KB building blocks
| Properties | Testing procedure under | Declared parameters |
|---|---|---|
| Compressive strength (load-bearing structure elements) | ČSN EN 772-1 | ≥ 10 N/mm2 |
| Dimensional stability (load-bearing structure elements) | ČSN EN 772-14 | ≤ 0.8 mm.m-1 |
| Dimensions and tolerances (class D1) | ČSN EN 772-16 | length, width, height (+3/-5 mm) |
| Shape and layout | ||
| a) relative cross-section area of holes – top face | ČSN EN 772-2 | 45 ± 10% |
| b) dimensions and tolerances | ČSN EN 772-16 | class D1 |
| Block weight | ||
| a) KB 1-20 A | ČSN EN 772-13 | 16 kg ± 10% |
| b) KB 1-15 A | ČSN EN 772-13 | 14 kg ± 10% |
| Volume density | ||
| a) KB 1-20 A | ČSN EN 772-13 | 1,150 kg.m3 ± 10% |
| b) KB 1-15 A | ČSN EN 772-13 | 1,300 kg.m3 ± 10% |
| Shear adhesion – bricking mortar KB-BLOK systém | ČSN EN 1052-3 | ≥ 0.08 N.mm-2 |
| Concrete absorbing capacity | ČSN EN 13369, Annex G | ≤ 10% |
| Capillary absorbing capacity | ČSN EN 772-1 | ≤ 15 g.m-2.s-1 |
| Frost-resistance | ČSN EN 13198, Annex A | min. 50 cycles |
| Reaction to fire | ČSN EN 13501-1 | A1 |
| Hazardous substances | ČSN EN 771-3 ZA.1 | not applicable |
| Natural radionuclide content | ||
| a) weight activity index | Decree No. 307/2002 Coll. | ≤ 0.5 (-) |
| b) weight activity of Ra226 | Decree No. 307/2002 Coll. | ≤ 150 Bq/kg |
KB XC masonry system
| Properties | Testing procedure under | Declared parameters |
|---|---|---|
| Compressive strength (load-bearing structure elements) | ČSN EN 772-1 | ≥ 10 N/mm2 |
| Dimensional stability (load-bearing structure elements) | ČSN EN 772-14 | ≤ 0.8 mm.m-1 |
| Shape and layout | ||
| a) relative cross-section area of holes – top face | ČSN EN 772-2 | 45 ± 10% |
| b) dimensions and tolerances | ČSN EN 772-16 | class D1 |
| Block weight | ||
| a) KB XC 80 | ČSN EN 772-13 | 12.6 kg ± 10% |
| b) KB XC 115 | ČSN EN 772-13 | 14.3 kg ± 10% |
| c) KB XC 160 | ČSN EN 772-13 | 23.5 kg ± 10% |
| d) KB XC 240 | ČSN EN 772-13 | 32.5 kg ± 10% |
| Volume density | ||
| a) KB XC 80 | ČSN EN 772-13 | 1,470 kg.m3 ± 10% |
| b) KB XC 115 | ČSN EN 772-13 | 1,150 kg.m3 ± 10% |
| c) KB XC 160 | ČSN EN 772-13 | 1,350 kg.m3 ± 10% |
| d) KB XC 240 | ČSN EN 772-13 | 1,240 kg.m3 ± 10% |
| Shear adhesion – bricking mortar KB-BLOK systém | ČSN EN 1052-3 | ≥ 0.15 N.mm-2 |
| Concrete absorbing capacity | ČSN EN 13369, Annex G | ≤ 10% |
| Capillary absorbing capacity | ČSN EN 772-11 | ≤ 15 g.m-2.s-1 |
| Frost-resistance | ČSN EN 13198, Annex A | min. 50 cycles |
| Reaction to fire | ČSN EN 13501-1 | A1 |
| Hazardous substances | ČSN EN 771-3 ZA.1 | not applicable |
| Natural radionuclide content | ||
| a) weight activity index | Decree No. 307/2002 Coll. | ≤ 0.5 (-) |
| b) weight activity of Ra226 | Decree No. 307/2002 Coll. | ≤ 150 Bq/kg |
KB Strop
| Properties | Testing procedure under | Declared parameters |
|---|---|---|
| Mechanical resistance | ČSN EN 15037-2+A1 | Class R1 > 10 kN |
| Reaction to fire (for external structure elements without plaster) | ČSN EN 13369:2004 | Class A1 |
| Acoustic properties (air and footstep noise damping) | ČSN EN 13369:2004 | NPD |
| Thermal conductivity of material along with product geometry | ČSN 73 0540-3 | 1.23 (W/m.K) |
| Thermal resistance | ČSN 73 0540-4 | 0.35 m2.K/W |
| Hazardous substances | ČSN EN 771-3 ZA.1 | not applicable |
| Geometric properties | ČSN EN 15037-2+A1 | Class N2 |
| Durability | ČSN EN 13369:2004 | Environmental conditions |
| Volume density | ČSN EN 13369:2004 | 1,215 kg.m-3 ± 10% |
| Dimensions and tolerances (class D1) | ČSN EN 15037-2+A1 | width ± 3 mm length ± 5 mm |
Retaining walls
| Properties | Testing procedure under | Declared parameters |
|---|---|---|
