최근에는 노출콘크리트의 사용과 더불어 콘크리트의 질감이나 색상과 같은 디자인 요소를 다양화하기 위하여 컬러 콘크리트에 대한 관심이 증가하고 있다. 그러나 컬러 콘크리트의 제조 및 시공과정에서 소요 품질 및 색상을 확보하기 위한 재료선정, 배합계획 및 시공 관리상의 어려움이 존재하고 있는 실정이며, 외부 환경에서의 내구성능에 대한 평가가 검증되지 않아 특별한 경우가 아닌 일반 건축물에서는 컬러 콘크리트 타설을 피하려는 경향이 나타나고 있다.
따라서 본 연구에서는 건축내외장 재료로써의 컬러 콘크리트 사용성 및 안전성을 증대시키기 위하여 무기안료의 종류와 첨가량 변화에 따른 컬러 콘크리트를 제조하고, 굳지 않은 컬러 콘크리트의 슬럼프와 플로우 등의 작업성에 대한 평가를 실시한 후, 건조된 후의 안전성을 평가하기 위한 경화 컬러 콘크리트의 압축강도를 분석한다. 그리고 경화 컬러 콘크리트의 착색율 및 발색도 등을 평가하기 위해 색도 등의 기초적 특성을 평가하고자 한다.
본 논문의 연구결과는 다음과 같다. 적색, 청색, 녹색의 3가지 착색재가 전체적으로 치환율에 상관없이 원래의 착색재와 같은 색상의 명도가 높고, 채도가 낮아지는 경향을 나타내고 있어 건축내외장의 주조색으로 사용가능성이 높은 것으로 나타났다. 경화 컬러 콘크리트의 발색도는 색채에 따라 발색도의 치환율이 약간 달라지나 대체적으로 0.30%의 치환율에서 발색도가 양호하다는 것을 알 수 있었다.
Recently, with increasing the use of exposed concretes, there is a growing interest in color concrete to diversify the use of exposed concrete with design elements such as texture and color to vary design elements, such as texture and color of concrete. However, there is a tendency to avoid color concrete in a general architectural building due to difficulties in material selection, mixture planning, and construction management to secure required quality and color during production and construction of color concrete, and, moreover, due to lack of durability validation in an external environment. In this study, to increase the usability and soundness of the color concrete as an interior and exterior materials, color concrete were produced according the inorganic pigment and addition ratio, and the slump, flow and workability were evaluation in fresh concrete, and compressive strength was analyzed to evaluate safety of the dried concrete. And the basic color characteristics, such as chromaticity, was investigated to evaluate coloring ratio and color reproductionability of color concrete. The results are as follows. Red, blue and Green pigments gave high brightness and less chroma as original pigment, regardless of replacement ratio, then they are highly available to be used as dominant color of in-external of architectural building. Color reproductionability was good in 0.30% replacement ratio, even slight variation according to the colors.
Recently, with increasing the use of exposed concretes, there is a growing interest in color concrete to diversify the use of exposed concrete with design elements such as texture and color to vary design elements, such as texture and color of concrete. However, there is a tendency to avoid color concrete in a general architectural building due to difficulties in material selection, mixture planning, and construction management to secure required quality and color during production and construction of color concrete, and, moreover, due to lack of durability validation in an external environment. In this study, to increase the usability and soundness of the color concrete as an interior and exterior materials, color concrete were produced according the inorganic pigment and addition ratio, and the slump, flow and workability were evaluation in fresh concrete, and compressive strength was analyzed to evaluate safety of the dried concrete. And the basic color characteristics, such as chromaticity, was investigated to evaluate coloring ratio and color reproductionability of color concrete. The results are as follows. Red, blue and Green pigments gave high brightness and less chroma as original pigment, regardless of replacement ratio, then they are highly available to be used as dominant color of in-external of architectural building. Color reproductionability was good in 0.30% replacement ratio, even slight variation according to the colors.
