Engineering Properties of Synthetic Lightweight Aggregate Concrete Affected by Alkali-Silica Reaction

알카리-실리카 반응(反應)에 의한 인공경량골재(人工輕量骨材)콘크리트의 공학적(工學的) 성질(性質)

This study was performed to obtain the basic data applied to use of synthetic lightweight aggregate concrete affected by alkali silica reaction. The results obtained were summarized as follows; 1. The compressive strength of type A concrete was increased with increase of curing age. At the curing age 28 days, the highest compressive strength was showed at type Band C concrete, respectively. But, it was gradually decreased with increase of curing age at those concrete. 2. The flexural strength of type A concrete was increased with increase of curing age. At the curing age 14 days, the highest flexural strength was showed at type Band C concrete, respectively. But, it was gradually decreased with increase of curing age at those concrete. 3. The correlation between compressive and flexural strength of the sample was shown highly significant only at type A concrete. 4. It was shown that the water absorptions of the type Band C were 7.0-7.8 times higher than the type A concrete. It was significantly higher at the early stage of immersed time at all sample. 5. The correlation between compressive strength and water absorption of the sample was significant only at the type A concrete.

이 논문(論文)은 알카리 실리카 반응(反應)에 의한 인공경량골재콘크리트의 공학적(工學的) 성질(性質)에 관한 연구로서, 연구에 의하여 얻어진 결과(結果)를 요약(要約)하면 다음과 같다. 1. Type A 콘크리트는 재령이 증가함에 따라 압축강도가 증가하였고, type B와 C 콘크리트는 재령 28일(日)에서 최대 압축강도를 보였으나, 재령이 증가함에 따라 감소하였다. 2. Type A 콘크리트는 재령이 증가함에 따라 휨강도도 증가하였으나, type B와 C 콘크리트는 재령 14일(日)에서 최대강도를 보였으며, 그 이후부터 재령이 증가함에 따라 감소하였다. 3. 압축강도와 휨강도와의 상관관계(相關關係)는 type A 콘크리트는 유의성(有意性)을 인정할 수 있었으나, type B와 C 콘크리트는 유의성(有意性)을 인정할 수 없었다. 4. Type A, B 및 C 콘크리트의 흡수율은 재령이 증가함에 따라 다같이 증가하였고, type A 콘크리트에 비(比)하여 type B와 C 콘크리트는 7.0-7.8배(倍)로 나타났으며, 흡수율은 모두 수침초기(水浸初期)에 높게 나타났다. 5. 압축강도와 흡수율과의 상관관계(相關關係)는 type A 콘크리트는 유의성(有意性)을 인정할 수 있었으나, type B와 C 콘크리트는 유의성(有意性)을 인정할 수 없었다.