TY - GEN
T1 - Evaluation of setting time in ultra high performance concrete
AU - Kim, Sung Wook
AU - Park, Jung Jun
AU - Yoo, Doo Youl
AU - Yoon, Young Soo
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2012
Y1 - 2012
N2 - Ultra high performance concrete (UHPC), characterized by a high strength and high ductility, is also subjected to large shrinkage due to its low water-to-binder ratio and its large content in high fineness materials. The large amount of autogenous shrinkage of UHPC can induce crack on structural member when it was restrained with reinforcement and form. However, shrinkage of UHPC in plastic state is not generating confining stress, which is the main cause of initial crack. Normally, the setting time in concrete is an index to distinguish shrinkage which occur confining stress or not. An estimation of setting time is conducted in compliance with ASTM C 403 till now however, that test standard reveals error of results due to discordance of test condition as following with concrete type. This study therefore evaluated setting time of UHPC through the modified test method which was proposed by KICT. Test results and analyses proved a discrepancy of setting time between ASTM and proposed method. The proposed method put faith in evaluation of setting time in accordance with UHPC.
AB - Ultra high performance concrete (UHPC), characterized by a high strength and high ductility, is also subjected to large shrinkage due to its low water-to-binder ratio and its large content in high fineness materials. The large amount of autogenous shrinkage of UHPC can induce crack on structural member when it was restrained with reinforcement and form. However, shrinkage of UHPC in plastic state is not generating confining stress, which is the main cause of initial crack. Normally, the setting time in concrete is an index to distinguish shrinkage which occur confining stress or not. An estimation of setting time is conducted in compliance with ASTM C 403 till now however, that test standard reveals error of results due to discordance of test condition as following with concrete type. This study therefore evaluated setting time of UHPC through the modified test method which was proposed by KICT. Test results and analyses proved a discrepancy of setting time between ASTM and proposed method. The proposed method put faith in evaluation of setting time in accordance with UHPC.
KW - Chemical shrinkage
KW - Setting time
KW - Ultra-high-performance concrete
UR - http://www.scopus.com/inward/record.url?scp=84870374777&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84870374777&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/KEM.525-526.621
DO - 10.4028/www.scientific.net/KEM.525-526.621
M3 - Conference contribution
AN - SCOPUS:84870374777
SN - 9783037854631
T3 - Key Engineering Materials
SP - 621
EP - 624
BT - Advances in Fracture and Damage Mechanics XI
PB - Trans Tech Publications Ltd
T2 - 11th International Conference on Fracture and Damage Mechanics, FDM 2012
Y2 - 18 September 2012 through 21 September 2012
ER -