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Offer Details
Metakaolin for Cement Industry (GB-HRM95/98)
Details:GB-HRM is a manufactured pozzolanic mineral admixture that significantly enhances many performance characteristics of cement-based mortars, concretes and related products.
GB-HRM, derived from purified kaolin clay, is a white, amorphous, alumino-silicate, which reacts aggressively with calcium hydroxide to form compounds with cementitious value. Used at 5-15% replacement of cement by weight, GB-HRM will be favorable for increasing strength and reduce permeability. Meanwhile, it will also effectively reduce efflorescence and degradations caused by alkali-silica reaction(ASR) in concrete.
Description: A white, manufactured, amorphous alumino-silicate with excellent physical, chemical and pozzolanic properties. Conform to ASTM C-618, Class N Specifications for Natural And Calcined Pozzolans.
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Item |
GB-HRM95 |
GB-HRM98 |
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Brightness(T457) |
80%min |
75%min |
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D10(micron) |
2.0max |
0.4max |
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Medium particle Size (micron) |
4.5max |
0.8max |
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D90(micron) |
14max |
4max |
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Specific Gravity(kg/m 3 ) |
2600 |
2600 |
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Physical Form |
Powder |
Powder |
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Colour |
Off-White |
Off-White |
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Bulk Density(kg/m 3 ) |
600 |
300 |
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Moisture (%) |
0.8max |
0.8max |
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L.O.I. |
1.0%max |
1.0%max |
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Activity |
30%min |
30-40% |
Typical Chemical Properties
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SiO2(%) |
Al2O3(%) |
Fe2O3(%) |
TiO2(%) |
CaO(%) |
MgO(%) |
CuO(%) |
K2O(%) |
Na2O(%) |
MnO(%) |
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52+/-2 |
45+/-2 |
0.50max |
1.5max |
0.4max |
0.2max |
0.004max |
0.05max |
0.15max |
0.004max |
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