Expanded clay is a lightweight aggregate manufactured from naturally occuring clay. It is non-toxic, disease free, chemically inert and has a neutral pH. It is used as a construction aggregate in lightweight concrete castings, floors and panels and as a loose lightweight fill in geotechnical applications. It is also used extensively in green roof systems as an additive to the substrate and in hydroponic systems as a growing media.
Technical Data Sheet
1. Product Name / Reference
Expanded Clay
2. Main Intended Use
Construction aggregate, geotechnical fill, anti-slip additive, green roof substrate, Horticultural media
3. Chemical Description
Compound Element | Chemical Formula | Typical Content |
Silicon Dioxide | SiO2 | 60.60% |
Aluminium Oxide | Al203 | 18.30% |
Ferric Oxide | Fe203 | 8.54% |
Magnesium Oxide | MgO | 3.83% |
Potassium Oxide | K2O | 3.56% |
Calcium Oxide | CaO | 2.18% |
Titanium Dioxide | TiO2 | 1.07% |
Sodium Oxide | Na2O | 0.48% |
Phosphorous Pentoxide | P2O5 | 0.18% |
Others | 0.20% |
4. Physical Properties
a. Bulk Density | 0.30 – 0.60 g/cm3 |
b. Melting Point | 1000 oC |
c. pH Value | 7.0 |
d. Thermal Conductivity | 0.113 w/mk |
e. Specific Heat | 1.25 – 1.35 Kj/KgK |
5. Sizes Available
Grade | Size |
Fine | 0-4 mm |
Medium | 4 – 10 mm |
Coarse | 10 – 20 mm |
6. Packaging
Packed in 50 litre sacks, 1200 litre IBC big bags or delivered loose in bulk
Water Filtration | Yes |
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 | Yes |