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Waste Disposal & Sustainable Energy
Waste Disposal & Sustainable Energy
    
碱活化自密实混凝土的性能和可持续性综述
Adeyemi Adesina1
1 Department of Civil and Environmental Engineering, University of Windsor, Windsor, Canada
Performance and sustainability overview of alkali-activated self-compacting concrete
Adeyemi Adesina1
1 Department of Civil and Environmental Engineering, University of Windsor, Windsor, Canada
 全文: PDF 
摘要： 自密实混凝土（SCC）由于其较高的可加工性而引起了广泛关注，与传统混凝土相比，自密实混凝土不需要振动，浇筑更容易。然而，硅酸盐水泥（PC）是SCC的主要粘合剂，其生产是能源密集型的，也是造成全球二氧化碳排放的主要原因之一。另一方面，在混凝土中使用碱活性胶凝材料（AABs）可使混凝土的能耗和碳排放降低50%以上。因此，在自密实混凝土中使用AAB作为粘合剂有助于获得更环保的混凝土。本文简要介绍了用AABs制作的SCC的性能，探讨了各种因素对碱活化自密实混凝土（AASCC）性能的影响，并对其进行了简化的可持续性评价。本文分析结果表明，只要选择合适的材料，就可以获得具有良好的新鲜和硬化性能的AASCC。此外，根据不同类型混凝土的内在能量和碳的评价，AASCC更具可持续性。然而，这一领域还需要更多的研究，以鼓励其被普遍接受和大规模应用。
关键词： Concrete;  Self-compacting concrete;  Alkali-activated concrete;  Sustainability;  Clean technology    
Abstract: Self-compacting concrete (SCC) has gained huge attention recently due to its high workability which eliminates the need for vibration and makes its placement easier compared to conventional concrete. However, the production of Portland cement (PC) which is the main binder in SCC is energy-intensive and one of the major contributors to the world’s carbon dioxide emission. On the other hand, the use of alkali-activated binders (AABs) in concrete has been reported to reduce the energy consumption and carbon emission of concrete by more than 50%. Therefore, the use of AAB as a binder in SCC can help to achieve an eco-friendlier concrete. This paper gives a short overview of the performance of SCC made with AABs. The effect of various factors on the performance of alkali-activated self-compacting concrete (AASCC) was discussed and a simplified sustainability assessment of AASCC was carried out. Discussions from this paper showed that AASCC with acceptable fresh and hardened properties can be achieved with the proper selection of materials. In addition, the evaluation of the embodied energy and carbon of different types of concrete showed that AASCC is more sustainable. However, more research in this field is required to encourage its universal acceptance and large-scale application.
Key words: Concrete    Self-compacting concrete    Alkali-activated concrete    Sustainability    Clean technology
收稿日期: 2020-04-23
通讯作者: Adeyemi Adesina     E-mail: adesina1@uwindsor.ca
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引用本文:

Adeyemi Adesina. Performance and sustainability overview of alkali-activated self-compacting concrete. Waste Disposal & Sustainable Energy, 10.1007/s42768-020-00045-w.

链接本文:

http://www.zjujournals.com/wdse/CN/10.1007/s42768-020-00045-w    或    http://www.zjujournals.com/wdse/CN/Y2020/V2/I3/165

[1] Joshua O. Ighalo, Adewale George Adeniyi. 水泥行业实现环境可持续性的展望[J]. Waste Disposal & Sustainable Energy, 2020, 2(3): 161-.