The use of synthetic polymers (Plastics) has become part of our everyday life since their introduction over 100 years ago. Every vital section of the economy ranging from clothing, agriculture, packaging, automobile, medicine, electrical and electronics have been virtually revolutionized by application of plastics. The challenge of the disposal of these plastics after use is what this study seeks to address in part. Low density polyethylene (LDPE) and polyethylene terephthalate (PET) plastic wastes were blended with bitumen as binder for road construction as an effective and valuable means of disposing these wastes, employing marshall hot-mix design. 15% and 30% w/w LDPE and PET wastes of total binder required for the asphalt design were incorporated at 6% optimum binder content. The polymer modified asphalts (PMA) were tested for marshall stability and flow. At 15% w/w LDPE, the stability and flow values are 819 kg and 3.6 mm, respectively, while at 30% w/w LDPE, the stability and flow values are 643 kg and 4.1 mm, respectively. Similarly, at 15% w/w PET, the stability and flow values are 737 kg and 3.3 mm, respectively, while at 30% w/w PET, the stability and flow values are 707 kg and 3.5 mm, respectively. These results are in agreement with the “general specification for roads and bridges, vol. II (1997)” of the federal government of Nigeria, which specifies a minimum of 350 kg and 2-4 mm for stability and flow, respectively. However, the 15% LDPE and PET plastic wastes incorporation gives better results than that of the 30% incorporation.
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机译：自从100多年前问世以来，合成聚合物（塑料）的使用已成为我们日常生活的一部分。通过应用塑料，实际上从服装，农业，包装，汽车，医药，电气和电子产品到经济的每个重要领域都发生了革命性变化。本研究试图部分解决使用后处置这些塑料的挑战。将低密度聚乙烯（LDPE）和聚对苯二甲酸乙二酯（PET）塑料废料与沥青混合，作为道路施工的有效和有价值的方法，采用马歇尔热混设计，将其作为道路处理的粘结剂。掺入沥青设计所需总粘合剂的15％和30％w / w的LDPE和PET废料，最佳粘合剂含量为6％。测试了聚合物改性的沥青（PMA）的马歇尔稳定性和流动性。在15％w / w LDPE下，稳定性和流量值分别为819 kg和3.6 mm，而在30％w / w LDPE下，稳定性和流量值分别为643 kg和4.1 mm。同样，在15％w / w PET下，稳定性和流量值分别为737 kg和3.3 mm，而在30％w / w PET下，稳定性和流量值分别为707 kg和3.5 mm。这些结果与“道路和桥梁通用规范，第尼日利亚联邦政府的II（1997）”，其稳定性和流量分别规定最小为350 kg和2-4 mm。但是，掺入15％的LDPE和PET塑料废料的效果要好于掺入30％的LDPE和PET塑料废料。
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