This paper discusses easy way to determine Elasto-viscoplastic parameters for numerical simulation of fresh concrete flow. Slump tests and L-Flow tests are commonly performed at construction site in order to survey consistency of fresh concrete flow easily, so it is ideal to use results of these tests. Simplified analysis of slump test leads the fact that yield stress influences the slump value, and numerical simulations with varying parameters endorses the fact. Simulation shows that shear modulus also affects slump when slump is small. However viscosity does not affect slump value at all, but does only concrete velocity. So set of yield stress and shear modulus can be determined by the results of slump test and graph of yield stress evaluation of simulated slump value. And determination of the viscosity requires experiments measuring flow velocity test such as L-flow test.
