What is it about?
The authors present a multi-scale and multi-chemo–physics platform to evaluate the lifecycle of structural concrete under environmental and mechanical impacts. Following the scheme from nanometer scale of cement hydrated with water molecule to meter scale of reinforced concrete (RC) members, the platform covers characteristic upscaling based on causality and behavioral response toward both environmental and mechanical impacts. During the process, multi-chemo–physics is incorporated to tackle the local equilibrium and global movement, where the associating impact is also considered with mesoscale cracks. With this platform, long-term structural performances are captured while the coupled durability issue is also investigated.
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Why is it important?
The multi-scale and multi-chemo–physics approach proposed by the authors could meet the following requirements for lifecycle evaluation of structural concrete under coupled environmental and mechanical impacts : 1. Coupled factors are synchronically assessed, such as steel corrosion, concrete frost damage, and sustained or cyclic loading; 2. Multi-chemo–physics is involved such as thermal, hygral, electrical, chemical, and mechanical fields; 3. Multi-scale methodology is realized which adopts the durability mechanisms at the microscale level to explain the material and structural performances at the macroscale.
Perspectives
As one of the co-authors, summarzing and writing this article was a good experience for me to review the development progress and corresponding knowledge of the multi-scale and multi-chemo-physical approach for lifecycle evaluation of structural concrete. In fact, more details (such as theories and modelings) are related to the approach, which is not introduced in this paper due to page limit. Therefore, I personally recommend the readers to refer to the previous papers as listed in the reference chapter if you are interested. Still, hope this paper could help the readers understand the concept and realization of multi-scale and multi-chemo-phyiscal analysis by the authors with case studies.
Zhao Wang
Tokyo Daigaku
Read the Original
This page is a summary of: Multi-scale and multi-chemo–physics lifecycle evaluation of structural concrete under environmental and mechanical impacts, Journal of Intelligent Construction, March 2023, Tsinghua University Press,
DOI: 10.26599/jic.2023.9180003.
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