Mix design standard (NEN 8005)

The NEN 8005 is a Dutch standard for mix designs that covers several environmental classes.
Our products meet or exceed all the Dutch standards, which are shown in the table below.
Environ-mental class
Maximum permissible water-cement ratio
Minimum required strength cement / binder content (kg/m³)
Minimum air content a
Largest grain size D (mm)
Air content % (v/v)
1. No risk of deterioration or corrosion
X0
0,70b
200b
 
 
2. Corrosion caused by carbonation
XC1
0,65
260
 
 
XC2
0,60
280
 
 
XC3
0,55
280
 
 
XC4
0,50
300
 
 
3. Corrosion caused by chloride not delivered from seawater
XD1
0,55
300
 
 
XD2
0,50
300
 
 
XD3
0,45
300
 
 
4. Corrosion caused by chloride delivered from seawater
XS1
0,50
300
 
 
XS2
0,45
300
 
 
XS3
0,45
320d
 
 
5. Deterioration by frost / thaw with or without de-icing salts
XF1
0,55
300
 
 
XF2
0,55
300
63
31,5
16
8
3,0
3,5
4,0
5,0
XF2
0,45
300
 
 
XF3
0,50
300
 
 
XF4
0,50
300
63
31,5
16
8
3,0
3,5
4,0
5,0
XF4
0,45
320d
 
 
6. Chemical deterioration
XA1
0,55
300
 
 
XA2c
0,50
320
 
 
XA3c
0,45
340
 
 
a) The minimum air content refers to the measured air content
b) The above-mentioned water-cement ratio and cement content apply only when used in 
   underwater poured concrete
c) For the concrete in this environment class, which will be exposed to liquids with more than 600 mg
   SO4 2-/liter or soil with a sulphate content of 3000 mg/kg, you must use cement with high 
   resistance to sulfates handled in accordance with NEN-EN 197-1
d) For thicknesses greater than 1 m, the cement content may be reduced to a minimum of 300 kg/m3,       

 

Aggressiveness Environmental Assessment (NEN-EN 206-1)
This table not only can be used for concrete in contact with soil and groundwater, but it can also be applied to rate and/or classify the risk of attack by aggressive chemicals for industrial applications or in the agricultural sector.  
Chemical
constituents

Reference test method

XA1

XA2

XA3

Groundwater

SO42- mg/l

EN 196-2

≥ 200 and ≤ 600

≥ 600 and ≤ 3000

≥ 3000 and ≤ 6000

pH

ISO 4316

≥ 6,5 and ≤ 5,5

≥ 5,5 and ≤ 4,5

≥ 4,5 and ≤ 4,0

CO2 mg/l aggresive

prEN 13577:1999

≥ 15 and ≤ 40

≥ 40 and ≤ 100

≥ 100 to saturation

NH4+ mg/l

ISO 7150-1 or ISO 5664

≥ 15 and ≤ 30

≥ 30 and ≤ 60

≥ 60 and ≤ 100

MG2+ mg/l

ISO 7980

≥ 300 and ≤ 1000

≥ 1000 and ≤ 3000

≥ 3000 to saturation

Soil

SO42- mg/kga total

EN 196-2b

≥ 2000 and ≤ 3000c

≥ 3000c and ≤ 12000

≥ 12000 and ≤ 24000

Acidity ml/kg

DIN 4030-2

> 200 baumann gully

Was not found in practice

a) Clay soil with a permeability of less than 10 -5 m / s may be placed in a lower class
b) The test method prescribes the extraction of S042- by means of hydrochloric acid. Water may be 
    used instead when experienced personnel are present.
c) If there is a risk for accumulation of sulphate ions in the concrete, as a result of wet / dry cycles or 
    capillary aspiration, the limit value of 3000 mg / kg may be reduced to 2000 mg / kg