SPECIFICATION
Hammer ® - Microsilica D88 / Silica Fume D88
Product description
Hammer ® - Microsilica D88 is a very fine pozzolanic material, composed of amorphous silica produced by electric arc furnaces as a by-product of the production of elemental silicon or ferro silicon alloys, which can be used in a variety of cementitious products such as concrete, grouts and mortars, and meets or exceeds the specification of ASTM C1240 and EN 13263: 2005.
Chemical Composition
|
ASTM C1240
|
EN 13263: 2005
|
GB/T 21236: 2007
|
Test results
|
SiO2
|
min. 88.0%
|
min. 88.0%
|
min. 88.0%
|
89.10%
|
Al2O3
|
-
|
max. 1.50%
|
-
|
-
|
Fe2O3
|
-
|
max. 2.00%
|
-
|
-
|
CaO+MgO
|
-
|
max. 2.00%
|
-
|
-
|
K2O+Na2O
|
-
|
max. 2.00%
|
-
|
-
|
C
|
-
|
-
|
max. 2.50%
|
1.00%
|
Cl
|
-
|
max. 0.30%
|
max. 0.20%
|
0.12%
|
pH
|
-
|
-
|
4.00 – 8.50
|
6.50
|
Loss on ignition
|
max. 6.00%
|
max. 4.00%
|
max. 4.00%
|
2.16%
|
Moisture content
|
max. 3.00%
|
-
|
max. 3.00%
|
1.10%
|
Physical Properties
|
ASTM C1240
|
EN 13263: 2005
|
GB/T 21236: 2007
|
Test results
|
Specific surface
|
min. 15.0m2/gram
|
15.0-35.0m2/gram
|
min. 15.0m2/gram
|
15.16m2/gram
|
Bulk density
|
-
|
-
|
550 – 700kgs/m3
|
642kgs/m3
|
Percent retained on 45μm sieve
|
max. 10%
|
-
|
max. 5.00%
|
1.12%
|
Pozzolanic activity index at 7 days
|
min. 105%
|
-
|
-
|
105.60%
|
Pozzolanic activity index at 28 days
|
-
|
min. 100%
|
min. 85%
|
-
|
Ratio of water demand
|
-
|
-
|
max. 125%
|
102.10%
|
Further information and technical advice
All information in this publication is in accordance with our present experience and knowledge. However, since we have no influence on the way in which our products are treated and used, we cannot take any responsibility in this respect. The user must assume responsibility himself for checking whether the products are suitable for the purpose and use proposed by him. All existing proprietary rights, laws and regulations shall be observed. |