Connect with us

Economy & Market

Towards a Green World

Published

on

Shares

JSW is a prominent cement producer. The company is also adopting various means to become environmentally friendly, and is now marketing slag as a product, says Lopamudra Sengupta – VP, Technical, JSW Cement.

Slag is a byproduct from steel plants, which is obtained from blast furnaces, during the extraction of iron from iron ore. The process of granulating of the slag involves cooling of molten slag through high-pressure water jets. This rapidly quenches the slag and forms granular particles. The resulting granular material comprises around 95 per cent non-crystalline calcium-alumino silicates. The granulated slag is further processed by drying and then grinding in a vertical roller mill or rotating ball mill to a very fine powder, which is called Ground Granulated Blast Furnace Slag or GGBS. The benefits, application and performance of GGBS are same as that of PSC. In case of PSC, predetermined dosage of GGBS is added, whereas GGBS separately combined with OPC, offers the flexibility of using any particular dosage depending on the choice of the user.

Some of the major advantages of GGBS concrete, as compared to pure OPC concrete or fly ash based concrete are given below:

  • Reduced thermal cracks due to lower heat of hydration;
  • Reduced shrinkage cracks;
  • Improved workability and smooth finish;
  • Improved cohesion;
  • Better resistance against chemicals such as chlorides, sulphates and carbon dioxide;
  • Higher long-term strength;
  • Improved durability;

JSW GGBS also meets the requirements of IS: 12089-1989. It is also an eco-friendly green product. JSW GGBS can be used as a partial replacement to OPC cement in concrete production at RMC batching plants and site batching plants.

JSW Portland Slag Cement (PSC)
JSW PSC is a blended cement, wherein some portion of OPC is replaced with GGBFS, to make the structures long lasting and durable. GGBFS present in PSC helps in secondary hydration, producing more C-S-H gel in the system for improved performance of concrete.

PSC can be used in all types of civil engineering works GCo in both structural and non-structural applications. In fact, it has got a wide spectrum of applications as compared to OPC. OPC is not suitable for works such as mass concrete, industrial structures, marine structures, effluent and sewage treatment plants. PSC is an ideal cement in these works, thus making it a perfect all-purpose cement.

PSC is also a sustainable material. As production of PSC ensures the conservation of natural resource (limestone), generates savings in energy in the production process and limits the emission of carbon dioxide, it is regarded as an eco-friendly cement or green cement.

The properties of PSC have been specified by BIS in IS: 455-2015. CII – IGBC has certified JSW PSC as a green product.

The way ahead
The usage of blended products (PSC & GGBS) ensures a pollution-free environment, and ensures no adverse impacts on the health of nearby communities. Utilisation of slag and other by-products minimises the burden on landfills and reduces virgin material usage, fossil fuel usage, and greenhouse emission reductions. Hence, it has a direct contribution to reversing the effects of global warming and climate change. The products of granulated slag are regarded as environment friendly and durable materials that can protect the environment by limiting the exploitation of natural resources and reducing the amount of energy consumed in the mining of natural resources, helping in sustainable development.

About the author
Lopamudra Sengupta,
is VP, Technical, JSW Cement.

Continue Reading
Click to comment

Leave a Reply

Your email address will not be published. Required fields are marked *

Concrete

Shree Cement reports 2025 financial year results

Published

on

By

Shares

Shree Cement posted revenue of US$2.38 billion for FY2025, marking a 5.5 per cent decline year-on-year. Operating costs rose 2.9 per cent to US$2.17 billion, resulting in an EBITDA of US$528 million—down 12 per cent from the previous year. Net profit fell 50 per cent to US$141 million. The company reported cement sales of 9.84Mt in Q4 FY2025, a 3.3 per cent increase from 9.53Mt in Q4 FY2024, with premium products making up 16 per cent of total sales.

Image source:https://newsmantra.in/

Continue Reading

Concrete

Rekha Onteddu to become director at Sagar Cements

Published

on

By

Shares

Sagar Cements has announced the appointment of Rekha Onteddu as a non-executive independent director, effective 30 June 2025. According to People in Business News, Rekha Onteddu is currently serving in a similar capacity at Andhra Cements, the parent company of Sagar Cements.

Image source:https://sagarcements.in/

Continue Reading

Concrete

India’s cement consumption set to rise

Published

on

By

Shares

According to a Moody’s report, India’s cement consumption is projected to rise by 50 per cent over the next five years, increasing from 445 million metric tons per annum (MMTPA) in FY24 to 670 MMTPA by 2030. This growth is expected to be driven by government infrastructure spending and rising housing demand, with an anticipated annual growth rate of 6-7 per cent. To meet this demand, major cement companies are likely to continue acquiring smaller, less profitable firms.

Image source:https://www.telegraphindia.com/

Continue Reading

Trending News

SUBSCRIBE TO THE NEWSLETTER

 

Don't miss out on valuable insights and opportunities to connect with like minded professionals.

 


    This will close in 0 seconds