The trend shifting from red bricks to fly ash bricks is a comparatively more sustainable attempt to safeguarding our environment by reusing the waste from factories and other places. Fly ash bricks also make use of waste materials which come from the combustion of coal in thermal power plants. Fly ash bricks found its development in India, where a mix of fly ash, lime and gypsum was put to use. This process completely replaced the use of clay from the soil. The bricks are regarded as high quality and strong in many respects; they are also responsible for saving energy, soil, carbon emissions, mercury pollution and putting a toxic waste product to beneficial use.
While prioritising the safety of our ecosystem, we need to move towards adopting processes which reuse and recycle the heavy amount of waste generated to lower the burgeoning burden on environment. The raw materials of fly ash brick mainly includes cement, slag, fly ash and other construction rubbish. For red bricks, they are made from clay. The mixing proportion is generally 30-40% Fly Ash, 30-40% Sand, 30-40% aggregates and stone dust and 10-13% opc cement. The raw mix is molded in the molding press/machine, pressed under a pressure into bricks. As a matter of fact, fly ash bricks gain their strength and durability from the chemical reaction of fly ash with water. Fly ash is combined with sand and pigments and formed with vibro compaction and cured with water for twenty one days. This method uses 85% less energy than traditional kiln firing.
Fly ash makes concrete stronger as the reduction in water leads to improved strength. Significant hydration can continue for six months or longer, leading to much higher ultimate strength than concrete without fly ash. Slowly adapting the green brick technology (Fly ash Bricks) has become a must to save our mother nature in. years to come.
The thin, flat concrete blocks used for paving walkways, patios, and driveways, generally called pavers are a comfortable replacement to regular brick pathways. Where the installation of both bricks as well as concrete pavers are done in the same way, the choice between brick and concrete pavers largely depends on one’s personal preference. At Balaji Ecogreen, pavers are produced in a number of styles and shapes. They are a better selection if one is looking for longer durability even in varied climatic conditions. As opposed to concrete surfaces, pavers can be easily repaired and replaced, if need be.
We understand the fact that pavers are reliable even in areas where conventional types of construction are less durable due to several operational and environmental constraints. The interlocking pavers were introduced in construction specifically for footpaths, parking areas etc. But now they are being adopted extensively in many different forms where the conventional construction of pavement using hot bituminous mix or cement concrete technology is not feasible or desirable. They perform well in extreme temperatures. Pavers are available in hole, x-shape, y-shape, pentagon, polygon and fan styles.
Adding to insight, there are quite a few more distinctive features of interlocking pavers when compared to the traditional methods of pavement construction. Some of the striking points of consideration are:
- Bulk production in factories ensures availability of blocks with superior quality and high dimensional accuracy.
- Superior quality of blocks ensures durability of pavements
- They are not easily affected by thermal expansion or contraction.
- Pavers do not require curing, as a result of which they can be opened for traffic immediately after construction.
- Construction process of blocks is labor intensive and requires less sophisticated machinery
- Maintenance is easy and simple and is not affected by fuel and oil spillage.
- Resistant to punching loads and horizontal shear forces caused by regulated transportation of heavy vehicles