厦门膨润土贸易有限公司

Hammer ^® – Microsilica

Microsilica, also known as silica fume, 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 as well as elastomer, polymer, refractory, ceramic and rubber applications.

● very high specific surface area (min.15000m²/kg)
● very high content of amorphous silicon dioxide (SiO2: 80% - 97%)
● very efficient filler (average particle diameter is 0.15microns, about 100x smaller than cement)
● very reactive pozzolan

Xiamen Bentonite International Corporation (XBIC) is a professional supplier of microsilica, has established long-term partnerships with several large-scale ferrosilicon and silicon metal factories in China, and set up standardized equipments to collect and densify microsilica for many years. Our annual output of Hammer ^® – microsilica is nearly 100,000mt, which is produced in conformance with the ASTM C1240 specification, and the quality is controlled and monitored throughout the entire production process to ensure that it meets or exceeds the specification requirements.

The SiO2-content ranges from 80% to 97%, and our microsilica are classified as follows:

● Hammer ^® - Microsilica D80　　SiO2: 80% - 85%	\| specification \| test report \| MSDS \| RFQ \|
● Hammer ^® - Microsilica D85　　SiO2: 85% - 88%	\| specification \| test report \| MSDS \| RFQ \|
● Hammer ^® - Microsilica D88　　SiO2: 88% - 90%	\| specification \| test report \| MSDS \| RFQ \|
● Hammer ^® - Microsilica D90　　SiO2: 90% - 93%	\| specification \| test report \| MSDS \| RFQ \|
● Hammer ^® - Microsilica D93　　SiO2: 93% - 96%	\| specification \| test report \| MSDS \| RFQ \|
● Hammer ^® - Microsilica D96　　SiO2: 96% - 97%	\| specification \| test report \| MSDS \| RFQ \|

Chemical Composition	ASTM C1240	EN 13263: 2005	JIS A 6207: 2000	GB/T 21236: 2007
SiO2	min. 85.0%	min. 85.0%	min. 85.0%	min. 85.0%
Al2O3	-	max. 1.50%	max. 1.50%	-
Fe2O3	-	max. 2.00%	max. 2.00%	-
CaO+MgO	-	max. 2.00%	max. 2.00%	-
K2O+Na2O	-	max. 2.00%	max. 2.00%	-
C	-	-	-	max. 2.50%
Cl	-	max. 0.30%	max. 0.10%	max. 0.30%
pH	-	-	4.00 – 8.50	-
Loss on ignition	max. 6.00%	max. 4.00%	max. 5.00%	max. 6.00%
Moisture content	max. 3.00%	-	max. 3.00%	max. 3.00%

Physical Properties	ASTM C1240	EN 13263: 2005	JIS A 6207: 2000	GB/T 21236: 2007
Specific surface	min. 15.0m²/gram	15.0-35.0m²/gram	min. 15.0m²/gram	min. 15.0m²/gram
Bulk density	-	-	-	550 – 700kgs/m³
Percent retained on 45μm sieve	max. 10%	-	-	max. 10.0%
Pozzolanic activity index at 7 days	min. 105%	-	min. 95%	-
Pozzolanic activity index at 28 days	-	min. 100%	min. 105%	min. 85%
Ratio of water demand	-	-	-	max. 125%

Packaging

Hammer ^® - microsilica is supplied in uv-proof and aging-resistant jumbo bag according to GB/T10454 and EN ISO 21898, which is suitable to be stored in a severe environment for long term.