Mesomechanical model for concrete creep with viscoelastic interface transition zone

• Autorzy: Xu Zehua , Zhao Qingxin , Guo Weichao

Identyfikatory

DOI

10.1007/s43452-022-00384-x

• Języki publikacji: EN

Abstrakty

EN

The interface transition zone (ITZ) effect on concrete creep performance was analyzed in this study. The ITZ was treated as a weakened matrix, which mechanical behavior could be described by the Burgers model. The proposed prediction model of concrete creep took account of the ITZ's viscoelasticity by combining the generalized self-consistent Mori–Tanaka method with the Laplace transformation principle. The model's experimental validation confirmed that it accurately simulated the creep behavior of concrete specimens with various fly ash and ground slag ratios. The existence of viscoelastic ITZ promotes the creep of concrete, and the maximum creep growth rate was attained in the concrete specimen with 60% ratio of fly ash. The effects of ITZ thickness and other parameters, the volume fraction of aggregates, and particularly ITZ contribution to concrete creep in the concrete specimens with five mix proportions at different loading ages were clarified and discussed in detail.

Słowa kluczowe

EN

concrete; creep models; Mori-Tanaka method; interface transition zone; Laplace transformation

PL

beton; pełzanie; metoda Mori-Tanaki; strefa przejściowa; transformata Laplace'a

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2022
• Tom: Vol. 22, no. 2
• Strony: art. no. e65, 1--15
• Opis fizyczny: Bibliogr. 50 poz., il.

Twórcy

autor

Xu Zehua

• State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, China

autor

Zhao Qingxin

• State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, China

autor

Guo Weichao

• State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023)