2024-03-28T14:27:34Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00022895
2023-01-16T04:12:34Z
320:321:322
Impact of aggregate properties on the development of shrinkage-induced cracking in concrete under restraint conditions
Maruyama, Ippei
67367
Sasano, Hiroshi
67368
Lin, Mao
67369
Aggregate (D)
Interfacial transition zone (B)
Drying (A)
Microcracking (B)
Shrinkage (C)
Concrete specimens were prepared with the same mixture proportion except for their constituent coarse aggregates, namely, limestone and sandstone, that possess different inherent drying shrinkage values. The strain at a cross-section perpendicular to the drying direction under restricted and unrestrained conditions was observed using a digital image correlation method. It was confirmed that initiation and propagation of cracks were greatly affected by the types of aggregate. Analysis by the rigid-body spring network method, which explicitly incorporates aggregate shrinkage and properties of the interfacial transition zone (ITZ), revealed that aggregate shrinkage and fracture energy of the ITZ greatly influence fine-crack distribution and localization of cracks. It was elucidated that pure limestone with a small drying shrinkage value can reduce the number of visible cracks in concrete under restraint conditions since it allows fine cracks to form around coarse aggregate particles that absorb the localization of cracks, thus limiting wider cracks.
journal article
Elsevier
2016-07
application/pdf
application/pdf
Cement and Concrete Research
85
82
101
http://doi.org/10.1016/j.cemconres.2016.04.004
http://hdl.handle.net/2237/25074
0008-8846
https://nagoya.repo.nii.ac.jp/record/22895/files/Figures_Tables2.pdf
https://nagoya.repo.nii.ac.jp/record/22895/files/Manuscript_CCR_4.pdf
eng
https://doi.org/10.1016/j.cemconres.2016.04.004
© 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/