부순모래 콘크리트의 황산염해에 관한 연구

A Study on the Sulfate Attack of Concrete Using in Crushed Aggregates

As this study is to test effects of sulfate attack on deterioration of concrete using in crushed aggregates. Besides tests have been carried out with concrete by river sand and crushed sand by fine sand, concrete mixes various proportions of slica fume and fly ash(up to 15$\%$ by weight fo cement) were prepared and immersed in pure water, sodium sulfate solution for 28 and 60days. Test on the change in the weight and compressive strength of concrete according to the duration of immersion time and the content of slica fume and fly ash was performed.