V03 Gesteinskörnung Flashcards

1
Q

leichte Gesteinskörnung

A

<2000 kg/m³

Blähton

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2
Q

normale Gesteinskörnung

A

2000 bis 3200 kg/m³

Kies

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3
Q

schwere Gesteinskörnung

A

> 3200 kg/m³

Baryt

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4
Q

d/D

A

d - Unterkorn

D Oberkorn

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5
Q

Maschensieb

A

Siebe mit kleinen Siebweiten

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6
Q

Quadratlochsiebe

A

Siebe mit größeren Siebweiten

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7
Q

grobe Gesteinskörnung Gc (korngruppe)

A

enggestuft: 8/16, 2/8
weitgestuft: 4/16, 2/11,2

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8
Q

feine Gesteinskörnung Gf (korngruppe)

A

0/1, 0/2, 0/4

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9
Q

Natürlich zusammengesetzte Gesteinskörnung Gng (korngruppe)

A

0/8

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10
Q

Korngemisch Ga (korngruppe)

A

0/8, 0/16, 0/32

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11
Q

Körnungsziffer K

A

K= sum R/100

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12
Q

D-Summe D

A

D= sum D

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13
Q

zusammenhang K und D

A

K=(900-sum D)/100

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14
Q

FI

A

Flakeness Index (Plattigkeit)

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15
Q

SI

A

Shapeness Index (Kornform)

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16
Q

f

A

feinanteil

–hoher feinanteil=hoher Wasseranspruch

17
Q

sc

A

Shell content

–stark Wasserausgend

18
Q

F

A

Frost-Tau-Wert
bestimmt:
–Masserverlust infolge Frost-Tauwechsel
–Frostbeständigkeit der GK

19
Q

M

A

Magnesiumsulfat-Wert

–Bestimmen des Masseverlusts nach Beanspruchung

20
Q

LA

A

Los Angeles

–Zertrümmerung

21
Q

SZ

A

Schlagezertrümmerung

22
Q

MDE

A

Micro-Deval

23
Q

Alkali-Kieselsäure-Reaktion Voraussetzungen:

A
  1. Zutritt von Wasser
  2. Alkalien in Beton
  3. Reaktive Gesteinskörnung
24
Q

AKR gefährdete Gesteinskörnung

A

Flint und Opalstein

**Grauwacke, Kies