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As a consequence of increased urbanization, there has been high stress on the need for connectivity in the form of roads. Consequently, this demand has led to multiple issues namely environmental consequences from open cast mines, air pollution from blasting of hills and subsequent scarcity in jelly stones, triggering rising prices, and transportation of coarse aggregates from distant locations thereby aggravating environmental implications including automobile pollution. All along, another negative impact of urbanization upon the environment is the rising quantity of obsolete discarded electronic products. In this context, E-waste ceramics (also called as E-ferrites) are non-recyclable, and hence are directly sent to hazardous landfills as a prevailing practice among authorized and unauthorized recyclers in India. The present research is an effort to identify the optimum replacement of coarse aggregates in base course of the rigid pavement with E-waste ceramics. The laboratory studies were conducted on M40 grade mix, with the mix design as per Bureau of Indian Standards (BIS), also more popularly known as IS (Indian Standard) codes. The casting of specimens and curing was carried out for 7th and 28th day; that were then subjected to standard tests as per Indian Road Congress (IRC) regulations. The replacement of E-ceramics with the conventional coarse aggregates was studied for the range from 0 to 100%. The resultant finally confirmed the optimum maximum replacement by 20%, with a two-fold advantage. Firstly, by deviation of 20% of E-waste ceramic from being transported to Treatment, Storage, and Disposal Facility (TSDF), which would have otherwise compounded impacts w.r.t. operation and maintenance of landfills, scarcity of land, and the priced land costs. Secondly, reduction in the quantum of generation of jelly stones from quarry, and its significant bearing upon the direct and inadvertent environmental consequences. The cost–benefit analysis has indicated an approximate saving of INR (Indian Rupees) 1,40,000 per km. This is about 4–5% of total investment for utilizing crushed stone as coarse aggregate in road construction projects and business.

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Optimum Replacement of Coarse Aggregates with E-Waste Ceramics for a Rigid Pavement

  • 会议论文

  • 发表日期：

    2025年

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  • R. Swathivarma,
  • Rajesh Gopinath,
  • B. R. Vinod,
  • M. B. Bhaskar,
  • P. M. Vatsala,
  • N. L. Arjun Kanth

摘要

As a consequence of increased urbanization, there has been high stress on the need for connectivity in the form of roads. Consequently, this demand has led to multiple issues namely environmental consequences from open cast mines, air pollution from blasting of hills and subsequent scarcity in jelly stones, triggering rising prices, and transportation of coarse aggregates from distant locations thereby aggravating environmental implications including automobile pollution. All along, another negative impact of urbanization upon the environment is the rising quantity of obsolete discarded electronic products. In this context, E-waste ceramics (also called as E-ferrites) are non-recyclable, and hence are directly sent to hazardous landfills as a prevailing practice among authorized and unauthorized recyclers in India. The present research is an effort to identify the optimum replacement of coarse aggregates in base course of the rigid pavement with E-waste ceramics. The laboratory studies were conducted on M40 grade mix, with the mix design as per Bureau of Indian Standards (BIS), also more popularly known as IS (Indian Standard) codes. The casting of specimens and curing was carried out for 7th and 28th day; that were then subjected to standard tests as per Indian Road Congress (IRC) regulations. The replacement of E-ceramics with the conventional coarse aggregates was studied for the range from 0 to 100%. The resultant finally confirmed the optimum maximum replacement by 20%, with a two-fold advantage. Firstly, by deviation of 20% of E-waste ceramic from being transported to Treatment, Storage, and Disposal Facility (TSDF), which would have otherwise compounded impacts w.r.t. operation and maintenance of landfills, scarcity of land, and the priced land costs. Secondly, reduction in the quantum of generation of jelly stones from quarry, and its significant bearing upon the direct and inadvertent environmental consequences. The cost–benefit analysis has indicated an approximate saving of INR (Indian Rupees) 1,40,000 per km. This is about 4–5% of total investment for utilizing crushed stone as coarse aggregate in road construction projects and business.