연구홍보포털

논문 초록 (Abstract)

BACKGROUND/OBJECTIVES: The importance of indoor air quality management has been greatly highlighted due to the recent increase in indoor life. Therefore, active white clay, known as porous adsorbent, was used as adsorbent to compare physical and adsorption properties and find appropriate mixing ratio. METHODS/STATISTICAL ANALYSIS: This study is an analysis of the properties of matrix according to activated clay replacement rates, with W/B at 45 (%) and activated clay replacement rates at 0, 5, 10, 15, 20 (%) and conjugates usually use Portland cement. The experimental items were flexural strength, compressive strength, liquidity, air content, CO2 concentration, fine dust concentration, and formaldehyde concentration. The concentration measurement was carried out with the small chamber method proposed by Hanbat University. FINDINGS: The purpose of this experiment is to analyze the properties of matrix and improve indoor air quality by using activated white clay as an adsorbent. The experimental results are as follows. Flexural strength and compressive strength tend to decrease as the replacement rate of activated clay increases. This is believed to decrease due to high voids in activated clay. As the replacement rate of activated clay increases, liquidity decreases and air content increases. This is believed to have reduced liquidity as activated clay absorbed the moisture needed to matrix during the mixing process. The increase in air content is believed to have increased due to the high pore rate of activated clay. In addition, CO2 concentration, fine dust concentration, and formaldehyde concentration are reduced. This is believed to be due to the physical adsorption performance and high air gap rate of activated clay. Therefore, it is expected that activated clay will greatly contribute to improving indoor air quality if it is used as a building material and adsorption of indoor air pollutants through precise experiments and verification in the future.