haydite

haydite

[′hā‚dīt]
(materials)
Expanded shale, slate, or clay characterized by low unit weight and satisfactory structural properties; used as an aggregate to produce lightweight structural concrete.

haydite

A lightweight aggregate, used in concrete, having an expanded cellular structure; produced by heating shale.
References in periodicals archive ?
When the bed temperature of the semicoke circulating in the fluidized bed is below 800 [degrees]C, shale ash with a well-developed pore structure and high activity can be obtained and it is suitable for producing building materials such as cement and haydite [16].
Tenders are invited for move bulk materials such as sodium chloride(salt), aggregates (rock), premix, haydite, sand, cinders, etc.
The ash residue generated from combustion can be used as raw material of cement, haydite and building blocks.