|
Title |
The Fundamental Properties of High Fluidity Mortar with Activated Ternary Blended Slag Cement
|
|
Authors |
배주룡(Ju-Ryong Bae) ; 김태완(Tae-Wan Kim) ; 김인태(In-Tae Kim) ; 김형석(Hyoung-Seok Kim) |
|
DOI |
https://doi.org/10.11112/jksmi.2017.21.6.074 |
|
Keywords |
고로슬래그 미분말(GGBFS) ; 플라이 애시(FA) ; 칼슘설포알루미네이트(CSA) ; 활성화된 삼성분계 시멘트(ATBC) Ground granulated blast furnace(GGBFS) ; Fly ash(FA) ; Calcium sulfoaluminate(CSA) ; Activated ternary blended cement(ATBC) |
|
Abstract |
This research presents the results of the strength and drying shrinkage properties to study the effect of ground granulated blast furnace slag(GGBFS), fly ash(FA) and calcium sulfoaluminate(CSA) for activated ternary blended slag cement. The activated ternary blended cement(ATBC) mortar were prepared having a constant water-cementitious materials ratios of 0.4. The GGBFS contents ratios of 100%, 80%, 70% and 60%, FA replacement ratios of 10%, 20%, 30% and 40%, CSA ratios of 0%, 10%, 20% and 30% were designed. The superplasticizer of polycarboxylate type were used. The activator was used of 10% sodium hydroxide(NaOH) + 10% sodium silicate(Na2SiO3) by weight of binder. Test were conducted for mini slump, setting time, V-funnel, water absorption, compressive strength and drying shrinkage. According to the experimental results, the contents of superplasticizer, V-funnel and compressive strength increases with an increase in CSA contents for all mixtures. Moreover, the setting time, water absorption ratios and drying shrinkage ratio decrease with and increase in CSA. One of the major reason for the increase of strength and decrease of drying shrinkage is the accelerated reactivity of GGBFS with alkali activator and CSA. The CSA contents is the main parameter to explain the strength development and decreased drying shrinkage in the ATBC.
|