TY - JOUR
T1 - A review on concrete creep characteristics and its evaluation on high-strength lightweight concrete
AU - Hong, Se Hee
AU - Choi, Jin Seok
AU - Yuan, Tian Feng
AU - Yoon, Young Soo
N1 - Funding Information:
This work is supported by the Korea Agency for Infrastructure Technology Advancement (KAIA) grant funded by the Ministry of Land, Infrastructure and Transport (Grant 22NANO-C156177-03).
Publisher Copyright:
© 2022 The Author(s).
PY - 2023/1
Y1 - 2023/1
N2 - This study conducted a comprehensive investigation into concrete creep. First, the creep mechanisms and parameters of high-strength lightweight concrete (HSLC) were introduced. Then, creep characteristics of high-strength concrete (HSC) and lightweight concrete (LWC) were analyzed and reviewed. It has been shown that HSC can improve creep resistance by making the cement matrix dense through incorporation of admixtures such as silica fume or changing the curing conditions. In addition, the porous characteristics of the lightweight material weakened the stiffness of the LWC and negatively affected the creep properties. It is unclear whether HSLC can be applied to the existing creep model because high-strength and lightweight characteristics show conflicts of creep properties. In this study, creep experiments were performed to evaluate the suitability with the creep models using three HSLC mixtures. Among them, the Comité Euro-International Du Béton and Fédération Internationale de la Précontrainte (CEB-FIP) creep model is not only applicable to HSC, but also has the oven-dried density as a parameter, so it was found to be the most suitable model for HSLC. Furthermore, HSLC showed a comparable creep coefficient with conventional normal-weight HSC, which has similar compressive strength despite securing lightness and showed excellent creep resistance. It is expected that HSLC may provide a new approach and solution in the construction industry and improve its feasibility.
AB - This study conducted a comprehensive investigation into concrete creep. First, the creep mechanisms and parameters of high-strength lightweight concrete (HSLC) were introduced. Then, creep characteristics of high-strength concrete (HSC) and lightweight concrete (LWC) were analyzed and reviewed. It has been shown that HSC can improve creep resistance by making the cement matrix dense through incorporation of admixtures such as silica fume or changing the curing conditions. In addition, the porous characteristics of the lightweight material weakened the stiffness of the LWC and negatively affected the creep properties. It is unclear whether HSLC can be applied to the existing creep model because high-strength and lightweight characteristics show conflicts of creep properties. In this study, creep experiments were performed to evaluate the suitability with the creep models using three HSLC mixtures. Among them, the Comité Euro-International Du Béton and Fédération Internationale de la Précontrainte (CEB-FIP) creep model is not only applicable to HSC, but also has the oven-dried density as a parameter, so it was found to be the most suitable model for HSLC. Furthermore, HSLC showed a comparable creep coefficient with conventional normal-weight HSC, which has similar compressive strength despite securing lightness and showed excellent creep resistance. It is expected that HSLC may provide a new approach and solution in the construction industry and improve its feasibility.
KW - Creep
KW - High-strength concrete
KW - High-strength lightweight concrete
KW - Hollow microspheres
KW - Lightweight aggregate
KW - Lightweight concrete
UR - http://www.scopus.com/inward/record.url?scp=85147736595&partnerID=8YFLogxK
U2 - 10.1016/j.jmrt.2022.11.125
DO - 10.1016/j.jmrt.2022.11.125
M3 - Review article
AN - SCOPUS:85147736595
SN - 2238-7854
VL - 22
SP - 230
EP - 251
JO - Journal of Materials Research and Technology
JF - Journal of Materials Research and Technology
ER -