsatz mit 9 Sieben bis 63 mm (0,25-0,5-1-2-4-8-16-31,5-63 mm) geteilt durch 100:
k=Summe d Rückstände / 100
Die D-Summe ist die Summe der Durchgänge durch die 9 Siebe:
D=Summe aller Durchgänge
(900-D)/100 = k
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Karteninfo:
Autor: Claudii
Oberthema: Baustoffkunde
Thema: Gesteinskörnung
Schule / Uni: TU Darmstadt
Ort: Darmstadt
Veröffentlicht: 29.03.2010