辅助胶凝材料（SCMs）在超高性能混凝土（UHPC）中的作用：综述

The Role of Supplementary Cementitious Materials (SCMs) in Ultra High Performance Concrete (UHPC): A Review.

作者信息

Park Sungwoo, Wu Siyu, Liu Zhichao, Pyo Sukhoon

机构信息

Department of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea.

State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China.

出版信息

Materials (Basel). 2021 Mar 17;14(6):1472. doi: 10.3390/ma14061472.

DOI:10.3390/ma14061472

PMID:33802943

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8002722/

Abstract

Although ultra high-performance concrete (UHPC) has great performance in strength and durability, it has a disadvantage in the environmental aspect; it contains a large amount of cement that is responsible for a high amount of CO emissions from UHPC. Supplementary cementitious materials (SCMs), industrial by-products or naturally occurring materials can help relieve the environmental burden by reducing the amount of cement in UHPC. This paper reviews the effect of SCMs on the properties of UHPC in the aspects of material properties and environmental impacts. It was found that various kinds of SCMs have been used in UHPC in the literature and they can be classified as slag, fly ash, limestone powder, metakaolin, and others. The effects of each SCM are discussed mainly on the early age compressive strength, the late age compressive strength, the workability, and the shrinkage of UHPC. It can be concluded that various forms of SCMs were successfully applied to UHPC possessing the material requirement of UHPC such as compressive strength. Finally, the analysis on the environmental impact of the UHPC mix designs with the SCMs is provided using embodied CO generated during the material production.

摘要

尽管超高性能混凝土（UHPC）在强度和耐久性方面具有优异性能，但在环境方面存在劣势；它含有大量水泥，这导致UHPC产生大量二氧化碳排放。辅助胶凝材料（SCMs），即工业副产品或天然材料，可通过减少UHPC中的水泥用量来帮助减轻环境负担。本文从材料性能和环境影响方面综述了SCMs对UHPC性能的影响。研究发现，文献中已在UHPC中使用了各种SCMs，它们可分为矿渣、粉煤灰、石灰石粉、偏高岭土等。主要讨论了每种SCM对UHPC早期抗压强度、后期抗压强度、工作性和收缩率的影响。可以得出结论，各种形式的SCMs已成功应用于满足UHPC材料要求（如抗压强度）的UHPC中。最后，利用材料生产过程中产生的 embodied CO对含SCMs的UHPC配合比设计的环境影响进行了分析。