분쇄하지 않은 순환유동층 보일러 바텀애시를 혼입한 하이볼륨슬래그 시멘트

Abstract

Abstract

Use of circulation fluidized bed combustion (CFBC) bottom ash in high volume Slag cement without grinding

Jeon, Sang min Advisor : Prof. Kim hyeong ki, Ph,D Department of Architectural Engineering, Graduate School of Chosun University

In reinforced concrete structures, concrete is being studied in various ways to replace cement. Among them, high volume slag cement is a cement with a large amount of blast furnace slag, which has advantages of long-term strength increase and reduction of construction cost, but there is a limit of replacement rate due to the initial strength drop and increase of shrinkage rate. On the other hand, it has a characteristic of expanding when using CFBC bottom ash.

In this study, chemical and physical properties of concrete were measured by mixing CFBC bottom ash with high volume slag cement. And, by direct tensile test, we predicted the cracking time by comparing with the physical properties of concrete.