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Possible utilization of cigarette butts in light-weight fired clay bricks Abdul Kadir, A and Mohajerani, A 2008, 'Possible utilization of cigarette butts in light-weight fired clay bricks', in E Juda (ed.) Proceedings of World Academy on Science, Engineering and Technology, Turkey, 21 - 23 November 2008, pp. 153-157. Document type: Conference Paper Collection: Conference Papers Title Possible utilization of cigarette butts in light-weight fired clay bricks Author(s) Abdul Kadir, A Mohajerani, A Year 2008 Conference name World Congree on Science, Engineering and Technology Conference location Turkey Conference dates 21 - 23 November 2008 Proceedings title Proceedings of World Academy on Science, Engineering and Technology Editor(s) E Juda Publisher World Academy of Science, Engineering and Technology Place of publication Turkey Start page 153 End page 157 Total pages 5 Abstract Over a million tonnes of cigarette butts (CBs) are produced worldwide annually. These CBs accumulate in the environment due to the poor biodegradability of the cellulose acetate filters and pose a serious environmental risk. This paper presents some of the results from a continuing study on recycling CBs into fired clay bricks. Properties including compressive strength, flexural strength, density, water absorption and thermal conductivity of fired clay bricks are reported and discussed. Furthermore, leaching of heavy metals from the manufactured clay bricks was tested. The results show that the density of fired bricks was reduced by about 8 - 30 %, depending on the percentage of CBs incorporated into the raw materials. The compressive strength of bricks tested was 12.57, 5.22 and 3.00 MPa for 2.5, 5.0 and 10 % CB content respectively. Water absorption and initial rate of absorption values increased as density, and hence porosity, of bricks decreased with increasing CB volume. The leaching test results revealed trace amounts of heavy metals. Subjects Environmental Technologies Construction Materials Keyword(s) Cigarette Butts Fired clay bricks light bricks recycling waste thermal conductivity ISSN 2070-3740 Related Links Link Description http://www.waset.org/journals/ijcee/v2/v2-3-21.pdf Link to Published Version   Versions Version Filter Type Mon, 11 Jul 2011, 11:01:05 EST Filtered Full Access Statistics: 290 Abstract Views  -  Detailed Statistics Created: Mon, 11 Jul 2011, 09:25:00 EST by Catalyst Administrator