Fraction 4/8 mm – for the production of concrete, felt concrete, paving tiles and products
| Tested feature, marking | Test results | Allowed range of result values |
| 1 | 2 | 3 |
| Composition ofelongated andflat aggregates | 0.2% of the mass | BDS EN 12620:2002+A1:2008/NA:2008 |
| Washable particle content | 0.2% of the mass | BDS EN 12620:2002+A1:2008/NA:2008 |
| Specific particle density:- Particle density in dry condition – Particle density in saturated surface dry condition -Apparent particle density | 2.60 mg/m3 2.62 mg/m3
2.65 mg/m3 | BDS EN 12620:2013No requirement No requirement
No requirement |
| Water absorption, WA | 0.8% of the mass | ≤1 for category WA241BDS EN 12620:2013 |
| Acid-soluble sulfates content, SO3 | 0.04% of the mass | ≤1 BDS EN 12620:2002+A1:2008/NA:2008 |
| Total sulfur content | 0.03% of the mass | ≤1.5 for concrete from groups I and ≤1 for concrete from groups II, III and IVBDS EN 12620:2002+A1:2008/na:2008 |
| Chloride content | 0.01% of the mass | No requirementBDS EN 12620:2013 |
| Clay lumps and admixtures content | 0.0% of the mass | ≤1 for concrete from groups I and II≤0.5 for concrete from groups III and IV BDS EN 12620:2002+A1:2008/na:2008 |
| Humus content | Does not contain | BDS EN 12620:2002+A1:2008/na:2008 |
| Crushing ability on static load | 8.00% of the mass | ≤12 for all groups and classes of concrete≤ B60 and ≤16 for I, II and III concrete groups and classes ≤B25BDS EN 12620:2002+A1:2008/NA:2008 |
All products, offered by DDF JSC Ruse, meet the requirements of BS EN 12620:2002 and have a certificate for factory production control, issued by the Organization for technical conformity, according to the Ordinance on essential requirements and conformity assessment of construction products, Directive 89/ 106 EEC.
The company has a laboratory which controls the quality of products.