- Rice hull
- Rice hull ash
- Oven or kiln with 3m x 5m measurement. (Open on top and made of red clay.)
- Shovel, hoe and tool for digging.
- Wood or metal mold with inside measurement of 2″ x 4″ x 10″ for red clay and 3″ x 8″ x 12″ for floor tiles.
- Wood or metal for scraping.
- Drying place (like table)
- Hole about 3mx2m with water.
- Mixing container — wood or concrete.
- Dig clay and bring to the hole with water.
- Soak for a day.
- Transfer mud clay in the mixing container and add rice hull ash: 1 part of ash to 3 parts of clay.
- Mix well by foot. Remove roots, leaves and other wastes.
- Prepare the molds (metal or wood). Wet inside surroundings and sprinkle with ashes.
- Pour the mud clay mixture.
- Scrape excess from mold.
- Remove from the mold carefully.
- Let it dry under the shade for a day.
- Let it dry under the sun for 5-7 days.
- Arrange the pile of brick tiles before firing.
- a. Place 30 cm thick rice hull ash under the oven. Arrange the pile of bricks at 5 cm apart from each other and 15cm from the side of the oven.
- b. Cover with rice hull ash, including the space between piles. Cover the first pile with 5cm thick of rice hull ash. Do the same in the second and next piles.
- c. This size of oven can accommodate 1,200 bricks.
- d. Ignite rice hull ash starting from the bottom. This will last up to one week. Leave bricks to cool.
B. Brick Tiles
- The method of making brick tiles is similar to bricks. They differ only in size and shape.
- Both sides of the floor must have a 1 inch groove.
- A laborer can make 200 bricks in a day.
- An open oven with 3m x 5m size can cook 1,200 bricks in a month.
For more information, contact:
Dept. of Science and Technology
Rm. 303 DOST Bldg., DOST Complex,
Gen. Santos Ave., Bicutan, Taguig City 1631
Telephone Nos: (632) 837-20-71 to 82