|
Components |
Category |
||
|
Excellent (A) |
Class I (B) |
Suitable (C) |
|
|
SiO2% ≥ |
85 |
75 |
65 |
|
K2O+Na2O% ≤ |
1.5 |
3.0 |
5.0 |
|
Mica% ≤ |
0.5 |
1.0 |
|
|
SO3% |
1.0 |
2.0 |
|
|
Clay% ≤ |
3.0 |
5.0 |
8.0 |
|
Water % ≤ |
8 |
||
Sand:
|
Specification |
Portland Cement 45 N/ mm² (CEM I 42,5) |
|
Specific surface (Blaine) |
3.500 – 4.000 cm²/g |
|
Setting times - Initial - Final |
100 – 180 minutes max.300 minutes |
|
Alcalinity (Na+ + K+) |
0,4 – 0,8 % |
|
CaO |
60 – 62 % |
|
Cao free |
max.2,0 % |
|
MgO |
max.3,5 % |
|
SiO2 |
20 – 22 % |
|
Loss on ignition |
max.5,0 % |
Cement:
|
Components |
Category |
||
|
A |
B |
C |
|
|
Water content% ≤ |
10 |
12 |
|
|
CaSO4·2H2O% ≤ |
95 |
90 |
85 |
|
CaSO4·1/2H2O%≤ |
0.5 |
||
|
MgO% ≤ |
0.10 |
0.2 |
|
|
Na2O% ≤ |
0.06 |
0.08 |
|
|
PH |
5-9 |
||
|
Cl— (mg/kg) ≤ |
100 |
200 |
300 |
Gypsum/Anhydrite:
|
Components |
Category |
||
|
A |
B |
C |
|
|
(CaO+MgO) % < |
90 |
75 |
65 |
|
MgO % < |
2 |
5 |
8 |
|
SiO2 % < |
2 |
5 |
8 |
|
SO3 % < |
2 |
5 |
7 |
|
Slaking time/min < |
15 |
||
|
Slaking speed > |
60 |
||
|
Quick balance % < |
5 |
10 |
15 |
|
Granulation (0.08mm |
10 |
15 |
20 |
Lime (quick lime):
Aluminium paste/powder
It is recommended to use aluminium paste/powder especially manufactured for the production of AAC products. The type of the selected aluminium powder/paste depends on the properties of the AAC product to be produced.
Water
Potable water without any components that are detrimental to concrete. In order to obtain the right mix temperature the free water for the mixing process shall be supplied from a cold as well as a hot water source.
|
Yield point |
Tensile strength |
Elongation at failure |
|||
|
Nominal value
|
Average value |
Nominal value * |
Average value recommended |
Nominal value * |
Average value recommended |
|
500 N/mm² |
550 N/mm² |
550 N/mm² |
600 N/mm² |
8% |
9% |
The steel shall be free from grease, oil and rust.
RAW MATERIAL REQUIREMENTS
