no fines concrete is one of the innovations of green concrete. No fines concrete is concrete without sand to produce pores concrete, the pores can drain water from the surface so it can be a water absorption area and reduce the drainage size on the road. This research is to know the value of flexural strength of no fines concrete with additional fly ash 20%, 40%, 60% and superplasticizer 0,5%. In this test using aggregate, cement and fly ash 5: 1: fly ash percentage. Aggregate from clereng with size 1 cm-2 cm, using portland pozzoland cement, variation of fly ash is 20%, 40% and 60% and using superplasticizer Sika Viscocrete 1003 type f 0,5%. This test used no fines concrete slab test object with length 60 cm, width 40 cm and thickness 10 cm. Testing flexural strength were performed at 28 days. The results show the largest flexural strength value in 40% fly ash variation with the average flexural strength is 1.55 Mpa and the lowest flexural strength in 60% fly ash variation with the average flexural strength is 0.75 Mpa. From the result of flexural strength it can be applied as a rigid pavement on pedestrian street, garden and greenhouse floor.