Correction to "Environmental Impacts of Alternative Cement Binders".
Correction to "Environmental Impacts of Alternative Cement Binders".
复制标题
对“替代水泥粘合剂的环境影响”的更正。
DOI：
10.1021/acs.est.1c02128
复制
发表时间：
2021
影响因子：
11.4
通讯作者：
Miller SA
中科院分区：
文献类型：
--
作者：
Miller SA
水泥生产是最难脱碳的工业活动之一。人们提出并探索了各种措施来减少其CO2排放。在这些措施中，用替代材料替代波特兰水泥（PC）熟料可以说是最有效的，因此是一个具有高度研究和商业兴趣的领域。然而，很少有研究系统地量化了替代品的环境影响，即，非PC，熟料。在这里，我们量化并比较了生产来自几种最常见的替代水泥系统的粘合剂所产生的环境影响。我们发现，来自大多数这些替代水泥的粘合剂导致较低的温室气体（GHG）排放以及其他指标的环境影响相对于PC粘合剂。这些减排的程度因生产所需能源、熟料形成过程中与工艺有关的排放以及原材料需求而异。虽然使用替代水泥可能对环境有益，但通过使用矿物掺合料部分替代PC，可以实现类似的温室气体排放减少。在这项工作中，我们定量地展示了替代粘合剂减轻环境负担的潜力，并强调在评估这些产品时需要考虑环境影响类别之间的权衡。
Cement production is among the most difficult industrial activities to decarbonize. Various measures have been proposed and explored to reduce its CO2emissions. Among these measures, the substitution of portland cement (PC) clinker with alternative materials is arguably the most effective, and consequently is an area of high research and commercial interest. However, few studies have systematically quantified environmental impacts of alternative, i.e., non-PC, clinkers. Here, we quantify and compare environmental impacts arising from the production of binders derived from several of the most commonly investigated alternative cement systems. We show that binders derived from most of these alternative cements result in lower greenhouse gas (GHG) emissions as well as other indicators of environmental impacts relative to the PC binder. The extent of these reductions varies as a function of energy requirements for production, process-related emissions from clinker formation, and raw materials demand. While utilization of alternative cements can be environmentally beneficial, similar reductions in GHG emissions can be achieved through use of partial replacement of PC with mineral admixtures. In this work, we quantitatively demonstrate the potential for alternative binders to mitigate environmental burdens and highlight the need to consider trade-offs among environmental impact categories when assessing these products.