Sand-gravel mixture in Perm

A sand-gravel mixture (with a gravel content of up to 15%) is a natural non–metallic building material regulated by GOST 23735-2014, consisting of sand with a gravel content of 10% to 15% by weight. This type of product is produced by hydro in a mechanized manner using a C-42 type dredger by extracting the average underlying layer of a gravel-sand mixture with an average gravel content, as well as washing this mixture with a large amount of water to remove pulverized and clay particles. As a result of production and technological processes, this non-metallic building material has the following physical and mechanical properties:

1. Bulk density, equal to 1500 kg/m3; ...

An enriched sand-gravel mixture (with a gravel content of up to 80%) is a natural non–metallic building material consisting of sand with a gravel content of up to 80% by weight. This type of product is produced in a hydro-mechanized manner using a C-42 type dredger by extracting the raw materials from the underlying layers of a gravel-sand mixture with a high gravel content, as well as washing this mixture with a large amount of water to remove pulverized and clay particles. The enrichment of this mixture is carried out using processing equipment, at this stage, granulometric fractions of sand are removed from the gravel-sand mixture.

As a result of production and technological processes, this non-metallic building material has the following physical and mechanical properties: ...

PGS (sand-gravel mixture). A mixture containing gravel and sand. There are natural and enriched GHGS (OPGS) GOST 23735-2014. In natural PGS, the content of gravel grains larger than 5 mm should be at least 10% , and in OPGS not more than 90% by weight.

PGS is used to create cement mortar, which is intended for the manufacture of concrete, as well as: for the installation of lower layers of foundations for road surfaces, drainage layers, road embankments, temporary highways, backfilling pits, trenches, pillows for monolithic foundations, filling bases for various sites, for planning and landscaping, for reclamation and other types of construction....