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Table 1 Composition of the different concrete mixtures M1–M5

From: Benthic community establishment on different concrete mixtures introduced to a German deep-water port

Mixture

Cement type

[kg/m3]

Water [kg/m3]

w/c—ratio

Aggregates

Type

[kg/m3]

Art

[kg/m3]

Art

[kg/m3]

M1

CEM I 42,5R

320

160

0.5

Sand

0–2 mm

667

Gravel

2–8 mm

95

Magnadens 20 s

2122

M2

CEM III/A 42,5 N

320

160

0.5

Sand

0-2 mm

664

Gravel

2–8 mm

95

Magnadens 20 s

2112

M3

CEM III/B 42,5 N-LH/SR/NA

320

160

0.5

Sand

0–2 mm

662

Gravel

2–8 mm

95

Magnadens 20 s

2107

M4

CEM III/B 42,5 N-LH/SR/NA

320

160

0.5

Iron silicate 0–5 mm

1361

Iron silicate

5–22 mm

1358

–

–

M5

CEM III/B 42,5 N-LH/SR/NA

320

160

0.5

Sand

0–2 mm

284

EOS

2193

–

–

  1. Ingredients of cements (CEM I 42,5R; CEM III/A 42,5 N; CEM III/B 42.5 N-LH/SR/NA) and aggregates (sand, gravel, magnadens, iron silicate, EOS) are given in kg/m3