알칼리 자극제와 고로슬래그의 비표면적이 고로슬래그 시멘트의 압축강도에 미치는 영향 = Effects of Alkaline Activator and Specific Surface Area of Blast Furnace Slag on the Compressive Strength of Blast Furnace Slag Cement

다국어 초록 (Multilingual Abstract)

The effects of specific surface area of blast furnace slag(BFS) and alkaline activator on the compressive strength of blast furnace slag cement were investigated. Sodium sulfate(Na2SO4) was used as alkaline activator. The addition amounts of alkaline activator, calculated in terms of Na2O, were 2.5 and 5.0wt.% to BFS weight, respectively. The flow and compressive strength of mortar were examined when the BFS power of which the specific surface area are 4,000, 6,000 and 8,000cm2/g were substituted for 30, 50, and 70wt.% of ordinary portland cement(OPC), respectively. As the results, the compressive strength of mortar increased with the increase of specific surface area of BFS and alkaline activator content when the mortar cured for 1 day and 3days. For the mortar cured for 7days, only the specific surface area of BFS affected the increase of compressive strength.

국문 초록 (Abstract)

고로슬래그의 비표면적 및 알칼리 자극제가 고로슬래그 시멘트의 압축강도에 미치는 영향을 조사하였다. 알칼리 자극제로는 Na2SO4를 사용하였으며 Na2O로 환산하여 고로슬래그의 2.5, 5.0wt.% 첨가하였다. 비표면적이 각각 4,000, 6,000, 8,000cm2/g인 고로슬래그 미분말을 보통 포틀랜드 시멘트에 대해 30, 50, 70wt.% 치환하였을 경우 모르타르의 유동성 및 압축강도를 측정하여 반응표면분석에 의한 통계적인 방법으로 분석하였다. 재령 1일과 3일의 초기강도는 고로슬래그의 비표면적이 크고, 알칼리 자극제의 첨가량이 높을수록, 재령 7일 이후의 경우 알칼리 자극제의 첨가량이 적을수록, 또한 고로슬래그의 비표면적이 클수록 압축강도가 증가하였다.

참고문헌 (Reference)

1 "현대실험계획법" 민영사 521-572, 2003

2 "알칼리 자극제에 의한 고로수쇄슬래그의 활성화 특성" 40 (40): 1005-1014, 2003

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