TY - JOUR
T1 - Bond behavior of reinforcing steel bars in thermal insulation concrete exposed to freeze-thaw cycles
AU - Tu, Jinsong
AU - Zhou, Ming
AU - Liu, Yuanzhen
AU - Chen, Y. Frank
N1 - Publisher Copyright:
© 2019 Jinsong Tu et al.
PY - 2019
Y1 - 2019
N2 - An experimental study on the bond behavior of reinforcing steel bars in thermal insulation concrete (TIC) mixed with glazed hollow beads (GHBs) and exposed to freeze-thaw (F-T) cycles was carried out. In order to investigate the effects of GHBs on freezing and thawing, the experimental results were compared with those of normal concrete (NC). The comparison shows that, after 300 F-T cycles, both bond behavior and mechanical properties of the TIC specimens are better than those of the NC specimens. Furthermore, in order to investigate the mechanism of frost effect on TIC, the CT scanning method was used to investigate the evolution of the inner structure of a TIC specimen exposed to F-T cycles. The CT images show that the deterioration of bond performance and mechanical properties of the TIC specimen appears to be caused by the increase of micropores in the TIC.
AB - An experimental study on the bond behavior of reinforcing steel bars in thermal insulation concrete (TIC) mixed with glazed hollow beads (GHBs) and exposed to freeze-thaw (F-T) cycles was carried out. In order to investigate the effects of GHBs on freezing and thawing, the experimental results were compared with those of normal concrete (NC). The comparison shows that, after 300 F-T cycles, both bond behavior and mechanical properties of the TIC specimens are better than those of the NC specimens. Furthermore, in order to investigate the mechanism of frost effect on TIC, the CT scanning method was used to investigate the evolution of the inner structure of a TIC specimen exposed to F-T cycles. The CT images show that the deterioration of bond performance and mechanical properties of the TIC specimen appears to be caused by the increase of micropores in the TIC.
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U2 - 10.1155/2019/7374964
DO - 10.1155/2019/7374964
M3 - Article
AN - SCOPUS:85063535302
SN - 1687-8434
VL - 2019
JO - Advances in Materials Science and Engineering
JF - Advances in Materials Science and Engineering
M1 - 7374964
ER -