This study investigates the suitability of using plastic,

\r\nsuch as polyethylene terephthalate (PET), as a partial replacement of

\r\nnatural coarse and fine aggregates (for example, brick chips and

\r\nnatural sand) to produce lightweight concrete for load bearing

\r\nstructural members. The plastic coarse aggregate (PCA) and plastic

\r\nfine aggregate (PFA) were produced from melted polyethylene

\r\nterephthalate (PET) bottles. Tests were conducted using three

\r\ndifferent water–cement (w\/c) ratios, such as 0.42, 0.48, and 0.57,

\r\nwhere PCA and PFA were used as 50% replacement of coarse and

\r\nfine aggregate respectively. Fresh and hardened properties of

\r\nconcrete have been compared for natural aggregate concrete (NAC),

\r\nPCA concrete (PCC) and PFA concrete (PFC). The compressive

\r\nstrength of concrete at 28 days varied with the water–cement ratio for

\r\nboth the PCC and PFC. Between PCC and PFC, PFA concrete

\r\nshowed the highest compressive strength (23.7 MPa) at 0.42 w\/c ratio

\r\nand also the lowest compressive strength (13.7 MPa) at 0.57 w\/c

\r\nratio. Significant reduction in concrete density was mostly observed

\r\nfor PCC samples, ranging between 1977–1924 kg\/m³. With the

\r\nincrease in water–cement ratio PCC achieved higher workability

\r\ncompare to both NAC and PFC. It was found that both the PCA and

\r\nPFA contained concrete achieved the required compressive strength

\r\nto be used for structural purpose as partial replacement of the natural

\r\naggregate; but to obtain the desired lower density as lightweight

\r\nconcrete the PCA is most suited.<\/p>\r\n","references":"[1] S. Ak\u00e7a\u00f6zo\u011flu, C. D. Ati\u015f and K. Ak\u00e7a\u00f6zo\u011flu, \u201cAn investigation on the\r\nuse of shredded waste PET bottles as aggregate in lightweight concrete\u201d.\r\nWaste Management, vol. 30, February 2010, pp. 285 \u2013 290.\r\n[2] C. Albano, N. Camacho, M. Hern\u00e1ndez, A. Matheus and A. Guti\u00e9rrez,\r\n\u201cInfluence of content and particle size of waste PET bottles on concrete\r\nbehavior at different w\/c ratios\u201d Waste Management, vol. 29, October\r\n2009, pp. 2707-2716.\r\n[3] M. Frigione \u201cRecycling of PET bottles as fine aggregate in concrete\u201d,\r\nWaste Management, vol. 30, June 2010, pp. 1101-11066.\r\n[4] O. Y. Marzouk, R. M. Dheilly and M. Queneudec, \u201cValorization of postconsumer\r\nwaste plastic in cementitious concrete composites\u201d, Waste\r\nManagement, vol. 27, February 2007, pp. 310-3188.\r\n[5] Y. W. Choi, D. J. Moon, Y. J. Kim and M. Lachemi, \u201cCharacteristics of\r\nmortar and concrete containing fine aggregate manufactured from\r\nrecycled waste polyethylene terephthalate bottles\u201d, Construction and\r\nBuilding Materials, vol. 23, August 2009, 2829-2835.\r\n[6] Y. W. Choi, D. J. Moon, J. S. Chung and S. K. Cho, \u201cEffects of waste\r\nPET bottles aggregate on the properties of concrete\u201d, Cement and\r\nConcrete Research, vol. 35, April 2005, pp. 776-781.\r\n[7] A. Ghaly and M. Gill, \u201cCompression and deformation performance of\r\nconcrete containing postconsumer plastics\u201d, Journal of Materials in Civil\r\nEngineering, vol. 16, July\/August 2004, pp. 289-296.","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 101, 2015"}