"no fines" concrete. It is designed with high porosity and allows water to pass though so its called Porous concrete. in the other hand, Lightweight concrete is characterized by low density (1,400kg/m3 to 1,800 kg/m3) and is made of lightweight coarse aggregates. Finally, Lean concrete, which is also known as cement bound material, has low cementitious material content. It has low concrete strength and is commonly used as roadbase material..hope the above answer is helpful for you..regards