Process of cracking in reinforced concrete beams (simulation and experiment) by I. N. Shardakov, A. P. Shestakov, I.O. Glot, A.A. Bykov

“…The second stage is an active cracking, which is marked by a sharp change in eingenfrequencies. …”
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Evaluation of early-age shrinkage cracking behavior of partially continuous reinforced concrete pavement using restrained ring test by Shujie Han, Xiao Zhang, Kaixiang Liu, Jiacheng Zhang, Jiahang Hao

“…The concrete strain of ring specimens with active cracks is the smallest, indicating that active cracks can release the tensile stresses in the concrete due to limiting shrinkage. …”
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Impact of crack cocaine on salivary nucleic acids, enzymes, esters, and lipids: A fourier-transform infrared spectroscopy study by Gabriela Ribeiro Zucco, Taís Maria Cardoso de Oliveira, Thaís Xavier Pereira da Silva, Sandra Silva Marques, Fernando Sabbag, Marcelo Ribeiro de Araújo, Rodrigo Melim Zerbinati, Paulo Henrique Braz-Silva, José Ângelo Lindoso, Gabrielle Luana Jimenez Teodoro Nepomuceno, Letícia Foiani, Herculano da Silva Martinho, Janete Dias Almeida

“…The groups included active crack users with a minimum usage duration of 30 days, ex-crack users, and non-crack users. …”
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Active Control of Properties of Fresh and Hardening Concrete by 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

“…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. …”
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Enhancing piezoelectric control of cracks in thin solid aluminum plates using finite element data and a neural networks approach by Abdul Aabid, Muneer Baig, Mohammad Abdul Malik

“…As a result, this combined approach highlights the feasibility of active crack repair using piezoelectric actuators for improved structural integrity. …”
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Improvement of Calculation Technique for Flexible Orthotropic Plates on Elastic Base. Part 2. Calculation Results by O. V. Kozunova

“…The nonlinear calculation of the studied structure takes into account the change in its rigidity at the time of cracking and further active crack opening. The calculation of a flexible orthotropic plate on an elastic foundation in a nonlinear formulation is performed iteratively by the method of B. …”
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Innovative reinforcement techniques for 3D-printed concrete: The impact of shape memory alloys on flexural strength and crack mitigation by Ronak Motiani, Saha Keunang Sylvain, Sejal P. Dalal, Jay Vora, Rakesh Chaudhari

“…The recovery mechanisms were driven by SMA superelasticity (stress-induced strain recovery) and shape memory effect (heat-activated crack closure). Initially, the behavior of unreinforced 3DPC beams was assessed, followed by the addition of fiber reinforcement (FR), and finally, the integration of SMAs. …”
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