Weil Marcel, Jeske Udo, Schebek Liselotte
Forschungszentrum Karlsruhe GmbH, ITC-ZTS, Eggenstein-Leopoldshafen, Germany.
Waste Manag Res. 2006 Jun;24(3):197-206. doi: 10.1177/0734242X06063686.
Recycling of construction and demolition waste contributes decisively to the saving of natural mineral resources. In Germany, processed mineral construction and demolition waste from structural engineering is used nearly exclusively in civil engineering (earthwork and road construction sector) as open-loop recycling. Due to the planned stricter limit values for the protection of soil and water, however, this recycling path in civil engineering may no longer be applicable in the future. According to some new guidelines and standards adopted recently, recycled aggregates may also be used for concrete production in the structural engineering sector (closed-loop recycling). Wastes from the structural engineering sector can thus be kept in a closed cycle, and their disposal on a landfill can be avoided. The present report focuses on the determination of maximum waste volumes that may be handled by this new recycling option. Potential adverse effects on the saving of resources and climate protection have been analysed. For this purpose, materials flow analysis and ecobalancing methods have been used.
建筑和拆除废物的回收利用对节约天然矿产资源具有决定性作用。在德国，来自结构工程的经加工的矿物建筑和拆除废物几乎完全作为开环回收利用，用于土木工程（土方工程和道路建设部门）。然而，由于计划中对土壤和水保护的限值将更加严格，这种土木工程中的回收途径未来可能不再适用。根据最近采用的一些新指南和标准，再生骨料也可用于结构工程部门的混凝土生产（闭环回收利用）。因此，结构工程部门产生的废物可以保持在一个封闭的循环中，避免其被填埋处理。本报告重点在于确定这种新回收方案可处理的最大废物量。已分析了对资源节约和气候保护的潜在不利影响。为此，使用了物料流分析和生态平衡方法。
