Natural coarse aggregate from the mine Šaštín – Stráže
Originates from sand dunes of Morava river alluviums.
The major component of the sand is quartz (95-98 % SiO2), the rest consists of alkalis and iron oxides.
Sand - coarse aggregates 0/1 from the quarry Šaštín-Stráže
is used predominantly:
For special purposes, sand can be processed by washing to remove even the smallest remants of organic material and reduce the content of fine particles.
Deliveries:
Sands are actually delivered in bulk by truck transport.
| BASIC CHARACTERISTICS OF SANDS | ||
| VALUE | ||
| Characteristic | ubwashed/washed | |
| Content of fine grains | cat. f3 | |
| Chlorides content | ≤0,01% Cl | |
| Sulphates content | AS 0,2 | |
| Total sulphur content | ≤1 % S | |
| Volume weight | 2,43±0,4 Mg/m³ | |
| Water absorption | 2,5±0,5% | |
| Organic material content STN EN 1744-1 | no content/no content | |
| Carbonates content | < 2 % | |
| Mass activity Ra | 5,7 ±1,6 Bq/kg | |
| Mass activity index | 0,21 | |
| GRANULOMETRIC COMPOSITION | ||||
| Sieve (mm) | Total through (%) | |||
| unwashed | washed | |||
| average | average | |||
| <0,063 | 1 | 0 | ||
| 0,063 | 1 | 0,5 | ||
| 0,125 | 1 | 1 | ||
| 0,25 | 15 | 15 | ||
| 0,5 | 89 | 89 | ||
| 1 | 100 | 100 | ||
| 1,4 | 100 | 100 | ||
| 2 | 100 | 100 | ||
