Pumice Aggregates



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 or in 1 cubic metre IBC big bags

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

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