The study was conducted on the effect of w/b on SCC concrete with palm oil fuel ash (POFA). Variations of W/B used in the compositions of SCC were 0.325, 0.350, and 0.375. Meanwhile, the POFA used is 10% of cement total. The results showed that the variation of w/b and the use of POFA affected the workability of the concrete, that could be seen from the test of fresh concrete in the form of slu…