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Influence of Air Void Characteristic on Chloride Diffusion Coefficient and Compressive Strength of Concrete using Urea and Sulfur

요소와 유황을 첨가한 콘크리트의 압축강도와 염화물 확산계수에 대한 공극특성의 영향

  • Received : 2016.04.20
  • Accepted : 2016.07.07
  • Published : 2016.08.31

Abstract

This study presents the effect of urea and sulfur admixture on compressive strength, chloride diffusion coefficient, and internal void distribution of concrete. Compressive strength of concretes with urea admixture by 5% increased by 5% relative to Control. However, that of concretes with urea admixture over 10% decreased. Chloride diffusion coefficient of concrete with urea and sulfur admixture decreased by 40% relative to Control. Additionally, the volume of internal void of concrete with urea and sulfur admixture decreased by 20% relative to Control. Therefore, it can be mentioned from test results that the use of adequate urea and sulfur admixture improves the mechanical properties and durability of concrete.

Keywords

urea;sulfur;chloride diffusion coefficient;void characteristic;compressive strength

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Acknowledgement

Supported by : 중소기업청