Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/105823
Title: Quantitative characterization of anisotropic properties of the interfacial transition zone (ITZ) between microfiber and cement paste
Authors: He, Shan
Yang, En-Hua
Li, Zhong
Keywords: DRNTU::Engineering::Civil engineering
Interfacial Transition Zone (B)
Microstructure (B)
Issue Date: 2019
Source: He, S., Li, Z.,& Yang, E.-H. (2019). Quantitative characterization of anisotropic properties of the interfacial transition zone (ITZ) between microfiber and cement paste. Cement and Concrete Research, 122136-146. doi:10.1016/j.cemconres.2019.05.007
Series/Report no.: Cement and Concrete Research
Abstract: A new approach to characterize ITZ between microfiber and cement matrix is reported. Results show that microstructure of hydrated cement paste is highly modified in the vicinity of microfibers, with higher porosity and less anhydrous cement. ITZ can extend up to 100 μm from the interface into the matrix. The larger extent of ITZ suggests that perturbation due to inclusion of microfibers to packing of cement grains is severer than that due to inclusion of aggregates. Furthermore, ITZ between microfiber and cement matrix is highly heterogeneous along its axial direction. Existing ITZ analysis methods performed on 2-D cross-sectional plane intersecting with fiber axis thus can lead to errors and uncertainties. Mechanical properties of ITZ between microfiber and cement matrix are anisotropic. Stiffness and ductility of ITZ in the radial direction are 31% and 28% higher than that in the tangential direction, respectively.
URI: https://hdl.handle.net/10356/105823
http://hdl.handle.net/10220/48759
ISSN: 0008-8846
DOI: 10.1016/j.cemconres.2019.05.007
Rights: © 2019 Elsevier. All rights reserved. This paper was published in Cement and Concrete Research and is made available with permission of Elsevier.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:CEE Journal Articles
MAE Journal Articles

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