GB(JY)-CK60/90/92
GB(JY)CK-95/96
GB(JY)-CK88B
GB(JY)CK98/98L/D
GB-CK90
GB-CKP107
GB-HRM95/98
GB-CK80
GB-CKR901
GB-CK88C
GB-CK88A
GB-K80
GB-K97
GB-KR90
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                           HIGH REACTIVITY METAKAOLIN FOR CEMENT INDUSTRY      
(GB-HRM95/98)

1. Benefits and Application

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.

2. Typical Physical Properties

Item GB-HRM95 GB-HRM98
Brightness(T457) 80%min 70%min
D10(micron) 2.0max 0.4max
Medium particle Size (micron) 4.5max 2max
D90(micron) 14max 4max
Specific Gravity(kg/m3) 2600 2600
Physical Form Powder Powder
Colour Off-White Off-White
Bulk Density(kg/m3) 600 300
Moisture (%) 0.8max 0.8max
L.O.I. 1.0%max 1.0%max
Activity 30%min 30-40%

3. Typical Chemical Properties

SiO2(%) Al2O3(%) Fe2O3(%) TiO2(%) CaO(%) MgO(%) CuO(%) K2O(%) Na2O(%) MnO(%)
52+/-2 45+/-2 0.50max 1.5max 0.4max 0.2max 0.004max 0.05max 0.15max 0.004max

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