An investigation on the use of shredded waste PET bottles as aggregate in lightweight concrete |
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| Authors: | Semiha Akçaözoğlu Cengiz Duran Atiş Kubilay Akçaözoğlu |
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| Institution: | 1. Department of Architecture, Nigde University, Nigde 51100, Turkey;2. Department of Civil Engineering, Erciyes University, Kayseri 38039, Turkey;3. Department of Civil Engineering, Nigde University, Nigde 51100, Turkey;1. Department of Architecture, Faculty of Architecture, Nigde University, Nigde 51240, Turkey;2. Department of Civil Engineering, Faculty of Engineering, Nigde University, Nigde 51240, Turkey;1. Department of Transportation Engineering, School of Civil Engineering, Shandong University, Jinan 250061, China;2. Department of Construction Management and Engineering, College of Engineering and Architecture, North Dakota State University, Fargo, ND 58108, USA;1. Department of Civil Engineering, College of Technology and Engineering, MPUAT, Udaipur, India;2. Department of Civil Engineering, Malaviya National Institute of Technology Jaipur, Jaipur, India;3. Discipline of Civil Engineering, Indian Institute of Technology Indore, Simrol, Indore 453552, India;1. Department of Civil Engineering in College of Engineering, Ocean University of China, Qingdao 266100, PR China;2. Collaborative Innovation Center of Engineering Construction and Safety in Blue Economic Zone, Qingdao 266033, PR China;3. Qingdao Shundafeng Industry and Trade Co., Ltd., Qingdao 266000, PR China;1. Faculty for the Built Environment, University of Malta, Tal-Qroqq, Msida MSD 2080, Malta;2. Department of Civil and Environmental Engineering, Politecnico di Milano, Piazza Leonardo da Vinci, Milano, Italy;1. Research Unit: Materials, Processes and Environment (UR/MPE), University Boumerdes, Cité Frantz Fanon, 35000 Boumerdes, Algeria;2. Process Engineering Department, Faculty of Engineering Science, University Boumerdes, Cité Frantz Fanon, 35000 Boumerdes, Algeria |
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| Abstract: | In this work, the utilization of shredded waste Poly-ethylene Terephthalate (PET) bottle granules as a lightweight aggregate in mortar was investigated. Investigation was carried out on two groups of mortar samples, one made with only PET aggregates and, second made with PET and sand aggregates together. Additionally, blast-furnace slag was also used as the replacement of cement on mass basis at the replacement ratio of 50% to reduce the amount of cement used and provide savings. The water–binder (w/b) ratio and PET–binder (PET/b) ratio used in the mixtures were 0.45 and 0.50, respectively. The size of shredded PET granules used in the preparation of mortar mixtures were between 0 and 4 mm. The results of the laboratory study and testing carried out showed that mortar containing only PET aggregate, mortar containing PET and sand aggregate, and mortars modified with slag as cement replacement can be drop into structural lightweight concrete category in terms of unit weight and strength properties. Therefore, it was concluded that there is a potential for the use of shredded waste PET granules as aggregate in the production of structural lightweight concrete. The use of shredded waste PET granules due to its low unit weight reduces the unit weight of concrete which results in a reduction in the death weight of a structural concrete member of a building. Reduction in the death weight of a building will help to reduce the seismic risk of the building since the earthquake forces linearly dependant on the dead-weight. Furthermore, it was also concluded that the use of industrial wastes such as PET granules and blast-furnace slag in concrete provides some advantages, i.e., reduction in the use of natural resources, disposal of wastes, prevention of environmental pollution, and energy saving. |
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