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X-ray computer tomography studies of meso-defects evolution of UHPCC due to freezing-thawing action



Author(s): Chumping Gu, Wei Sun, Liping Guo, Qiannan Wang and Jinyu Zong
Paper category: conference
Book title: Microstructural-related Durability of Cementitious Composites
Editor(s): Guang Ye, K. van Breugel, Wei Sun and Changwen Miao
Print ISBN: 978-2-35158-129-2
e-ISBN: 978-2-35158-123-0
Publisher: RILEM Publications SARL
Publication year: 2012
Pages: 317 - 323
Total Pages: 7
Language: English


Abstract: X-ray computed tomography (X-ray CT), as a non-destructive test, was used to analyze the evolution of three dimensional (3D) meso-defects in ultra-high performance cementitious composite (UHPCC) due to freezing-thawing action. It can be found that the amount of mesodefects almost doubled in UHPCC after 800 freezing-thawing cycles. The smaller mesodefects increased more significantly than the bigger ones. The mass loss and relative dynamic modulus of elasticity versus numbers of freezing-thawing cycles were also tested. It is indicated that the freezing-thawing resistance of UHPCC with steel fibers is better than that of UHPCC without fibers.


Online publication: 2012-05-16
Publication Type: full_text
Public price (Euros): 0.00