• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2006년도 춘계학술논문 발표대회 제6권1호
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• pp.147-153
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• 2006

Photocatalyst reaction has limit of its usage because application range mostly centered on atmosphere purification area. Thus, it is true that an alternative plans are necessary to increase usage of $TiO_2$ as photocatalyst material. (1) The result of flow felt according to $TiO_2$ replacement rate has shown that both of anatase type and rutile type over 12% deviated from desired flow, $110{\pm}5mm$. Consequently, the range below 9% will be suitable when the anatase type $TiO_2$ if used for functional additives if workability is considered. (2) After compressive strength test, replacement rate 6-9% is estimated as suitable range if $TiO_2$ is used as compressive strength material. Rutile type and anatase type are suitable for in early-age strength and long-age strength respectively. (3) It was revealed that bending strength was dramatically decreased when replacement rate was increased. The main reason were the increase of $TiO_2$ doesn't influence hydration reaction and the decrease of bending strength. (4) The result from the water purification properties test using ion-chromatograhpy has shown that the condition with anatase type $TiO_2$ was normally better than rutile type on the same replacement rate.