Combined influence of expansive and shrinkage reducing admixtures on the shrinkage behavior of ultra-high performance concrete

Jung Jun Park, Doo Yeol Yoo, Sung Woo Kim, Young Soo Yoon

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

4 Scopus citations

Abstract

Since ultra-high performance cementitious composite (UHPCC) exhibits remarkable compressive strength and ductility, its application for structural member provides significant reduction of the section. The use of low water-to-binder ratio and admixtures with high fineness induce large shrinkage strain, leading to the possibility of large occurrence of shrinkage cracks due to the restraints of the form and reinforcing bars. Therefore, this study admixes a combination of expansive and shrinkage reducing agents as a solution to reduce the shrinkage of UHPCC. The eventual appropriateness is computed to evaluate the free shrinkage and restrained shrinkage behaviors. From the test results, the admixing of a combination of expansive and shrinkage reducing agents is seen to achieve a reduction of the free shrinkage by 30% to 50% at 28 days and a reduction of the strain of the external steel by about 19%.

Original languageEnglish
Title of host publicationAdvances in Fracture and Damage Mechanics X
PublisherTrans Tech Publications Ltd
Pages242-245
Number of pages4
ISBN (Print)9783037852187
DOIs
StatePublished - 2012 Jan 1
Event10th International Conference on Fracture and Damage Mechanics, FDM2011 - Dubrovnik, Croatia
Duration: 2011 Sep 192011 Sep 21

Publication series

NameKey Engineering Materials
Volume488-489
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Other

Other10th International Conference on Fracture and Damage Mechanics, FDM2011
CountryCroatia
CityDubrovnik
Period11/09/1911/09/21

Keywords

  • Expansive admixture
  • Restrained shrinkage
  • Shrinkage reducing agent
  • Ultra high performance concrete

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    Park, J. J., Yoo, D. Y., Kim, S. W., & Yoon, Y. S. (2012). Combined influence of expansive and shrinkage reducing admixtures on the shrinkage behavior of ultra-high performance concrete. In Advances in Fracture and Damage Mechanics X (pp. 242-245). (Key Engineering Materials; Vol. 488-489). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/KEM.488-489.242