In the context of the energy consumption and the climate change issue, a particular interest has been focused on the use of biobased materials in the construction industry because of their low embodied energy and carbon sequestration. The main problem resides in the prediction of the mechanical behavior of biobased concretes because of the Physico-chemical interactions between the plant aggregates and the mineral binders, which can lead to modifications of the hydration mechanisms of this latter. The objective of this work is to determine macroscopic mechanical properties of the plant concrete as well as the local mechanical information by the aim of a digital image correlation (DIC) method. The purpose is then to determine kinematic charts of displacement and surface deformation of the plant concrete specimens and to quantify the moduli and Poisson’s coefficient of the plant concrete.