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


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.


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


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