JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Expansion Properties of Concrete under Various Unit Contents of Expansion Admixture and Curing Conditions
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Expansion Properties of Concrete under Various Unit Contents of Expansion Admixture and Curing Conditions
;;;;;
  PDF(new window)
 Abstract
Usually, the expansive additives is used to prevent the occurrence of drying shrinkage in concrete. However it may sometimes be over-added in field due to the insufficient cognition of constructor's, which may cause the serious problems in concrete structures. In this study the experiments are performed to present the expansion properties of concrete by varying the water to binder ratios, unit contents of expansive additives and curing conditions. By the results, the strength showed an increase with the addition of expansion additives from 30kg/㎥ up to 50kg/㎥, and a great decrease by contraries if the larger amount are added. Also the more the expansion additives were used, the more length change occurred in concrete. In view of the curing conditions, the concrete by air cured appeared a little expansion even the unit expansion additives increased, which showed an opposite inclination of that with standard curing. This could be explained by the less occurrence of hydration in air condition which also lead to the little expansion of concrete. Hence the expansion concrete to be cured in water or moisture condition became an especial important thing. concrete using expansive additives showed that high expansion was taken place with the rise of temperature.
 Keywords
CSA type expansion admixture;unit contents of expansion admixture;properties of expansion;
 Language
English
 Cited by
 References
1.
日本建?學會:膨脹材使を用するコンクり-トの調合設計·施工指針(案)·同解?, 1982.

2.
日本土木學會:膨脹コンクり-ト設計施工指針, 1993.

3.
대한건축학회논문집, 1998. vol.14. 1,

4.
한국콘크리트학회논문집, 1999.

5.
콘크리트학회 학술발표논문집, 1999. vol.11. 2,