About Leca

Leca is initial letters for: Light Expanded Clay Aggregate.
LECA consists of small, lightweight, bloated particles of burnt clay. Pretrea ted special kind of clay is derived to rotary kiln, and exposed to high temperature, then clay is expanded in a granule shape with honeycomb core and ceramic shell. The thousands of small, air-filled cavities give LECA its strength and thermal insulation properties. The base material is plastic clay which is extensively pretreated and then heated and expanded in a rotary kiln. Finally, the product is burned at about 1100 °C to form the finished LECA product.
LECA is an environment-friendly, entirely natural product incorporating the same benefits as tile in brick form LECA is indestructible, non-combustible, and impervious to attack by dry-rot, wet-rot and insects.
Properties
• LIGHTNESS
• THERMAL INSULATION
• SOUND INSULATION
• FIRE RESISTANCE
• NON-DECOMPOSABILITY
• WATER ABSORPTION


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