Evaluation of setting time in ultra high performance concrete

Sung Wook Kim, Jung Jun Park, Doo Youl Yoo, Young Soo Yoon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publicationAdvances in Fracture and Damage Mechanics XI
PublisherTrans Tech Publications Ltd
Pages621-624
Number of pages4
ISBN (Print)9783037854631
DOIs
Publication statusPublished - 2012
Event11th International Conference on Fracture and Damage Mechanics, FDM 2012 - Xian, China
Duration: 2012 Sep 182012 Sep 21

Publication series

NameKey Engineering Materials
Volume525-526
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Other

Other11th International Conference on Fracture and Damage Mechanics, FDM 2012
CountryChina
CityXian
Period12/9/1812/9/21

Keywords

  • Chemical shrinkage
  • Setting time
  • Ultra-high-performance concrete

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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