Abstract:
Urban flooding always occurs after heavy precipitation which is a serious issue in a big city that impacts on pedestrians. This study focuses on reusing waste products from the ceramic industries called pitcher in order to create pervious paving bricks. It is obvious that the brick using large grain aggregate provides lower strength with high porosity, leading to enhance the permeability rate. Ceramic pitcher from stoneware-grade tableware factory is crushed and sieved between 2-5 mm. Then, crushed pitcher is considered as the large aggregate mixed with white-opaque glaze slurry and hand-formed in a mold. It is found that there are four major factors that affect to strength, bulk density, apparent porosity, and permeability rate of pervious paving brick. Therefore, this research tries to find out the most suitable condition to produce the brick that has both strength and permeability. The optimal condition for this research is 80 wt% of large aggregate (size 2-5 mm) and 20 wt% of glaze slurry. In the term of glaze slurry, the best combination is 71.43 wt% of glaze powder and 28.57 wt% of water and firing at 1200 °C, respectively. The result show that the brick samples have a high compressive strength of 24.57 MPa, a permeability rate at 897.74 L/m2·min, a bulk density of 1.64 g/cm3, and apparent porosity of 30.43%.