Pumice aggregates are used as a lightweight aggregate in construction, lightweight concrete, precast concrete, concrete block manufacture and fence posts. They are also used as geotechnical fill where a lightweight material is specified due to loading concerns. The other main area of use is as a substrate in green roof systems where a lightweight, water retentive material is required.
Technical Data Sheet
1. Product Name / Reference
Pumice Aggregates
2. Main Intended Use
Construction, lightweight concrete, precast concrete, concrete blocks and green roof systems
3. Chemical Description
This media contains no free silica
Compound Element | Chemical Formula | Typical Content |
Silicon Dioxide | SiO2 | 74.55% |
Aluminium Oxide | Al203 | 12.45% |
Potassium Oxide | K2O | 4.50% |
Sodium Oxide | Na2O | 4.00% |
Ferric Oxide | Fe2O | <2.00% |
Calcium Oxide | CaO | <2.00% |
Magnesium Oxide | MgO | <2.00% |
Titanium Dioxide | TiO2 | <2.00% |
Sulphur Trioxide | SO3 | 0.20% |
Manganese Oxide | MnO | 0.10% |
Carbon Dioxide | CO2 | 0.10% |
Ferrous Oxide | FeO | 0.06% |
Phosphorous Pentoxide | P2O5 | 0.005% |
Combined Water | H2O+ | 4.35% |
Determined by FAAS
4. Physical Properties
a. Bulk Density 0.76 – 0.85g/cm3
b. Melting Point 1200 oC
c. pH Value 7.0 – 8.0
d. Specific Gravity 2.40 g/cm3
e. Hardness 5.5 Mohs
5. Sizes Available
Grade Size
0/3 0 – 3 mm
0/8 0 – 8 mm
0/16 0 – 16 mm
4/16 4 – 16 mm
6. Packaging
Delivered loose in bulk, half or full load quantities
Water Filtration | No |
Odour Control | No |
Green Roof Systems | Yes |
Cosmetics Scrubs | No |
Dental Treatments | No |
PCB Scrubbing | No |
Glass Treatments | No |
Metal Finishing | No |
Lightweight Precast Concrete | Yes |
Odour Treatment | No |
Seawater Reverse Osmosis | No |
Automotive Polish | No |
Effluent Treatment | No |
Horticulture | Yes |
Construction | Yes |
Hand Cleaner | No |
Paints & Coatings | No |
Lightweight Plasters | No |