Test bars (rods test) means casting rods square test between the plaster and sawdust, sawdust ratio: plaster of 0: 100 (Control) 15:85 30:70 and 45:55 Size 25x25x100 mm (length x width. x H) in order to determine the strength tests, bending tests of flexural strength (bending strength test) means a navigation bar test comes less bending resistance tester. And increasing pressure regularly, at a rate of not less than 200 newtons per minute but not more than 800 Newtons per minute. The test stick is broken unit is Newtons per square millimeter.
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