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Performance of masonry units prepared using construction and demolition waste as fine aggregates

Joshi, AM and Basutkar, SM and Keshava, M and Raghunath, S and Jagadish, KS (2018) Performance of masonry units prepared using construction and demolition waste as fine aggregates. In: 10th International Masonry Conference,IMC 2018, 9 - 11 July 2018, Milan; Italy, pp. 1176-1185.

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Construction activities demand huge quantity of materials like aggregates, masonry units, cement, steel, water etc. The energy consumed in production and procurement of these materials is considerable, leading to negative impacts on the environment. To have a sustainable solution, low cost alternatives and energy efficient materials need to be explored and adopted. The 3R's (reduce, re-use, recycle) of sustainability is one such means. The present study attempts to utilize construction and demolition (C&D) waste in the form of crushed demolished brick masonry (DBM) as an alternative to soil and fine aggregate in (a) stabilized adobe blocks and (b) concrete blocks respectively. Stabilized Adobe blocks were cast in various combinations; soil and fine aggregate were replaced by crushed C&D waste. Concrete blocks with varying percentage of C&D waste as fine aggregate of different sizes were cast. These masonry units were tested for their physical and mechanical properties and were compared with the properties of commercially procured burnt clay bricks and concrete blocks respectively for their suitability to be used as masonry units. Test results exhibited satisfactory engineering properties including strength characteristics, when soil was replaced in the order of 60-80 in stabilized adobe and about 50 replacement of manufactured sand (M sand) by crushed C&D waste in the form of demolished brick masonry. The experimental program indicates suitability and potential of utilizing demolished brick masonry waste as partial replacement of soil in stabilized adobe and fine aggregate in concrete blocks. The process outlined in preparing masonry units is one way of handling the wastes in an effective manner. © 2018 The International Masonry Society (IMS).

Item Type: Conference Proceedings
Publication: Proceedings of the International Masonry Society Conferences
Publisher: International Masonry Society
Additional Information: Copyright for this article belongs to International Masonry Society.
Keywords: Aggregates; Brick; Concrete blocks; Concretes; Construction industry; Demolition; Energy efficiency; Soil testing; Soils; Sustainable development, Brick masonry; Construction and demolition; Construction and demolition waste; Masonry units; Physical and mechanical properties; Stabilized adobe; Strength characteristics; Sustainable construction, Mechanical properties
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 10 Apr 2019 05:52
Last Modified: 10 Apr 2019 05:52
URI: http://eprints.iisc.ac.in/id/eprint/62045

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