Liquefaction, which may be experienced during earthquakes, blasting, wave loading or sudden static loading, may cause saturated sandy ground to a very soft liquid-like material and many structures upon it sink or tilt, leading to no more use. Under such loading, generation of excess pore water pressure reduces the effective stresses and liquefaction occurs when the effective stresses approach to zero. It remains a critical earthquake-induced hazard for civil infrastructure. For this study, a series of two-way non symmetrical cyclic triaxial tests had been carried out to examine generation of excess pore water pressure of Sydney sand with fines up to 15%. It has been found, for compared test-pairs, that equivalent granular state parameter essentially captures the effects of fines in generation of excess pore water pressure. The effect of loading reversal on generation of excess pore water pressure is also examined and discussed Refereed/Peer-reviewed