From Waste to Wealth: CSIR-CRRI and JSW Steel, Salem Partner to Build Steel Slag Roads in Tamil Nadu

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From Waste to Wealth: CSIR-CRRI & JSW Steel Salem — Steel Slag Roads in Tamil Nadu

1. At a Glance

2. Why in the News

3. Background & Evolution

4. Core Static Facts

5. Multi-Dimensional Analysis

Environmental - Diverts steel slag (hazardous-tending solid waste) from landfill/dumping; ~1 lakh tonnes consumed in 1 km of Surat road [S3]. - Reduces quarrying of natural aggregate — cuts biodiversity loss & dust pollution; lowers embodied carbon of road infra [S2][S6].

Economic - Cost saving and improved pavement performance flagged by NITI Aayog guidelines [S6]. - Monetises a by-product for steel makers — aligns with National Steel Policy decarbonisation push [S2][S6].

Scientific / Technological - Indigenous R&D by CSIR-CRRI (est. 1952); slag aggregates substitute 100% natural aggregate in bituminous layers [S2][S3]. - IRC accreditation pathway permits use on National Highways [S6].

Administrative / Federal - Centre–PSU/Pvt–State convergence: CSIR (Union) + JSW (private) executing in Tamil Nadu; NHAI is parallel adopter on NH-66 [S1][S4].

Ethical / Governance - Embeds Extended Producer Responsibility logic for steel industry by-products; advances SDG-9, 11, 12, 13 [S1][S6].

6. Recent Developments (last 12–18 months)

7. Prelims Hooks

8. Mains Relevance

Possible question stems: 1. "Examine how technologies like steel-slag road construction operationalise the circular-economy vision in India's infrastructure sector." (GS-III, 250 words) 2. "Industrial by-products are an untapped resource for India's infrastructure deficit. Discuss with reference to recent CSIR-CRRI initiatives." (GS-III) 3. "Discuss the role of CSIR laboratories in translating R&D into commercial public-infrastructure outcomes." (GS-III)

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