Industry and construction operators look for concrete that is sufficient strength and fluid to fill the most complex shapes. Moreover, that concrete must be stable enough to avoid aggregate segregation. The concrete formulation that proves to be the most suitable to achieve all those properties is the self-compacting concrete (SCC) one. Currently, to measure the rheological properties of the fresh concrete (plastic viscosity μp and yield stress τ0), the widely adopted test is the “concrete rheometer”. However, the use of a rheometer on site is a very complex operation, because it is too expensive, and in addition, it requires a qualified person to move, handle or repair it. Hence, many laboratories use other empirical tests to predict the rheological behavior of concrete. Each of these tests characterizes only one of the two rheological parameters (μp or τ0) and depends on the operator. In several cases, these constraints lead to a false characterization of the concrete behavior. To remedy these problems, this work aims to develop another means of rheological characterization of SCCs. This test will represent total independence from the operator and will quantify both the plastic viscosity and the yield stress of the self-compacting concrete. The proposed approach, verified both by experimental results and correlation studies, represents an economical and simple tool, that can be used efficiently on the building sites, and it makes it possible to characterize the SCC rheology from its flow.