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ROADS & HIGHWAYS

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Steel slag road technology from CSIR-Central Road Research InstituteSteel Slag Road technology paves the way for the sustainable and eco-friendly utilisation of 19 million tonne of waste steel slag generated annually in India as solid waste from various steel plants. CSIR-CRRI...

Steel slag road technology from CSIR-Central Road Research InstituteSteel Slag Road technology paves the way for the sustainable and eco-friendly utilisation of 19 million tonne of waste steel slag generated annually in India as solid waste from various steel plants. CSIR-CRRI has pioneered the development of steel slag road technology by constructing the world's first steel slag road in Surat, using processed electric arc furnace steel slag aggregates. These aggregates are produced at Arcelor Mittal Nippon Steel’s Hazira plant under CSIR-CRRI’s technological guidance, through the valorisation of waste steel slag as processed steel slag aggregates. Approximately one lakh tonne of processed steel slag aggregates have been utilised as a 100 per cent substitute for natural aggregates in the construction of this six-lane bituminous steel slag road, including the road median and shoulders. Steel slag roads can be constructed with two-thirds the thickness of conventional roads using natural aggregates under identical design traffic conditions, resulting in a cost savings of 30 to 40 per cent. These steel slag roads can withstand heavy traffic and adverse weather conditions due to their high structural stiffness. They remain pothole-free and do not require structural rehabilitation for an extended period. Approximately 95 per cent of the road volume is built using processed steel slag aggregates, which are around 50 to 60 per cent cheaper than natural aggregates.REJUPAVE from Verma Industries and CSIR-CRRIDeveloped jointly by CSIR-Central Road Research Institute and Verma Industries, REJUPAVE (rejuvenator for bituminous pavement recycling) is an innovative product revolutionising road construction and maintenance in India by effectively recycling distressed bituminous layers in a road structure. In India, where most roads are bituminous pavements, regular resurfacing every three to four years is essential to maintain quality. Traditionally, this involved overlaying distressed pavements with fresh bitumen and aggregates, significantly increasing pavement thickness. In place of this practice, distressed bituminous layers can be milled and reutilised through indigenously developed technology REJUPAVE using a hot recycling process. This can not only lower the cost of maintenance but also conserve the bituminous binder. REJUPAVE employs a bio-oil-based rejuvenator that allows for the hot recycling of up to 70 per cent of reclaimed asphalt pavement material (RAP) in a new bituminous mix for binder and wearing course layers.REJUPAVE utilises a bio-oil-based rejuvenator made from plant-based raw materials, emphasising sustainability, and minimising environmental impact. Its ability to restore the viscoelastic and rheological properties of oxidised bitumen binders enhances pavement performance and longevity, contributing to more durable and resilient road infrastructure.

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Technology

Minda, Qualcomm Join Forces for Smart Auto Cockpit Tech

Minda Corporation Limited, the flagship of the Spark Minda Group, has announced a strategic partnership with Qualcomm Technologies, Inc. to develop intelligent and connected cockpit solutions for the Indian automotive market. The upcoming smart interface will be powered by Qualcomm’s Snapdragon Cockpit Platform.Commenting on the collaboration, Suresh D, Group CTO of Minda Corporation, said, “This partnership with Qualcomm Technologies marks a major milestone in advancing Minda’s digital cockpit capabilities. By utilising Qualcomm’s cutting-edge automotive platforms, we can now offer se..

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Infrastructure Transport

Railways Spent Rs 604.7 Billion on Passenger Subsidy in FY24

New Delhi – The Indian Railways provisionally spent Rs 604.7 billion in subsidies during the financial year 2023–24, covering 45 per cent of passenger travel costs, Railway Minister Ashwini Vaishnaw informed the Lok Sabha on Wednesday.In a written response to questions from multiple Members of Parliament regarding the recent rail fare hike, Vaishnaw stated that the Indian Railways continues to offer one of the most affordable transport services globally, ferrying over 7.2 billion passengers annually."The total amount of subsidy provided in FY 2023–24 on passenger travel is provisionally ..

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Infrastructure Urban

Auto Sector Can Cut Emissions by 87% by 2050: CEEW

India’s automobile industry could reduce its manufacturing emissions by 87 per cent by 2050 through a shift to green electricity and low-carbon steel, according to a study released by the Council on Energy, Environment and Water (CEEW).The report estimates that if original equipment manufacturers (OEMs) and their suppliers target net-zero emissions by 2050, annual emissions could fall from a projected 64 million tonnes of CO₂ (under the business-as-usual scenario) to just 9 million tonnes. This would require OEMs to adopt 100 per cent green electricity and steel suppliers to source 56 per ..

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