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Lightweight expanded clay aggregate (LECA) or expanded clay (exclay) 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 of Cătun (before 1599–1616), Wallachian political figure; Béatrice Leca (born 1970), French writer; Daniel Leca (born 1985), French politician; Francine Leca (1938-2024), French surgeon and professor; Grégory Leca (born 1980), French footballer; Haralamb Lecca (or Leca), (1873–1920), Romanian poet and playwright
The selection of the proper index to use depends on the industry in which it is applied. For example, while CE, M&S or IC Index are typically employed for chemical process industries, the ENR (Engineering News-Record) construction index is used for general industrial construction and takes in account the prices for fixed amounts of structural steel, cement, lumber and labor.
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The iShares Core US Aggregate Bond ETF (AGG) , which tracks the investment results of the Bloomberg Barclays U.S. Aggregate Bond Index, can give bond investors general exposure to the fixed income ...
The use of the expanded clay aggregate is economically recommended, particularly in the concrete production, since it reduces the bulk density while minimizing the total weight of the constructions. It can be concluded that the use of expanded clay is very important in civil constructions, due to its overall weight, cost and maintenance.
The producer price index released a day earlier on January 14 reported a modest 0.3% increase in wholesale prices in December, rising 3.3% year over year, up from 3% in November.
Semi-Hydroponics (Semi-Hydro or S/H) was the first passive hydroponic technique utilized for orchids, originating in the early 1990s, using Lightweight Expanded Clay Aggregate (LECA) as a medium in solid-bottomed containers, into which one or two, small-diameter holes were placed in the sidewall, setting the depth of the internal reservoir.