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Detailed assessment of the technical properties of recycled aggregates from mixed C&D waste
Engelsen, C. J., Malhotra, S. K., Bhatiani, G., & Kshemendra nath, P. (2020). Detailed assessment of the technical properties of recycled aggregates from mixed C&D waste. Indian Concrete Journal, 94(8), 32-39. https://icjonline.com/editionabstract_detail/082020
An extensive assessment of the product quality has been conducted at Shastri Park C&D waste recycling plant in Delhi. The assessment was conducted during a 5-month period and when challenging mixed C&D waste was processed and recycled. The performance mostly complied to existing IS: 383 limits. The grading of 10/20 mm directly complied with the limits of IS: 383 for graded aggregates. In general for all fraction, the grading properties were found to be of sufficient quality when a proper concrete mix design is applied. Furthermore, the 0/3 mm may contribute to strength when used as aggregates in concrete block production due to the increased content of fines. The study revealed that with proper recycling technology, competitive recycled products can be produced from mixed C&D waste containing more than 20% clay masonry and excavated soil. Hence, the valorisation of the low-graded mixed C&D waste, contributes significantly to circular economy. It reduces the consumption of virgin raw materials and the CO2emission in addition to preserve the groundwater and surface water resources.
