Excess waste tires in Puerto Rico pose health and fire hazards. A policy was proposed to switch 75% of paving materials to asphalt modified with recycled ground tire rubber (GTR). Recycling would mitigate the health risks and fire hazards while reducing the dependence on the export of waste tires for energy recovery. This study uses a lifecycle assessment (LCA) and two scopes to inform the policy from an environmental perspective. The pavement-level analysis compares the conventional and rubberized pavement pilot sections. The system-level analysis evaluates the consequences of the policy's tire diversion from tire-derived fuel (TDF) to GTR. In doing so, this study bridges the gap between the waste management LCAs (focused on processing and less on the use of recycled products) and pavement LCAs (which assess GTR in pavements but not potential waste stream reductions).

中文翻译：

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橡胶沥青路面能否缓解波多黎各的废轮胎问题？使用生命周期评估为潜在的公共政策提供信息

波多黎各多余的废轮胎会对健康和火灾造成危害。提出了一项政策，将 75% 的铺路材料改用再生轮胎橡胶 (GTR) 改性的沥青。回收利用将减轻健康风险和火灾隐患，同时减少对废轮胎出口以进行能源回收的依赖。本研究使用生命周期评估 (LCA) 和两个范围从环境角度为政策提供信息。路面级分析比较了常规和橡胶路面试验段。系统级分析评估政策将轮胎从轮胎衍生燃料 (TDF) 转向 GTR 的后果。在这样做，