Aggregates 4-8
Limestone lump graded 4-8 mm
Limestone lumps of 4-8 mm are produced by quarrying followed by crushing and sorting to the required fraction.
Area Of Use
4-8 mm limestone is mainly used for the production of concrete mixes or for the production of the paving layer for the laying of concrete pavements.
Technical parameters
ISO 9001
Quality management systém is certificated according to ČSN EN ISO 9001:2016.
ISO 14001
Quality management systém is certificated according to ČSN EN ISO 9001:2016.
Physical Properties
| Limestine lump 4-8 | properties |
| grain size | GC85/20 |
| shape of coarse aggregate grains - shape index | S/20 |
| volumetric mass | 2,689 Mg/m3 |
| fine particle content | f1,5 |
| resistance to crushing by the LA method | LA40 |
| chlorides | ≤ 0,02 % |
| acid soluble sulphates | AS0,2 |
| total sulphur | suits |
| light pollutant content | ≤ 0,05 % |
| absorption | WA24 1,5 |
| emission of radioactivity | index ≤ 1,0 |
| resistance to freezing and thawing | F1 |
| resistance to alkali-silica reaction | expansiveness < 0,50 % |
Chemical Properties
| Content | Unit | Target | Achieved avr. parametres | |
| CaO | % | 26-45 | 40,0 | |
| MgO | % | 4-15 | 8,9 | |
| SiO2 | % | 28-45 | 39,9 | |
| Al2O3 | % | 4-12 | 6,9 | |