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GP-800 Grey Ceramic Microspheres are extra-coarse, ultra-high-strength alumino-silicate ceramic microspheres engineered for heavy-duty construction applications operating under high mechanical loads, thick sections, and aggressive service conditions. GP-800 represents the most robust grade within the GP construction range, designed for maximum volume build, structural reinforcement, and long-term dimensional stability.
In construction systems, GP-800 functions as a rigid ceramic micro-aggregate, improving compressive strength, crack resistance, and load transfer in thick cementitious sections such as structural grouts, industrial floors, heavy repair mortars, and mass-fill systems, where fine fillers alone are insufficient.
Ceramic microspheres, Cenospheres, Solid alumino-silicate microspheres
Naturally derived hollow alumino-silicate ceramic spheres (lightweight inorganic filler)
Not applicable (mineral mixture)
Light to dark grey color powder
Spherical
2.25-2.40 gm/cc
12141-46-7
Not single-substance (varies by source / classification)
2621.90.00
Not regulated (non-hazardous inorganic powder)
Structural repair mortars
Deep patch repairs and mass-fill systems
Load-bearing repair applications
Heavy-duty non-shrink grouts
Base-plate and machine foundation grouts
Structural void filling and anchoring
Heavy-duty industrial flooring systems
Thick cementitious screeds
High-load warehouse and plant floors
Thick overlays and toppings
Polymer-modified structural layers
Wear-resistant surface build-ups
Protective cementitious linings
Barrier coatings for industrial structures
Impact- and abrasion-resistant cement systems
| Property | Typical Value |
|---|---|
| Chemical Composition | Alumino-Silicate Ceramic |
| Color | Grey |
| Particle Morphology | Spherical |
| Structure | Rigid / Ultra-High Strength |
| Median Particle Size (D50) | Extra-coarse grade |
| True Density | ~2.2 g/cc |
| Bulk Density | ~1.1 – 1.4 g/cc |
| Crush Strength | Very high (structural grade) |
| Mohs Hardness | ~6 – 7 |
| pH (slurry) | Neutral to mildly alkaline |
| Thermal Stability | > 1,000 °C |
| Form | Free-flowing powder |
Extra-coarse, high-strength ceramic spheres enhance compressive strength and structural performance in demanding applications.
Supports large thickness build without excessive shrinkage or cracking.
Rigid ceramic micro-aggregate reduces deformation under mechanical and thermal stress.
Improves durability of floors, grouts, and overlays exposed to heavy traffic and mechanical wear.
Spherical geometry helps distribute stresses more uniformly within the cementitious matrix.
Inert ceramic chemistry resists moisture, alkalis, and construction chemicals over long service life.
GP-200 Grey Ceramic Microspheres are inorganic, non-toxic, and chemically inert under normal construction material handling conditions.
Safety goggles
Gloves
Dust mask or respirator in dusty environments
Refer to the Safety Data Sheet (SDS) for detailed handling and occupational safety guidance.
Proper storage ensures product flowability and consistent performance.
25 kg HDPE-lined paper bags
1 ton Jumbo / bulk bags