PDF(Pubmed)
Abstract：
Plastic waste management has received significant attention in recent decades due to the urgent global environmental crisis caused by plastic pollution. The versatile and durable nature of plastic has led to its widespread usage across various sectors. However, its nonbiodegradable nature contributes to unsustainable production practices, leading to extensive landfill usage and posing threats to marine ecosystems and the food chain. To address these environmental concerns, numerous challenges have been recently addressed through investigating alternative approaches for disposing of plastic waste, with the construction sector emerging as a promising option. Incorporating plastic waste materials into concrete not only offers economic benefits but also provides a valid alternative to conventional disposal methods. This paper presents the results of different experimental studies, some of them available in the literature and others new, discussing the feasibility of integrating plastic waste into concrete and its impact on mechanical properties. The influence of different sizes, natures, treatments, and percentages of plastic waste in the concrete mixtures is dealt with in order to provide further data for helping to understand the nonunivocal results in the literature, under the conviction that only further observations can help to understand the mechanics of concrete with plastic aggregates. The experimental investigation highlighted that one parameter that is better than others and can be considered to compare different experimental investigations is the variation in weight (due to the effective volume of plastics in the mix), determining a sort of increasing of porosity that degrades the mechanical characteristics. However, this seems inconsistent in some cases. Therefore, the need for further research is highlighted to refine production methods and optimize mix designs.
摘要：
近几十年来，由于塑料污染引起的全球环境危机，塑料废物管理受到了广泛关注。塑料的多才多艺和耐用性质导致其在各个领域的广泛使用。然而,其不可生物降解的性质有助于不可持续的生产实践，导致垃圾填埋场的广泛使用，并对海洋生态系统和食物链构成威胁。为了解决这些环境问题，通过研究处理塑料废物的替代方法，最近解决了许多挑战，随着建筑业成为一个有希望的选择。将塑料废料掺入混凝土中不仅具有经济效益，而且还提供了常规处置方法的有效替代方案。本文介绍了不同实验研究的结果，其中一些可以在文献中找到，另一些是新的，讨论了塑料垃圾融入混凝土的可行性及其对力学性能的影响。不同尺寸的影响，性质,治疗,和百分比的塑料废物在混凝土混合物中的处理，以提供进一步的数据，帮助理解在文献中的非统一的结果，坚信只有进一步的观察才能帮助理解塑料骨料混凝土的力学原理。实验研究强调，一个参数比其他参数更好，可以考虑比较不同的实验研究是重量的变化（由于混合物中塑料的有效体积），确定一种降低机械特性的孔隙率增加。然而,在某些情况下，这似乎不一致。因此,需要进一步研究，以完善生产方法和优化混合设计。
