Expanded clay aggregate
Substrate suitable for hydroculture applications
Nº Q886974 ★★★
Rare · Knowledge
Expanded clay aggregate
Substrate suitable for hydroculture applications
Expanded clay (exclay) or lightweight expanded clay aggregate (LECA) is a lightweight aggregate made by heating clay to around 1,200 °C (2,190 °F) in a rotary kiln. The heating process causes gases trapped in the clay to expand, forming thousands of small bubbles and giving the material a porous structure.
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From Wikipedia
Expanded clay (exclay) or lightweight expanded clay aggregate (LECA) is a lightweight aggregate made by heating clay to around 1,200 °C (2,190 °F) in a rotary kiln. The heating process causes gases trapped in the clay to expand, forming thousands of small bubbles and giving the material a porous structure. LECA has an approximately round or oblong shape due to circular movement in the kiln and is available in different sizes and densities. LECA is used to make lightweight concrete products and other uses.
Text: Wikipédia, CC BY-SA 4.0. · Image: Lucis (CC BY-SA 3.0) ·
