TY - JOUR
T1 - Effectiveness of shrinkage-reducing admixture in reducing autogenous shrinkage stress of ultra-high-performance fiber-reinforced concrete
AU - Yoo, Doo Yeol
AU - Banthia, Nemkumar
AU - Yoon, Young Soo
N1 - Funding Information:
This research was supported by a grant ( 13SCIPA01 ) from Smart Civil Infrastructure Research Program funded by Ministry of Land, Infrastructure and Transport (MOLIT) of Korea government and Korea Agency for Infrastructure Technology Advancement (KAIA).
Publisher Copyright:
© 2015 Elsevier Ltd. All rights reserved.
PY - 2015/11/1
Y1 - 2015/11/1
N2 - This study describes the effect of shrinkage-reducing admixture (SRA) on free and restrained autogenous shrinkage behaviors of ultra-high-performance fiber-reinforced concrete (UHPFRC). To investigate the cracking potential, tensile strength development was experimentally obtained and predicted on the basis of the degree of hydration model. Three different SRA to cement weight ratios of 0, 1, and 2% and three different reinforcement ratios of 1.3, 2.9, and 8.0% were considered. A higher SRA content contributed to a slightly higher tensile strength and a lower autogenous shrinkage. In addition, a higher SRA content and a lower reinforcement ratio resulted in better restrained autogenous shrinkage behaviors, such as lower autogenous shrinkage stress and cracking potential. Therefore, it can be concluded that the use of SRA or a lower reinforcement ratio is favorable for improving the restrained shrinkage behaviors of UHPFRC.
AB - This study describes the effect of shrinkage-reducing admixture (SRA) on free and restrained autogenous shrinkage behaviors of ultra-high-performance fiber-reinforced concrete (UHPFRC). To investigate the cracking potential, tensile strength development was experimentally obtained and predicted on the basis of the degree of hydration model. Three different SRA to cement weight ratios of 0, 1, and 2% and three different reinforcement ratios of 1.3, 2.9, and 8.0% were considered. A higher SRA content contributed to a slightly higher tensile strength and a lower autogenous shrinkage. In addition, a higher SRA content and a lower reinforcement ratio resulted in better restrained autogenous shrinkage behaviors, such as lower autogenous shrinkage stress and cracking potential. Therefore, it can be concluded that the use of SRA or a lower reinforcement ratio is favorable for improving the restrained shrinkage behaviors of UHPFRC.
KW - Autogenous shrinkage
KW - Cracking potential
KW - Reinforcement ratio
KW - Shrinkage-reducing admixture
KW - Time-zero
KW - Ultra-high-performance fiber-reinforced concrete
UR - http://www.scopus.com/inward/record.url?scp=84944096842&partnerID=8YFLogxK
U2 - 10.1016/j.cemconcomp.2015.09.005
DO - 10.1016/j.cemconcomp.2015.09.005
M3 - Article
AN - SCOPUS:84944096842
VL - 64
SP - 27
EP - 36
JO - Cement and Concrete Composites
JF - Cement and Concrete Composites
SN - 0958-9465
ER -