Discuss the effects of dropping the hammer in a NZ StandardCompaction Test from a height of LESS THAN 300 mm.
What effect does this have on the Optimum water content?
Plot a graph of energy versus hammer height from 250 mm to 400 mmin steps of 50 mm to illustrate your answer. Assume the mould,hammer mass, number of layers (3) and blows (27) are all constants.                                                                                          [10 marks]
