Interlocking Stabilized Soil Blocks Global Ecovillage ...
1) Take soil/sand/clay and mix it with the cement. Rule of thumb is a ratio of 1(cement)/6(soil). See the UNHABITAT link for simple techniques on establishing the exact ratio, which depends on your soil. 2)Mix properly/continuously as you keep on adding water until it is mixed. 3) Take a mixture and put it into the mould box (of your machine ...