Talk:Expanded clay aggregate

[Untitled]
Ex-clay is the word the industry uses for Expanded Clay, while Leca is a brand name of Expanded Clay.

In my opinion this page has no relevance and should be removed. Also, the information in the article is incomplete. — Preceding unsigned comment added by Leca67 (talk • contribs)
 * No relevance? I disagree. This material likely meets Wikipedia's notability criteria. Nishaca (talk) 18:30, 2 March 2011 (UTC)

Confusing sentence
The part in italics isn't clear, "To make the exclay, toxic residues such as used oils and all kinds of petroleum gas oils are being burned which makes residues detached while mixing with liquids." Nishaca (talk) 18:30, 2 March 2011 (UTC)

advert tag
While I realize this is a generic product, the article is certainly written like an advert. From the tone of it, this stuff is the perfect material for numerous applications. However, there are other materials used for those same applications. Why? Clearly there are benefits of some kind in some applications. - Sum mer PhD  (talk) 21:18, 29 June 2014 (UTC)

moisture impermeable
Under Characteristics, the article claims 'moisture impermeable'. I don't believe that is true and I see no evidence in the article to back up the claim.

http://www.netweber.co.uk/fileadmin/user_upload/Leca_UK/Technical_Documents/Moisture_Content.pdf — Preceding unsigned comment added by 88.97.62.77 (talk) 21:05, 14 September 2016 (UTC)

salvaged section
Someone had confused expanded clay aggregate with expansive clay. In the process of fixing the latter article, I deleted a section, which might be useful in this article. Text follows:

Formation and characteristics

 * The expanded clay is obtained by the heating of different types of clay, at a temperature of approximately 1200 °C, using a rotary kiln.
 * The principal characteristic of the expanded clay is to have a density three times smaller than normal aggregates. Usually, the density of this type of clay is 350 kg/m3.
 * This kind of clay has a feature that is not very common in lightweight aggregates, since it has a high capacity for thermal and acoustic insulation, which is very important for civil constructions. Also, the use of this material is economically viable.
 * The expanded clay is very consistent and is more resistant at high temperatures than normal aggregates, and it has higher water absorption. It has a high content of aluminium, silica, oxygen and iron.
 * 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.

I don't have time to evaluate the text or the reference to see if they're any good, though it does look like duplicates stuff already in the article. Argyriou (talk) 21:12, 23 March 2018 (UTC)