| Compressive strength (perpendicular to laying surface) | ||
| a) visible element | ČSN EN 772-1 | 10 N/mm2 |
| b) anchoring beam | ČSN EN 772-1 | 10 N/mm2 |
| Capillary absorbing capacity (for external structure elements without plaster) | ČSN EN 772-11 | only for visible elements max. 10 g(m2s) |
| Weight absorbing capacity | max. 7% | |
| Concrete volume density in dry condition | ČSN EN 772-13 | 2,200 kg/m3 |
| Planarity of face surfaces | ČSN EN 772-20 | max. 1 mm |
| Dimensions and tolerances (class D1) | ||
| a) element length | ČSN EN 772-16 | (+3/-5 mm) |
| b) element width | ČSN EN 772-16 | (+3/-5 mm) |
| c) element height | ČSN EN 772-16 | (+3/-5 mm) |
| Frost-resistance | ČSN EN 7311322 | 50 cycles |
| Hazardous substances | ČSN EN 771-3 ZA.1 | not applicable |
Garden architecture
| Properties | Testing procedure under | Declared parameters |
|---|---|---|
| Compressive strength | ČSN EN 12 390-3 | C 25/30 |
| Absorbing capacity | ČSN EN 13 369 | < 7% |
| Volume density | ČSN EN 12 390-7 | 2,000 ≤ x ≤ 2,600 kg/m3 |
| Dimensions and tolerances (class D1) | ||
| a) element length | ČSN EN 772-16 | (+ 5 mm) |
| b) element width | ČSN EN 772-16 | (+ 5 mm) |
| c) element height | ČSN EN 772-16 | (+ 5 mm) |
| Resistance to freezing/defrosting (no defrosting salt) | ČSN EN 13 198 | 50 cycles / no cracks, protrusions, flaking |
| Hazardous substances | ČSN EN 771-3 ZA.1 | not applicable |
| Reaction to fire | Class A1 | |
| Natural radionuclide content | ||
| a) weight activity index | Decree No. 307/2002 Coll. | ≤ 0.5 (-) |
| b) weight activity of Ra226 | Decree No. 307/2002 Coll. | ≤ 150 Bq/kg |
Pavement
| Properties | Testing procedure under | Declared parameters |
|---|---|---|
| Appearance | EN 1338, Annex J | no cracks, flaking or layering |
| Shape and dimensions | ||
| a) element length | EN 1338, Annex C | (± 2 mm) |
| b) element width | EN 1338, Annex C | (± 2 mm) |
| c) element height | EN 1338, Annex C | (± 2 mm) |
| Transverse tensile strength | EN 1338, Annex F | ≥ 3.6 MPa |
| Fracture loading | EN 1338 | ≥ 250 N/mm |
| Weight absorbing capacity | EN 1338 | max. 6.0% |
| Abrasion resistance (class 4, Böhm method) | EN 1338, Annex G | ≤ 18,000 mm3/5,000 mm2 |
| Resistance to CHRL, method C | EN 1338 | ≤ 1,000 g/m2 |
| Resistance to weather, Class 3 | EN 73 1326/Z1 | Weight loss ≤ 1.0 kg/m2 |
| Testing procedure A | 100 cycles | |
| Testing procedure C | 75 cycles | |
| Reaction to fire | Class A1 |
Transport infrastructure elements
| Properties | Testing procedure under | Declared parameters |
|---|---|---|
| Appearance | ČSN EN 1340, Annex J | no cracks, flaking or layering |
| Face layer thickness | ČSN EN 1340, Annex C | min. 4 mm |
| Shape and dimensions | ČSN EN 1340, Annex C | |
| a) element length | ± 5 mm | |
| b) element width | ± 3 mm | |
| c) element height | ± 5 mm | |
| Bending strength | ČSN EN 1340, Annex F | Class S U 3.5 Mpa |
| Abrasion resistance | ČSN EN 1340, Annex G, H | |
| a) class 3H park kerbstone | ≤ 23 mm | |
| a) class 4I road kerbstone | ≤ 20 mm | |
| Resistance to weather, Class 3 | ČSN 731326/Z1 | Weight loss < 1.0 kg/m2 |
| Testing procedure A | 100 cycles | |
| Testing procedure C | 75 cycles |
Roofing
| Properties | Testing procedure under | Declared parameters |
|---|---|---|
| Load-bearing capacity – characteristic after 28 days | ČSN EN 490 | 3248 N |
| Resistance to frost and dew – drip after 20 hours | ČSN EN 490 | no drip |
| Weight | ČSN EN 490 | (± 10%) |
| Suspension length | ČSN EN 490 | ± 4 mm |
| Cover width | ČSN EN 490 | ± 5 mm |
| Planarity | ČSN EN 490 | ± 3 mm |
| Soaking capacity – drip after 20 hours | ČSN EN 490 | must not soak for 20 hours |
| Natural radionuclide content | ČSN EN 490 | 31 Ra-226Bq/kg |
