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LECA® LIGHTWEIGHT AGGREGATES

Leca® LWA was initially developed in Denmark in 1939 to provide lightweight brick and blocks. Since the end of 1950's Leca® LWA has been used for insulation and lightweight fillings in roads and railways across Scandinavia.

It is a lightweight expanded clay, formed by heating and firing natural marine clay in rotary kiln at temperatures up to 1150 degrees centtigrade.