A Study on the Air-Entrained Properties in mortar Using Fly-ash

플라이애쉬 혼합 모르터의 공기연행특성에 대한 연구

An entrained air is important in improving freeze/thaw resistance to the concrete structures. To achieve a proper degree of air entrainment, air entraining admixtures(AEA) are typically added to the concrete mixture, but it has been noted that an increase in the carbon content(LOI) of fly ash causes problems in proper air entrainment in concrete. In this study, the entrained air content of mortar with fly ash as an additive was considered according to the mix design as a type of AEA, adding amount of fly ash and AEA, and the elapsed time. Moreover, two different types of measurement were also tired for air content.