Application of micro-CT to Mori-Tanaka method for non-randomly oriented pores in air-entrained cement pastes
- Authors
- Park, Inhwan; Moon, Juhyuk; Bae, Sungchul; Oh, Jae Eun; Yoon, Seyoon
- Issue Date
- Sep-2020
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Mori-Tanaka; micro-CT; FEM; Homogenization; Pore; Cement paste; Air-entraining agent
- Citation
- CONSTRUCTION AND BUILDING MATERIALS, v.255, pp.1 - 12
- Indexed
- SCIE
SCOPUS
- Journal Title
- CONSTRUCTION AND BUILDING MATERIALS
- Volume
- 255
- Start Page
- 1
- End Page
- 12
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/145200
- DOI
- 10.1016/j.conbuildmat.2020.119342
- ISSN
- 0950-0618
- Abstract
- The homogenization technique has played a key role in elucidating the mechanical, thermal, and chemical behaviors of composite materials. Specifically, the cement-based material is a representatively complex composite material consisting of various inclusions, such as pores, fibers, and aggregates. Recent studies have mathematically introduced the Mori-Tanaka method to express non-randomly oriented ellipsoidal inclusions. Therefore, the present study aimed to practically apply pore information obtained from micro-computed tomography (micro-CT) to the Mori-Tanaka method. Cement-paste samples were prepared with 0, 1, 2, 5, and 10 wt% of an air-entraining (AE) agent. The representative ellipsoidal shape and orientation distribution function (ODF) of the pores were obtained from the micro-CT, and this information was incorporated into the Mori-Tanaka method. The computation results revealed good agreement between the results of the Mori-Tanaka method and the finite-element method (FEM). Additional sensitivity studies using the Mori-Tanaka model allowed for quantifying the anisotropic degree of the pores in the AE-agent added cement pastes.
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