How to Make Hollow Blocks from Agricultural Wastes


  • 1 part of cement
  • 3 parts of: sawdust, soil, rice hull, wood shavings, wood chips, crushed coconut trunk


  1. Mix well, add enough water to desired consistency.
  2. Put in mold and place under the shade for a few hours.
  3. When dried, remove the blocks from mold to dry and incline to one side for ten (10) days. Sprinkle with water from time to time to prevent cracks.

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



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