| Title |
A Fundamental Study on the Properties of Water Purification in Cement Mortar Using TiO₂ Powder as Photocatalyst |
| Authors |
Heo Jae-Won ; Kim Hyo-Youl ; Lim Nam-Gi |
| Keywords |
TiO₂ ; Mortar ; Anatase ; Rutile ; Properties of Water Purification |
| Abstract |
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 TiO₂ as photocatalyst material.
(1) The result of flow test according to TiO₂ replacement rate has shown that both of anatase type and rutile type over 12% deviated from desired flow, 110±5mm. Consequently, the range below 9% will be suitable when the anatase type TiO₂ is used for functional additives if workability is considered.
(2) After compressive strength test, replacement rate 6-9% is estimated as suitable range if TiO₂ 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 TiO₂ 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 TiO₂ was normally better than rutile type on the same replacement rate. |