1. A portable computing equipment to optimize a visual inspection and survey of a structure, in particular in civil engineering, comprising: a mobile visual references database of pathologies at different stages of progress, and software means for: calculating, by interpolation of data coming from a predictive material and structural physical simulation results database, deterioration indicators and key ageing parameters, representing several possible visual aspects of a structural element of said structure at different moments in its life, using reference images coming from the visual references database, and categorizing the state of said structure by comparing the actual visual aspect of said structure with said reference images.