Active Control of Properties of Fresh and Hardening Concrete
DOI:
https://doi.org/10.21809/rilemtechlett.2023.200Keywords:
Active control, Fresh concrete, Hardening concrete, Rheology, Concrete propertiesAbstract
Concrete mixtures have an optimized mix design in view of attaining desired properties. However, after mixing, during further processing, it is typically not possible to further adjust the performance of the fresh and hardening concrete. A new and emerging approach is to actively control the concrete properties by means of responsive particles or polymers triggered by an externally applied signal. Active control of properties of concrete refers to the concept of on- demand changes of one or more properties of the concrete after mixing by triggering a response to one or more of the constituents using a specific trigger signal (e.g. thermal, chemical, electrical, magnetic...). The on-demand control of properties can focus on the processing stage (including e.g. pumping, casting, 3D printing), the curing and hardening stage (including e.g. control of capillary pressure, shrinkage, setting, and hardening) and even on the hardened stage during service life (e.g. active corrosion control, active crack healing...). Addressing specific obstacles in cementitious environments, ensuring responsive material stability, controlling signal applicability, cost, logistics, and on-site safety is crucial for successful implementation. A RILEM technical committee has been initiated in 2023, working on the concept of Active Control of Properties of Concrete (RILEM TC 317-ACP). The committee will focus on active control of properties of fresh and hardening concrete. This paper gives a short introduction to scope and activities of TC 317-ACP.
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Copyright (c) 2024 Geert De Schutter, Imene Abidi, Eleni Korda, Billy Boshoff, Kolawole Adisa Olonade, Didier Snoeck, Shravan Muthukrishnan, Yiyuan Zhang, Yaxin Tao, Swapnil Balasaheb Ghodke, Manu Kurungod Mohan, Mert Yücel Yardimci, Dengwu Jiao, Jay Sanjayan
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors retain copyright of the articles published in RILEM Technical Letters and grant the journal the right of first publication with open access. The work is simultaneously licensed under Creative Commons Attribution 4.0 International License (CC BY 4.0) that allows others to share and adapt the work under the following terms: 1) a proper attribution is given in a form of bibliographic record with the DOI link directing to RILEM Technical Letters; 2) a link to the license is provided; 3) the changes (if any) are indicated.