Advanced Cement Technologies GB-HRM is a manufactured pozzolanic mineral admixture which significantly enhances many performance characteristics of cement-based mortars, concretes and related products.

GB-HMR, 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 contribute to: Increased strength, reduced permeability, greater durability and effective control of 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. Conforms to ASTM C-618, Class N Specifications for Natural and Calcined Pozzolans.

Typical Physical Properties:
Brightness(T457): 79-82%
D10 (micron): 2.0max
Medium particle Size (micron): 4.5max
D90 (micron): 14max
Specific Gravity: 2.60
Physical Form: Powder
Colour: Off-White
Bulk Density (kg/m3): 300-400
Moisure (%): 0.8 max
L. O. I.: 1.0%max
Activity 30%min: 30-40%