Rigorous material mix standards, BUET and MIST laboratory test verification, high compressive strength (up to 55 MPa), and zero-kiln green building compliance across all masonry formats.
Verified physical, mechanical, and hydraulic test parameters per national & international codes
| Product Unit | Standard Dimensions | Compressive Strength | Water Absorption | Dry Density | Standard Code | Primary Applications |
|---|---|---|---|---|---|---|
| Solid Concrete Block (SCB) | 390 × 190 × 190 mm / 240 × 115 × 70 mm | 15.0 - 25.0 MPa (2,175 - 3,625 PSI) | < 8.0% | 2,050 - 2,200 kg/m³ | BDS EN 771-3 / ASTM C90 | Load-bearing foundation walls, multi-storey framing, boundary walls |
| Hollow Concrete Block (HCB) | 390 × 190 × 190 mm (2-Core) | 10.0 - 15.0 MPa (1,450 - 2,175 PSI) | < 8.5% | 1,400 - 1,600 kg/m³ | BDS EN 771-3 / BNBC 2020 | External facade partitions, lightweight internal dividing walls, thermal envelope |
| Uni-Paver 80mm (Heavy Traffic) | 225 × 112.5 × 80 mm (Zig-Zag Interlocking) | 40.0 - 55.0 MPa (5,800 - 7,975 PSI) | < 6.0% | 2,250 - 2,350 kg/m³ | BDS EN 1338 / BSTI BDS 1236 | LGED regional highways, container terminals, factory loading docks, fuel stations |
| Uni-Paver 60mm (Pedestrian & Light Traffic) | 225 × 112.5 × 60 mm (Zig-Zag Interlocking) | 30.0 - 40.0 MPa (4,350 - 5,800 PSI) | < 6.5% | 2,200 - 2,300 kg/m³ | BDS EN 1338 / BSTI BDS 1236 | Footpaths, residential driveways, parking zones, walkways, commercial plazas |
| River Revetment CC Block (CC-200) | 400 × 400 × 200 mm / 450 × 450 × 150 mm | 20.0 - 30.0 MPa (2,900 - 4,350 PSI) | < 7.0% | 2,200 - 2,300 kg/m³ | BWDB Standard / ASTM C140 | Riverbank slope armor, canal revetment, coastal erosion defense, embankment stability |
| Road Kerbstone (K9) | 500 × 300 × 150 mm | 35.0 - 45.0 MPa (5,075 - 6,525 PSI) | < 6.0% | 2,250 - 2,350 kg/m³ | BDS EN 1340 / LGED Specs | Highway lane median dividers, footpath edge restraints, municipal pavement kerbing |
Sustainable non-fired concrete manufacturing compared with traditional brick kilns
Zero fertile topsoil is excavated. OptiBlocks uses coarse river sand, quarry dust, and graded gravel aggregate, keeping agricultural land fertile for national food security.
Traditional brick kilns burn coal and firewood emitting heavy PM2.5 and greenhouse gases. OptiBlocks uses clean electric vibro-compaction and non-fired hydration curing.
Strictly aligns with the Bangladesh Environmental Protection Act mandatory timeline for phasing out traditional clay burnt bricks in government construction projects.
Uniform factory-cast dimensions reduce joint mortar consumption and allow direct thin-layer fair-face skim coating, drastically reducing total building materials wastage.
Our quality assurance lab provides batch-specific compression logs, water absorption testing reports, and BSTI compliance paperwork for institutional procurement.