This study investigated the compressive strength characteristics of concrete and mortar containing waste pottery fine powder. To identify the effects of waste pottery fine powder on the compressive strength of concrete and mortar, cement was replaced with waste pottery fine powder at 5, 10 and 15% rates and the variations in compressive strength were evaluated. For high strength concrete, compared with a control mix, 5% replacement resulted in the reduction of 3.4% in compressive strength at 7 days; however, at 28 days, the strength actually increased by 2.5%. For normal strength concrete, compared with a control mix, 5% replacement resulted in the reduction of 20.4% in compressive strength at 7 days, and 14% reduction at 28 days. As for the mortar, at 5% replacement, compared with a control mortar mix, compressive strength of mortar decreased by 3% at 7 days, while an increase of 5.9% was observed at 28 days. Therefore, the optimum replacement rate of cement with waste pottery fine powder appears to be 5%.

This paper describes the findings of the study conducted to evaluate compressive strength characteristics of high-strength concrete containing waste pottery fine powder. The experimental variables selected were 5, 10, and 15 percent replacements of cement with waste pottery fine powder. The findings are summarized as follows: (1) compared with the strength of the control specimens with no replacement rate, compressive strength of the concrete at 7days decreased by 4% at 5% replacement rate of cement with waste pottery fine powder, but (2) compressive strength of the concrete at 28days increased slightly by 1.3%..

Compressive strength characteristics of mortar containing waste pottery fine powder were investigated in this study. The experimental variables selected were 5, 10, and 15 percent replacements of cement with waste pottery fine powder. The findings are summarized as follows: (1) compared with the strength of the control specimens with no replacement rate, compressive strength of the mortar at 7days decreased by 3% and 9.3%, respectively at 5% and 10% replacement rate of cement with waste pottery fine powder, but (2) compressive strength of the mortar at 28days increased by 5.9% and 6.9%.