Concrete blocks can be used like any other masonry unit to build foundation, wall, arches, corbels and many others. A typical concrete blocks is equivalent to 5 to 6 red bricks, thus construction is faster then with other masonry unit like traditional red clay bricks. The mortar used is also less with result is cost saving. Fly Ash or concrete blocks have been extensively used in combination with conventional roofing system like RCC, RBC, GI sheets, ACC sheets etc. they are also compatible with other materials like red fired bricks, dressed stone, and compressed earth blocks for composite wall construction.
Acceptability of fly ash / concrete blocks is very high in urban areas for all type of building. They are very popular for as a long lasting, low cost, low maintenance and investment for building of Industrial, institutional or domestic. The performance of cement-based products is making fly ash / concrete blocks a preferred choice in rural area as a wall construction.
Technical specification of concrete or fly ash blocks
Parameter | Description |
Typical size of blocks | 400mmX200mmX200mm or 150mm |
Average compressive strength | 75 to 100 kg/sq.cm |
Water absorption in 24 hours | Less then 15 |
Damages | Max. 2% |