A Study of Shrinkage Characteristics of Low Shrinkage Normal Strength Concrete With Boundary Restraint Condition

Title & Authors
A Study of Shrinkage Characteristics of Low Shrinkage Normal Strength Concrete With Boundary Restraint Condition
Jeong, Jun-Young; Min, Kyung-Hwan; Lee, Dong-Gyu; Choi, Hong-sik;

Abstract
In this study, the replacement effects of cementitious materials (fly ash, blast furnace slag, and blended mixtures) were assessed for normal strength concrete with very low shrinkage properties under $\small{350{\mu}{\varepsilon}}$ strain using a powder type shrinkage reducing agent. In addition, through mock-up tests of actual size walls restrained with four sides, the shrinkage characteristics using the power type shrinkage reducing agent were measured and the crack reducing ability was assessed. The slump and air contents were measured as the properties of fresh concrete, and the length changes of the prismatic specimens, $\small{100{\times}100{\times}400mm}$ in size, were measured for the shrinkage characteristics. To reduce the shrinkage of concrete, the maximum replacing ratio of the fly ash is effective to 20 percent; however, the use of blast furnace slag and ternary mixtures did not reduce the shrinkage.
Keywords
Blast furnace slag;Curing temperature;Fly-ash;Low shrinkage concrete;Ternary Mixtures;
Language
Korean
Cited by
References
1.
C. G. Han, S. W. Kim, K. T. Koh, M. H. Han, "Fundamental and Shrinkage Properties of Performance Concrete in Combined with Expensive Additive and Shrinkage Reducing Agent," Journal of the Korea Concrete Institute, Vol. 16, No. 5, pp. 605-612, 2004.

2.
C. G. Han, M. C. Han, S. H. Song, S. Yoon, "Drying Shrinkage of Concrete Combining Expensive Additives and Shrinkage Reducing Agent," Journal of the Korea Concrete Institute, Vol. 18, No. 3, pp. 394-404, 2006.

3.
J. J. Park, J. H. Moon, J. H. Park, S. W. Kim, J. W. Lee, "Influence of Expending Agents and Shrinkage Reducing Agents on the Shrinkage Properties of Ultra High Performance Concrete," KCI Proc. spring conference, pp. 883-884, 2014.

4.
C. J. Park, M. C. Han, "Mechanical Properties and Autogenous Shrinkage of Ultra High Performance Concrete Using Expansive Admixture and Shrinkage Reducing Agent Depending on Curing Conditions," Journal of the Korea Academia-Industrial cooperation Society, Vol. 16, No. 11, pp. 7910-7916, 2015. DOI: http://dx.doi.org/10.5762/KAIS.2015.16.11.7910

5.
Y. H. Kwon, B. H. Yoo, J. P. Park, D. G. Lee, H. S. Han, "A Study on Drying Shrinkage Properties of Concrete using Shrinkage Reducing Powder," KCI Proc. spring conference, pp. 225-226, 2014.

6.
J. P. Park, B. H. Yoo, H. S. Han, "Fundamental Properties of Concrete Corresponding to Contents Shrinkage Reducing Agent," KCI Proc. spring conference, pp. 225-226, 2015.