폐주물사를 혼입한 콘크리트의 최적 배합설계를 위한 기초적 연구

Preliminary Study for Optimum Mix Design of Concrete Incorporation Waste Foundary Sand

The waste foundry sand might be recycled in concrete, resulting in energy saving and environmental protection. An half Factorial Exprements were performed with the variables of W/C ratio, S/A, Sand/Waste foundry sand ratio and Slump as a preliminary study for optimum mix design of concrete. The results show that the W/C ratio is the most important factor to the concrete strength. The substitute of waste foundry sand up to 30% has little influence, saying that it can substitute the fine aggregate without damaging the concrete properties.