폐제륜자 분말을 시멘트 첨가제 원료물질로 재활용 방안

I tried to find out how to recycle the discarded brake shoe of rolling stock. First, crush and grind the respective discarded brake shoes. And then, investigated the physical characteristic of major particles and made cement mortar by using the discarded brake shoes. That is, used this as a replacement material of sand. Finally, took a measure the compressed strength of cement mortar. As a measuring result, when the mixing percentage is up to the 70%, compressed strength was stronger than the mortar mixing cement and sand. Accordingly, this material was investigated, which is can be used as a substitute.