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Sustainable asphalt production
| 题名： | Sustainable asphalt production |
| 正文语种： | eng |
| 作者： | Hans-Friedrich Peters |
| 摘要： | Sustainability has been part of the road building conversation for decades. Yet improvements that make the methods and machines more environmentally friendly continue to gain momentum. Industry leaders increasingly see green practices as not only a way to better the world, but a tactic to improve profitability, too. Conversations about green road building always start with the use of recycled asphalt (RAP) and whether these recycled materials really perform as well as mix made from virgin aggregate. The biggest reductions in indirect CO_2 emissions result from the implementation of RAP, which should not be regarded as waste material. It is a suitable substitute for virgin materials as the aggregates in reclaimed asphalt show little ageing and are mechanically and geometrically within the quality ranges of new material. Bitumen holds up well, too. Its ageing is limited and can be compensated by using small amounts of new bitumen. Using RAP saves on both aggregate and bitumen costs while reducing emissions, initially and over the lifetime of a road. |
| 出版年： | 2021 |
| 期刊名称： | World highways |
| 卷： | 30 |
| 期： | 3 |
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