Patent ID: 8171694

Claim:
A lightweight construction block formed in a mold from a mix of ingredients which include sand, water and a lightweight aggregate which is mixed according to a predetermined time regime; wherein the mix is capable of a wet slump during formation within the range of 0.5-20 mm, the slump resulting in a formation on said construction block which provides the block with at least one generally curved or irregular outer surface on at least one face of the block, wherein said mix of ingredients are blended in the following proportions; Sawdust: within the range 23 liters to 35 liters (2.3-2.9 parts) Sand: within the range 11 liters to 23 liters (1.7-2.3 parts) Cement: 10 Kg (1 part) Water: within the range 12 liters to 14 liters (1.2 parts) and wherein said sand includes fines, whose particulate size falls within the range of less than 150 microns.