Vivek Kejriwal, CMD, Sunvik Steels
Sunvik Steels is a steel manufacturer with a captive power plant and generates fly ash. Vivek Kejriwal, CMD, Sunvik Steels speaks on the company´s manufacturing set-up for fly ash bricks and blocks which are used in the construction industry.
What has been the general approach of a common man towards fly ash?
The common man, the youth and the young professionals today are very much aware and concerned about global warming. Usage of fly ash has a major role to play in reducing global warming. Fly ash, when used to make blocks, reduces the carbon footprint on the soil. It also reduces the usage of red soil from virgin earth used in making bricks. Increased usage of fly ash blocks can cut down the usage of cement, which is made out of limestone hills. So somewhere, we can increase the green cover of the Earth.
How many people really know about fly ash and its potential?
The professionals of the real estate and the infrastructure world are definitely aware of it. These include architects, engineers, site planners and developers. The common man on the street might be aware of fly ash blocks but it needs to be popularised many times more.
What is your source of fly ash generation? What are the typical quantities?
The fly ash is totally from our own plant; majorly from the sponge iron kiln and the heat recovery boiler. About couple of years back we had started our first machine with a capacity of 60 tonnes per day, but today by creating awareness in the market about the positive qualities of fly ash blocks. And we are happy to state that we have increased our production capacity by 100 per cent and are able to achieve 120 T per day.
What about the quality of fly ash?
We have got it tested from CIVIL-AID for compressive strength, for water absorption. We have always been able to stand up to the required standards, consistently.
How do you propose to add value to fly ash? What is the present scenario?
The entire industry scenario of fly ash bricks & blocks has been initiated by our marketing team. Rigorous awareness campaigns have been done - today, Sunvik fly ash is highly popular and in demand.
We have added value to the fly ash waste and have created smooth blocks that do not even require plastering. They are highly resistant to heat and have almost zero seepage.
What is the quality of products made using fly ash? How are the blocks made with fly ash superior to red bricks?
Fly ash blocks are superior to red bricks in terms of compressive strength by almost three times, which increases the durability of the structure.
With rapid speed of urbanisation, what is the role played by the products made out of fly ash?
Urbanisation has brought in high-rise buildings, increased temperatures and a devastating speed in erosion of green cover.
Usage of fly ash blocks will help us cut down this speed of vanishing limestone hills, decrease carbon footprint and will also help building interiors stay much cooler.