W ith the development of concrete technology in the field of civil engineering, lately researchers began to pay attention to sandless concrete or commonly known as porous concrete. Porous concrete is a lightweight concrete because it uses little or nofine aggregateon the mixture, so the weight of porous concrete is usually lighter than ordinary concrete. There are several variations of porous concrete seeding materials namely coarse aggregate, cement, fly ash, and polyester resin. With the aim of knowing the mechanical strength of pore concrete added polymer materials such as polyester resin. This research was conducted using experimental methods in the laboratory including compresive strength, porosity, permeability and scanning electron microscope (SEM). The results of the research showed that varasi mixture with optimum strong press value obtained from the mixture of variation of Polyester Pore Concrete Resin 20% (BPPR20%) 24.98 MPa. As well as the results of optimum porosity value and optimum permeability coefficient obtained from the mixture of variations of Cement Pore Concrete (BPS) of 18.04% and 5.51 cm / s. From the results of scanning electron microscope (SEM) test, it can be seen that the variation of Pore Fly Ash Cement Polyester Resin mixture has cavities - concrete cavities that are tighter compared to the variation of cement pore concrete mixture (BPS).