Porous Aggregate

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Porous Aggregate

 

(lightweight aggregate), natural or artificial bulk stone material of porous structure with a density of not more than 1,200 kg/m3, used in modern civil engineering to make lightweight concretes.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Guan, "Internal curing of mortar with low water to cementitious materials ratio using a normal weight porous aggregate," Construction and Building Materials, vol.
The addition of 12% dispersion into the batch of water probably seals both the porous aggregate and capillaries in silicate admixtures and the concrete permeability for water is limited to the cement paste only.
The nets, to be made of hard porous aggregate with "Cricketweave" carpet for the batting and bowling ends, will complement the club's existing indoor nets.
[[sigma].sub.ij], [D.sub.i], and [E.sub.i] are the stress tensor components, electric displacements, and electric field vector for the solid phases of the porous aggregate, respectively.
A phenomenon of water absorbed by porous aggregate, which then moving out into the hardened cement paste when concrete is already dry, could continuously present moisture in hardened concrete without treatment on the concrete surface.
Bychkov of the Russian Academy of Sciences' Institute for High Temperatures in Moscow proposed that ball lightning consists of a loose, porous aggregate of particles.
Recently patented is a synthetic turf made from a sub-surface layer, a porous aggregate layer over the sub-surface layer and a pile fabric over the porous aggregate layer.
Meanwhile, Mack mixes his cement with run-of-the-mill, crack-prone, porous aggregate. Mack's cement is cheaper, at least before maintenance costs kick in, so he is awarded the multimillion dollar road contract.
Less porous aggregate gradation has delayed the fluid grout movement via filling the air voids of the porous asphalt skeleton.
The increase of strength in time is lower than in the case of normal weight concrete because it is limited by low strength of the porous aggregate itself.
1) The addition of fine aggregate to coarse aggregate matrix at minimum porosity results in mixtures that do not fulfill the minimum requirement for permeability for some porous aggregate gradations.