Marzouk O Yazoghli, Dheilly R M, Queneudec M
Laboratoire des Technologies Innovantes (EA 3899), Département Génie-Civil, IUT AMIENS, Université de Picardie Jules Verne, Avenue des Facultés, 80025 Amiens Cedex 01, France.
Waste Manag. 2007;27(2):310-8. doi: 10.1016/j.wasman.2006.03.012. Epub 2006 May 30.
The sheer amount of disposable bottles being produced nowadays makes it imperative to identify alternative procedures for recycling them since they are non-biodegradable. This paper describes an innovative use of consumed plastic bottle waste as sand-substitution aggregate within composite materials for building application. Particularly, bottles made of polyethylene terephthalate (PET) have been used as partial and complete substitutes for sand in concrete composites. Various volume fractions of sand varying from 2% to 100% were substituted by the same volume of granulated plastic, and various sizes of PET aggregates were used. The bulk density and mechanical characteristics of the composites produced were evaluated. To study the relationship between mechanical properties and composite microstructure, scanning electron microscopy technique was employed. The results presented show that substituting sand at a level below 50% by volume with granulated PET, whose upper granular limit equals 5mm, affects neither the compressive strength nor the flexural strength of composites. This study demonstrates that plastic bottles shredded into small PET particles may be used successfully as sand-substitution aggregates in cementitious concrete composites. These new composites would appear to offer an attractive low-cost material with consistent properties; moreover, they would help in resolving some of the solid waste problems created by plastics production and in saving energy.
如今生产的一次性瓶子数量巨大，鉴于它们不可生物降解，因此必须确定回收它们的替代方法。本文描述了一种创新用途，即将消费后的塑料瓶废料用作建筑应用复合材料中替代沙子的骨料。具体而言，聚对苯二甲酸乙二酯（PET）制成的瓶子已被用作混凝土复合材料中沙子的部分或完全替代品。用相同体积的粒状塑料替代了体积分数从2%到100%不等的各种沙子，并使用了各种尺寸的PET骨料。对所生产复合材料的堆积密度和力学特性进行了评估。为了研究力学性能与复合材料微观结构之间的关系，采用了扫描电子显微镜技术。给出的结果表明，用粒状PET替代体积分数低于50%的沙子（其颗粒上限为5毫米），既不会影响复合材料的抗压强度，也不会影响其抗弯强度。这项研究表明，切碎成小PET颗粒的塑料瓶可以成功用作水泥混凝土复合材料中替代沙子的骨料。这些新型复合材料似乎提供了一种具有一致性能的有吸引力的低成本材料；此外，它们将有助于解决塑料生产产生的一些固体废物问题并节约能源。
