본 연구에서는 빛 감성친화형 콘크리트에 광촉매를 적용하여 대기질 및 실내공기질을 개선하기 위한 LEFC 블록을 개발하고자 하였다. LEFC에 광촉매를 적용하게 되면 자외선 입사면 반대편에서도 투과로 인한 자외선이 존재하여 광촉매가 반응함으로써 일반 건축 자재를 적용한 경우보다 광촉매 반응효율이 크게 상승한다. 따라서 광촉매를 LEFC에 적용하기 위해 슬럼프, J-ring, L-box 테스트를 통한 자기충전성능을 평가하여 최적 배합을 결정하였고, 압축 및 휨 강도 시험을 통해 역학성능을 평가하였다. 그리고 TiO2 분포도를 확인하기 위해 SEM과 EDS 분석을 실시하였다. ALC골재와 단열재 적용으로 광촉매 사용량을 줄이고 단위중량을 감소시키는 방안을 활용하여 광촉매 효율을 증가시키는 빛투과 콘크리트 블록을 제작하였고, 향후 건조수축 등의 문제점 개선 및 NOx 제거 실험을 통한 LEFC 블록 성능 평가를 진행하고자 한다.

The effect of fine dust on indoor and outdoor atmospheric environment in Korea is getting larger and it is tried to solve this problem by incorporating photocatalyst. Conventional light transparent concrete (LEFC) arranges plastic rods to ensure light transmittance. However, it is difficult to secure sufficient fluidity due to the heterogeneity and spacing of the materials. In addition to the flow test, J-ring test and L-box test, which are ASTM standards or EN standards, are used to evaluate the fluidity and to find out the optimum mix design of light transparent concrete with self-consolidating performance.

Light Emotion Friendly Concrete (LEFC) transmits light through plastic rods inserted in concrete to stimulate emotion and give new image to space. There is a characteristic that can give a diverse and sensuous feeling depending on the change of the diameter and the interval of the plastic. For the application in the field, it is necessary to analyze the mechanical characteristics according to the case. In this study, we investigate the change of the mechanical properties of the light transmitting concrete reinforced with PVA fiber according to the change of the diameter (5mm, 10mm) and spacing (10mm, 15mm, 20mm) of the plastic rod.

This study was conducted examine the workability of LEFC in relation to unit quantity of water and fiber addition. The LEFC should secure low weight and good flow by mixing light weight aggregate because the fresh concrete should cured so that gaps do not form between the acrlyic wedges and the concrete with the fresh. The slump tests revealed that fresh concrete with 180 units of water and 0.1% fiber content and fresh concrete with 190 units of water and 0.1%, 0.2% fiber content respectively had excellent workability.

This study was conducted examine the mechanical properties of LEFC in relation to the type of light weight aggregate and replacement ratio. For the specimen, different replacement ratio was used for recycled waste ALC and the bottom ash light weight aggregate respectively. The tests revealed that 60% of the waste ALC light weight aggregate is suitable for securing the optimal strength and light weight of the LEFC.

This study was conducted examine the workability of LEFC in relation to unit quantity of water and fiber addition. The LEFC should secure low weight and good flow by mixing light weight aggregate because the fresh concrete should cured so that gaps do not form between the acrlyic wedges and the concrete with the fresh. The slump tests revealed that fresh concrete with 180 units of water and 0.1% fiber content and fresh concrete with 190 units of water and 0.1%, 0.2% fiber content respectively had excellent workability.

This study was conducted examine the mechanical properties of LEFC in relation to the type of light weight aggregate and replacement ratio. For the specimen, different replacement ratio was used for recycled waste ALC and the bottom ash light weight aggregate respectively. The tests revealed that 60% of the waste ALC light weight aggregate is suitable for securing the optimal strength and light weight of the LEFC.